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                                         Errata


Title & Document Type: 4195A Spectrum Network/Analyzer Maintenance Manual


Manual Part Number: 04195-90100


Revision Date: November 1989



HP References in this Manual

This manual may contain references to HP or Hewlett-Packard. Please note that Hewlett-
Packard's former test and measurement, semiconductor products and chemical analysis
businesses are now part of Agilent Technologies. We have made no changes to this
manual copy. The HP XXXX referred to in this document is now the Agilent XXXX.
For example, model number HP8648A is now model number Agilent 8648A.

About this Manual

We've added this manual to the Agilent website in an effort to help you support your
product. This manual provides the best information we could find. It may be incomplete
or contain dated information, and the scan quality may not be ideal. If we find a better
copy in the future, we will add it to the Agilent website.


Support for Your Product

Agilent no longer sells or supports this product. You will find any other available
product information on the Agilent Test & Measurement website:
                                 www.tm.agilent.com

Search for the model number of this product, and the resulting product page will guide
you to any available information. Our service centers may be able to perform calibration
if no repair parts are needed, but no other support from Agilent is available.
                                                                                         MANUAL CHANGES
    HP 4195A                                                                                   MANUAL IDENTIFICATION
    Network/Spectrum Analyzer                                                          Model Number: HP 4195A
                                                                                       Date Printed: November 1989
                                                                                       Part Number:  04195-90100




           Thlm supplement conlainm Information for correetlng manual errom and for adaptlng the manual to newer Instruments that contaln Improvemenla
           or modlflcatlonm not documented In the exlstlng manual.

           To use thlm m lement
                        u
             1. ~ a k a11~ R A T cornctlonm
                      e           A
             2. Make all approprlate merlal-number-related changer llmted below




   SERIAL PREFIX OR NUMBER                 MAKE MANUAL CHANGES                         SERIAL PREFIX OR NUMBER                   MAKE MANUAL CHANGES

     ALL                                    1




  b New Item

     CHANGE 1

     b Section 2. PERFORMANCE TESTS, Page 2-22, Paragraph 2-14. LEVEL ACCURACY/FLATNESS TEST

    - Change Level Flatness Specification to 22.9 dB (from +IdB).
                                                            .5


     b Section 2. PERFORMANCE TESTS, Pages 6 and 7 of PERFORMANCE TEST RECORD

     Change the Flatness test limits to k2.9 dB (from k 1.5 dB).




                                                                                  NOTE
           Manual change m plamentm a n nvlmed a onen a necemury to kee manualm a cumnt and accurate a pommlble. Hewlett-Packardmeommendm
                            u                       m           m                         m                       m
           that you perlodlca$ nquemt the Iatemt d l t l o n of thlm mupplement. ? coplam a n available from all UP o f f l ~ m .When nquemtlng coplem, quote
                                                                                 m
           the manual Identlflcatlon Information from your mupplement, or the model number and prlnt dale from the title page of the manual.




DateIDiv: April 1990/33
Page: 1 of 1


PRINTED IN JAPAN
                                        HEWLETT
\I                                      PACKARO




                        MAINTENANCE MANUAL

                            MODEL 4195A
                    NETWORK/SPECTRUM
                               ANALYZER


                    (Including Option 00 1)

                                  SERIAL NUMBERS


         This manual applies directly to instruments whose serial number
         prefix is as follows.

                     2904A with ROM-based firmware revision 2.00
                     2904J with ROM-based firmware revision 2.00

          With changes described in APPENDIX A, this manual also applies to
          instruments whose serial number prefix is 2830J and below, or whose
          ROM-based firmware is revision 1.02 and below.

          For additional important information about serial numbers, read SERI-
          AL NUMBER in Section 7 of the Operation Manual.




                  @ COPYRIGHT: YOKOGAWA-HEWLETT-PACKARD, LTD., 1988
                   9-1. TAKAKURA-CHO,   HACHIOJI-SHI,   TOKYO.   JAPAN

Manual Part Number: 04195-90100
Microfiche Part Number: 04195-90150                                Printed: November 1989
March 1988   -   First Edition    Phis manual is the first edition Main-
                                  tenance Manual for the HP 4195A Net-
                                  worklspectrum Analyzer.

December 1988    Second Edition   Specification changes as of December
                                  1988.

November 1989    Third Edition    Adjustment procedure changes.
                                                            H P 4195A Maintenance Manual



                            HOW TO USE THIS MANUAL
This Maintenance Manual for HP Model 4195A Network/Spectrum Analyzer includes the
information necessary to maintain the HP 4195A1sperformance. This manual contains three
sections and appendices, as follows.


Section 1 General Information
         ,

    Section 1 includes the required equipment list, and information necessary for you to
    know before you perform the performance tests, and adjustments. This section should
    be read before performing tests and adjustments.


Section 2 Performance Tests
         ,

    Section 2 is the performance test instruction necessary to confirm that the HP 4195A
    satisfies the specifications given in Section 7 of the Operation Manual. This section
    should be referred to for periodical performance checks, and for verification test after
    repair.


Section 3, Adjustments

     Section 3 is the adjustment instruction necessary to adjust the HP 4195A so that it
     meets specifications. This section should be referred to when the 4195A fails the per-
     formance tests,.or after repair.


Appendices

     Appendix A is the Manual Backdating and provides information to use this manual with
     a 4195A which was manufactured before the printing date of the manual. Appendix B
     provides the board assembly list, and Appendix 6 provides the board assembly loca-
     tions to locate the board assembly.
CERTIFICATION
Hewlett-Packard Company certifies that this product met its published specifications at
the time of shipment from the factory. Hewlett-Packard further certifies that its calibra-
tion measurements are traceable to the United States National Bureau of Standards, to
the extent allowed by the Bureau's calibration facility, and to the calibration facilities of
other International Standards Organization members.

WARRANTY
This Hewlett-Packard instrument product is warranted against defects in material and
workmanship for a period if one year from the date of shipment, except that in the case
of certain components listed in Section 7 of Operation Manual, the warranty shall be for
the specified period. During the warranty period, Hewlett-Packard Company will, at its
option, either repair or replace products which prove to be defective.

For warranty service or repair, this product must be returned to a service facility desig-
nated by HP. Buyer shall prepay shipping charges to HP and HP shall pay shipping
charges to return the product to Buyer. However, Buyer shall pay all shipping charges,
duties, and taxes for products returned to HP from another country.

HP warrants that its software and firmware designated by HP for use with an instru-
ment will execute its programming instruction when property installed on that instru-
ment. HP does not warrant that the operation of the instrument, or software, or firm-
ware will be uninterrupted or error free.

LIMITATION OF WARRANTY
The foregoing warranty shall not apply to defects resulting from improper or inadequate
maintenance by Buyer, Buyer-supplied software or interfacing, unauthorized modifica-
tion or misuse, operation outside of the environment specifications for the product, or
improper site preparation or maintenance.

NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HP SPECIFICALLY DISCLAIMS
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICU-
LAR PURPOSE.

EXCLUSIVE REMEDIES
THE REMEDIES PROVIDED HEREIN ARE BUYER'S SOLE AND EXCLUSIVE
REMEDIES. HP SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL,
TRACT, TORT, OR ANY OTHER LEGAL THEORY.

ASSISTANCE
Product maintenance agreements and other customer assistance agreements are avail-
able for Hewlett-Packard products.

 For any assistance, contact your nearest Hewlett-Packard Sales and Service Office.
 Address are provided at the back of this manual.
                                                           H P 41954 Maintenance Maniral


                                SAFETY SUMMARY
The following general safety precautions must be observed during all phases of opera-
tion, service, and repair of this instrument. Failure to comply with these precautions or
with specific WARNINGS given elsewhere in this manual violates safety standards of
design, manufacture, and intended use of the instrument. The Hewlett-Packard Com-
pany assumes no liability for the customer's failure to comply with these requirements.

GROUND THE INSTRUMENT
To minimize shock hazards, the instrument chassis and cabinet must be connected to
an electrical ground. The instrument is equipped with a three-conductor AC power
cable. The power cable must be plugged into an approved three-contact electrical
outlet or used with a three-contact to two-contact adapter with the grounding wire
( green ) firmly connected to an electrical ground (safety ground) at the power outlet.
The power jack and the mating plug of the power cable meet International Electrotech-
nical Commission ( IEC ) safety standards.

DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE
Do not operate the instrument in the presence of flammable gasses or fumes. Opera-
tion of any electrical instrument in such an environment constitutes a safety hazard.

KEEP AWAY FROM LIVE CIRCUITS
Operating personnel must not remove instrument covers. Component replacement and
internal adjustments must be made by qualified maintenance personnel. Do not re-
place components with power cable connected. Under certain conditions, dangerous
voltages may exist even with the power cable removed. To avoid injuries, always dis-
connect power and discharge circuits before touching them.

DO NOT SERVICE O ADJUST ALONE
                      R
Do not attempt internal service or adjustment unless another person, capable of render-
ing first aid and resuscitation, is present.

USE CAUTION WHEN EXPOSING O HANDLING THE CRT
                                  R
Breakage of the cathode-ray tube ( CRT) causes a high velocity scattering of glass
fragments ( implosion ). To prevent CRT implosion, avoid rough handling or jarring of
the instrument. Handling of the CRT shall be done only by qualified maintenance
personnel using approved safety mask and gloves.

DO NOT SUBSTITUTE PARTS O MODIFY INSTRUMENT
                             R
Because of the danger of introducing additional hazards, do not substitute parts or
perform unauthorized modifications to the instrument. Return the instrument to a
Hewlett-Packard Sales and Service Office for service and repair to ensure the safety
features are maintained.

DANGEROUS PROCEDURE WARNINGS
WARNINGS, such as the example below, precede potentially dangerous procedures
throughout this manual. Instructions contained in the warnings must be followed.


                                     FzGiq
   DANGEROUS VOLTAGES, CAPABLE OF CAUSING DEATH, ARE PRESENT IN
   THlS INSTRUMENT. USE EXTREME CAUTION WHEN HANDLING, TESTING, AND
   ADJUSTING THlS INSTRUMENT.
H P 4195A Maintenance Manlral


                                  SAFETY SYMBOLS
         General Definitions of Safety Symbols Used On Equipment or In Manuals.



                      Instruction manual symbol: the product will be marked with this
                      symbol when it is necessary for the user to refer to the instruction
                      manual in order to protect against damage to the instrument.

                      Indicates dangerous voltage ( terminals fed from the interior by
                      voltage exceeding 1000 volts must be so marked ).

                       Protective conductor terminal. For protection against electrical
                       shock in case of a fault. Used with wiring terminals to indicate
       -
       A   OR   @      the terminal which must be connected to ground before operating
                       equipment.

                       Low-noise or noiseless, clean ground ( earth ) terminal. Used for
                       a signal common, as well as providing protection against electri-
                       cal shock in case of fault. A terminal marked with this symbol
                       must be connected to ground in the manner described in the
                       installation (Operating ) manual, and before operating the
                       equipment.

                       Frame or chassis terminal. A connection to the frame ( chassis )
      r)7 oa A         of the equipment which normally includes all exposed metal
                       structures.


          P.4          Alternating current ( power line ).

         -
         ---           Direct current ( power line ).

          -
          m            Alternating or direct current ( power line ).

                       A WARNING denotes a hazard. It calls'attention to a procedure,
                       practice, condition or the like, which, if not correctly performed or
                       adhered to, could result in injury or death to personnel.

                       A CAUTION sign denotes a hazard. It calls attention to a pro-
                       cedure, practice, condition or the like, which, if not correctly
                       performed or adhered to, could result damage to or destruction of
                       part or all of the product.

         NOTE          A NOTE denotes important information. It calls attention to a
                       procedure, practice, condition or the like, which is essential to
                       highlight.
                            TABLE OF CONTENTS

SECTION 1 GENERAL INFORMATION
 1-1.     INTRODUCTION

 1-2.     REQUIRED EQUIPMENT

 1-3.     PREPARATION FOR PERFORMANCE TESTIADJUSTMENT

   13-1.        SET THE LINE VOLTAGE SELECTION SWITCH
   13-2.        WARMINGI UP THE HP 4195A
   13-3.        EXPRESSION FOR THE KEYS AND SOFTKEYS IN THIS MANUAL
   1-3-4.       INITIALIZING THE 4195A
   1-3-5.       HOW TO SET UP THE 4195A
   13-6.        USER PROGRAM ( AUTO SEQUENCE PROGRAM )
   1-3-7.       HOW TO READ 4195A MEASUREMENT DATA

 1-4.     INTERCONNECTION CABLES


SECTION 2       PERFORMANCE TESTS
 2-1.     INTRODUCTION

 2-2.     PERFORMANCE TEST RECORD

          CALCULATION SHEET

          CALIBRATION CYCLE

          INTERNALSYNTHESIZERFREQUENCYACCURACYTEST

          RESOLUTION BAND WIDTH ACCURACY TEST

          AMPLITUDE MEASUREMENT ACCURACY TEST

          AMPLITUDE MEASUREMENT LINEARITY TEST

          AMPLITUDE MEASUREMENT FREQUENCY RESPONSE TEST

          SECOND HARMONIC DISTORTION TEST

          THIRD ORDER INTERMODULATION DISTORTION TEST

          RESIDUAL RESPONSE TEST

  2-14.     LEVEL ACCURACY/FLATNESS TEST




                                                                      vii
Table of Conrrnrs



  2-1 5.   NON-SWEEP LINEARITY TEST

  2-16.    POWER SWEEP LINEARITY TEST

  2-1 7.   SECOND HARMONICS TEST

  2-1 8.   NON-HARMONIC SPURIOUS TEST

  2-19.    PHASE NOISE TEST

  2-20.    CROSSTALK TEST

  2-21.    MAGNITUDE RATIO/PHASE DYNAMIC ACCURACY TEST

  2-22.    MAGNITUDE RATIO/PHASE FREQUENCY RESPONSE TEST

  2-23.    DC SOURCE VOLTAGE ACCURACY TEST

  CALCULATION SHEET
   PERFORMANCE TEST RECORD

SECTION 3 ADJUSTMENTS
   3-1.    INTRODUCTION

   3-2.    SAFETY CONSIDERATIONS

   3-3.    ADJUSTABLE AND FACTORY SELECTED COMPONENTS

   3-4.    ADJUSTMENT INTERACTIONS

   3-5.    ADJUSTMENT LOCATIONS

   3-6.    PREPARATION FOR ADJUSTMENT

      3-6-1.        CONSTRUCTION OF ADJUSTMENT INSTRUCTION
      3-6-2.        SERVICE FUNCTION
      3-6-3.        EXTERNAL REFERENCE

   3-7.    SPECIAL DEVICE FOR ADJUSTMENT

   3-8.    SWITCHING POWER SUPPLY ADJUSTMENTS

      3-8-1.        SWITCHING FREQUENCY ADJUSTMENT
      3-8-2.        OUTPUT VOLTAGE ADJUSTMENT

   3-9.    HlGH STABILITY OSCILLATOR ADJUSTMENTS ( OPT. 001 ONLY )

      3-9-1.        SUPPLY VOLTAGE ADJUSTMENT
      3-9-2.        HIGH STABILITY OSCILLATOR FREQUENCY ADJUSTMENT
                                                             Table of Contenls



3-10.    CRT DISPLAY ADJUSTMENTS

              CRT DISPLAY SECTION REMOVAL
              LOCAL VOLTAGE REGULATOR ADJUSTMENT
              VERTICAL HOLD ADJUSTMENT
              DISPLAY ADJUSTMENT
              HORIZONTAL POSITION COARSE ADJUSTMENT
              CRT CUTOFF ADJUSTMENT
              WHITE BALANCE ADJUSTMENT
              MAXIMUM INTENSITY ADJUSTMENT
              FOCUS, CONVERQENCE, AND INTENSITY ADJUSTMENT

3-1 1.   FREQUENCY GENERATOR ADJUSTMENTS

  3-1 1-1.    80MHz REFERENCE SOURCE LEVEL ADJUSTMENT                    3-32

   3-1 1-2.   80MHz REFERENCE SOURCE FREQUENCY ADJUSTMENT                3-33

3-12.    VCO OUTPUT SPURIOUS REJECTION ADJUSTMENTS                       3-36

   3-12-1.    100kHz SPURIOUS REJECTION ADJUSTMENT
   3-12-2.    API ADJUSTMENTS
   3-12-3.    16OMHZ SPURIOUS REJECTION ADJUSTMENT

3-13.    REFERENCE FREQUENCY CONVERTER ADJUSTMENTS                       3-46

   3-13-1.    80 MHz REFERENCE SIGNAL LEVEL ADJUSTMENT
   3-13-2.    160 MHz BAND PASS FILTER AND REFERENCE SIGNAL LEVEL
              ADJUSTMENTS

3-14.    AC OVERLOAD DETECTOR ADJUSTMENTS

   3-14-1.    LF AC OVERLOAD DETECTOR ADJUSTMENTS
   3-14-2.    HF AC OVERLOAD DETECTOR ADJUSTMENTS

3-1 5.   RECEIVER INPUT FILTER ADJUSTMENTS

   3-15-1.           -
              150 MHz 225 MHz VOLTAGE TUNED BPF ADJUSTMENT
   3-15-2.           -
              225 MHz 340 MHz VOLTAGE TUNED BPF ADJUSTMENT
   3-15-3.           -
              340 MHz 500 MHz VOLTAGE TUNED BPF ADJUSTMENT

3-16.    RECEIVER FIRST IF CONVERTER ADJUSTMENTS

   3-16-1.    FIRST IF CONVERTER 86.6 MHz BPF ADJUSTMENT
   3-16-2.    FIRST IF CONVERTER 246 MHz BPF ADJUSTMENT
   3-16-3.    FIRST IF CONVERTER 86.6 MHz LEVEL ADJUSTMENT
   3-16-4.    FIRST IF CONVERTER 246 MHz LEVEL ADJUSTMENT
   3-16-5.    FIRST IF CONVERTER LOCAL LEAK ADJUSTMENT
Table of Contents



  3-17.    RECEIVER SECOND IF CONVERTER ADJUSTMENTS                      3-73
                                                                                ,   .
     3-1 7-1.    SECOND IF CONVERTER 246 MHz BPF ADJUSTMENT
     3-17-2.     SECOND IF CONVERTER 86.6 MHz BPF ADJUSTMENT
     3-17-3.     SECOND IF CONVERTER LEVEL ADJUSTMENT

  3-1 8.   RECEIVER THlRD IF CONVERTER ADJUSTMENTS

     3-18-1.     THlRD IF CONVERTER 86-6 MHz BPF ADJUSTMENT
     3-18-2.     THIRD IF CONVERTER 6.316.9 MHz BPF ADJUSTMENTS
     3-18-3.     20 dB AMPLIFIER GAlNlPHASE ADJUSTMENT
     3-18-4.     THlRD IF CONVERTER 6.6 MHz LEVEL ADJUSTMENT
     3-18-5.     10 d B AMPLIFIER GAlN ADJUSTMENT

  3-19.    SOURCE SECOND/THIRD IF CONVERTER ADJUSTMENTS

     3-19-1.     SECOND IF CONVERTER FlRST 86.6 MHZ BPF ADJUSTMENT
     3-19-2.     SECOND IF CONVERTER SECOND 86.6 MHZ BPF ADJUSTMENT
     3-19-3.     THlRD IF CONVERTER 346 MHZ BPF ADJUSTMENT
     3-19-4.     THlRD IF CONVERTER 86.6 MHZ BPF ADJUSTMENT
     3-1 9-5.    SECONDITHIRD IF CONVERTER GAlN ADJUSTMENT

   3-20.   SOURCE FlRST IF CONVERTER ADJUSTMENTS

     3-20-1.        FlRST IF CONVERTER BAND PASS FILTER ADJUSTMENT
     3-20-2.        FlRST IF CONVERTER GAlN ADJUSTMENT

   3-21.   .SOURCE OUTPUT FILTER ADJUSTMENTS

     3-21-1.               -
                    150 MHz 225 MHz VOLTAGE TUNED BPF ADJUSTMENT
     3-21-2.               -
                    225 MHz 340 MHz VOLTAGE TUNED BPF ADJUSTMENT
     2-21-3.               -
                    340 MHz 500 MHz VOLTAGE TUNED BPF ADJUSTMENT

   3-22.   SOURCE POWER AMPLIFIER ADJUSTMENTS

     3-22-1.        POWER AMPLIFIER DC OFFSET ADJUSTMENTS
     3-22-2.        POWER AMPLIFIER GAlN ADJUSTMENTS

   3-23.   SOURCE DC BIAS VOLTAGE ADJUSTMENTS

   3-24.   PHASE DETECTOR TRACKING ADJUSTMENTS

   3-25.   CALIBRATION DATA UPDATING

                 HP-IB CONTROLLER PREPARATION
                 RECEIVER BPF TUNING VOLTAGE CALIBRATION DATA UPDATING
                 FlRST IF CONVERTER OUTPUT LEVEL FINE ADJUSTMENT
                RECEIVER FREQUENCY RESPONSE CALIBRATION DATA UPDATING
                 SOURCE BPF TUNING VOLTAGE CALIBRATION DATA UPDATING
                 SIGNAL SOURCE GAlN ADJUSTMENT
                 SIGNAL SOURCE AMPLITUDE CALIBRATION DATA UPDATING
                 SIGNAL SOURCE LINEARITY CALIBRATION DATA UPDATING
                 SIGNAL SOURCE FLATNESS CALIBRATION DATA UPDATING
                 EXITING THE ADJUSTMENT PROGRAM
                                      Table of Contents



APPECDIX A MANUAL BACKDATING
APPENDIX B BOARD ASSEMBLY LIST
APPENDIX C BOARD ASSEMBLY LOCATIONS
                                                              GENERAL INFORMATION




                                     SECTION 1

                         GENERAL INFORMATION

1-1. INTRODUCTION

This manual provides the information to maintain the HP 4195A; the Performance Test, and
Adjustment procedures. The performance test should be performed during the periodical
perf6rmance check, or when confirming the HP 4195A meets specified performance require-
ments after being repaired or adjusted. The HP 4195A adjustments should be performed
when the HP 4195A fails the performance test, or after being repaired. This section provides
a list of the equipment required to do the performance test and adjustment, and the informa-
tion you must know before performing any tests and adjustments.


1-2. REQUIRED EQUIPMENT
Table 1-1 lists the equipment required to do the performance tests and adjustments. Use
only calibrated test instruments when performance testing the HP 4195A. If the recommen-
ded test equipment is not available, equipment with specifications that equal or surpass
those of the recommended equipment may be used.


                                           NOTE

     Components used as standards must be (1) calibrated using an instrument whose
     specifications are traceable to the National Bureau of Standards (NBS) or to an
     equivalent standards group, or (2) calibrated directly by an authorized calibration
     organization such as NBS. The calibration cycle depends on the stability specifi-
     cations of each component.
                                                             G E I V G R AI, I/VFORA/lAT I O X


                      Table 1-1. Required Equipment (sheet 1 of 3)

Equipment        Critical Specifications           Recommended
                                                                              ~ t y use1
                                                      Model

Series 200   No Substitute                        HP 9826 or HP 9836             1         A
Controller

Spectrum     Frequency Range: 1M to 1GHz          HP 85688                       1     P A
Analyzer     Amplitude Accuracy: 1 + 1dB

Power        No Substitute                        HP 436A Opt. 022               1     P A
Meter                                             or HP 438A

Power        Freq. Range: 100k to 500MHz          HP 8482A                       1     P A
Sensor       Power Range: 1u to 10mW
             Impedance: 50Q

Digital      DCV and ACV measurement              HP 3456A                       1     P A
Voltmeter    Freq. Range: > 100kHz
             ACV dBm reading

Signal       No Substitute                        HP 86568, HP 8482A             2     P
Generator                                         or HP 84828                    1         A

Frequency    Maximum Frequency: > 500MHz          HP 5385A Opt. 004               1    P A
Counter      Accuracy: < 0.25 ppm

Network      Freq. Range: 10M to 500MHz           HP 8753A                        1        A
Analyzer     Dynamic Accuracy: 10.05dB
             Scale Resolution: 0.1 dB/Div.

Oscillo-     Vertical: 1OmV/Div.                  HP 54111D                       1        A
scope        Horizontal: 5ms/Div.

Power        Freq. Range: >500MHz                 HP 11667A                      1     P
Splitter     Two outputs                                                         2         A

Coaxial      Atten.: 0 to 80dB, 10dB step         HP 8496A or HP 8496G            1    P A
Step         VSWR: < 1.02                         w/Opt. 001 & Opt. H60
Attenuator   Calibration Uncertainty:
                 < k0.006 dB (10 to 40dB)
                 < k0.015 dB (50 to 80dB)
                    (Calibrated at 50 MHz)

Coaxial      Termination, 50Q, N(m)               HP 909C Opt. 012                1    P A
Loads
             Feedthrough, 50Q                     PN 04192-61002                  1    P
                BNC(m)-BNC(f)                     or HP 11048C

Filter       Lowpass, Cutoff Freq.: 50MHz         PN 0955-0306                    1    P
                BNC(m)-BNC(f)
--                                            -
                      Table 1-1. Required Equipment (sheet 2 of 3)
                                                                                       1
Equipment        Critical Specifications           Recommended                   Use
                                                                           Qty
                                                      Model

Signal       (Used to sum two RF signal)         PN 41 952-65001             1   P
Combiner                                         (included in HP 41952A)

Double       Freq. Range: 500MHz                 HP 10514A                   1       A
Balanced
Mixer

Attenuator   Impedance 50 R, N(m)-N(f)
Pad             Att 3dB                          HP 8491A Opt. 003           3       A
                Att 6dB                          HP 8491A Opt. 006           1   P
                Att 1OdB                         HP 8491A Opt. 010           1   P
                Att 6dB, VSWR < 1.015            HP 8491A                    1   P
                                                 w/Opt. 006 & Opt. H60
                Att 10dB, VSWR < 1.01 5          HP 8491A                    1   P
                                                 w/Opt. 010 & Opt. H60

Probes       10:1, 1MR, Max. Input: >200V        HP 10040A                   1       A

             Impedance: > 500 R at 250MHz        HP 10020A                   1       A

Cables       HP-IB                               HP 10833A/B/C               3       A

             Coaxial, 50R
                N(m)-N(m), 61cm                  HP 115008                   3   P A
                BNC(m)-BNC(m), 30cm              PN 8120-1838                2     A
                BNC(m)-BNC(m), 61c m             PN 8120-1839                1   P
                                                                             3     A
                 BNC(m)-BNC(m), 122cm            PN 8120-1840                2   P A
                                                 or HP 10503A

Test         Alligator Clips to                   HP 11002A                  1       A
Leads             Dual Banana Plug

Adapters     Coaxial, 50R
                N(f)-N(f)                         PN 1250-0777               1   P
                N(f)-BNC(f)                       PN 1250-1474               1   P A
                N(m)-N(m)                         PN 1250-0778               1   P
                                                                             2     A
                 N(m)-BNC(f)                      PN 1250-0780               1   P
                                                                             3     A
                 N(f)-B NC(m)                     PN 1250-0077               1   P
                                                                             3     A
                 BNC(m)-BNC(f), Right Angle       PN 1250-0076               1     A

                 BNC(f)-SMB(f)                    PN 1250-1236               4       A
                 BNC(f)-SMC(f)                    PN 1250-0832               1       A
                 SMB(m)-SMB(m)                    PN 1250-0669               1       A

             BNC(f)-Dual Banana Plug              PN 1251-2277               1   P A
                             Table 1-1. Required Equipment (sheet 3 of 3)
                                                                                                  I
Equipment               Critical Specifications            Recommended                      Use
                                                                                     Qty
                                                              Model

Service           HP 4195A Adjustment Program            PN 04195-65009                1       A
Tool              Extender Board                         PN 04195-66590                1       A
                  Template, CRT Alignment                PN 04195-69051                1       A
                  Interconnection Cable, Spin            PN 16349-61601                1       A
                  Interconnection Cable, 50pin           PN 16349-61602                1       A
                  Interconnection Cable, BNC(m)          PN 16349-61603                3       A
                  CRT Section Extension Cable            PN 16349-61604                1       A

Resistor          46412, BNC(f)-BNC(f)                    Refer to para. 3-7            1      A



          Note:   '   P and A indicate Performance Test and Adjustment, respectively.

                      An HP 8496A/G step attenuator with required low VSWR (c 1.02) can be
                      purchased by specifying option H60, then contact your nearest Hewlett-
                      Packard service center for the required calibration frequency and calibration
                      uncertainty.

                      If your attenuator is an HP 84966 (remote control), also provide the seg-
                      ment actuation sequence for every attenuation as listed below.

                                     Attenuation           Activated Segment

                                                                     4
                                                                 1 and 4
                                                                 2 and 4
                                                                1,2, and 4

                  ' An HP 8491A option 006 or option 010 fixed attenuator with required low
                      VSWR (c 1.015) can be purchased by specifying option H60.
1-3. PREPARATION FOR PERFORMANCE TESTIADJUSTMENT
This paragraph provides the information which you must know, and the steps you must
perform, before starting the Performance TestIAdjustment.


1-3-1. SET THE LINE VOLTAGE SELECTION SWITCH

The Line Voltage Selection Switch on the HP 4195A's rear panel must be set to the line
voltage in your area, BEFORE turning the HP 4195A ON.


1-3-2. WARMING UP THE HP 4195A

The HP 4195A must be warmed up for at least 30 minutes, before starting the Performance
Test and Adjustment.


1-3-3. EXPRESSION FOR THE KEYS AND SOFTKEYS IN THIS MANUAL

In the remainder of this manual, softkeys are indicated in boldface type and enclosed in
single quotes (e.g., 'NETWORK' softkey), and keys are indicated in boldface type only (e.g.,
PRESET key).


1-3-4. INITIALIZING THE HP 41 95A

The performance test and adjustment procedures begin with the HP 4195A in its initialized
state. So, after setting the HP 419514's measurement configuration (NETWORK, SPEC-
TRUM, IMPEDANCE, S11, S12, S21, or S22), initialize the HP 4195A by pressing the PRE-
SET key (or enter the "RST" command from the Keyboard Input Line on the HP 4195A's
display).

                                           NOTE

     Be sure to first select the CONFIGuration, then press the PRESET key. The initial-
     ization parameters depend on the measurement configuration selected.
1-3-5. HOW TO SET UP THE HP 4195A

The HP 4195A is set up by pressing the HP 4195A's front panel keys and softkeys. The HP
4195A can also be set up by entering the HP 4195A's Device Dependent Commands which
are displayed on the Keyboard lnput Line by pressing the alphabetical keys when the BLUE
shift key is ON.

In the performance testladjustment procedures, the COMMANDS (HP 4195A Device Depend-
ent Commands) to set the test condition are listed. If you are familiar with the HP 4195A
front panel operation, use the front panel keys to set up the HP 4195A. Otherwise, enter the
COMMANDSfrom the Keyboard lnput Line using the BLUEIGREEN shifted alphabetical keys.

  How To Enter The COMMAND From The Keyboard lnput Line:

       1.   Press the front panel BLUE shift key, and confirm that the BLUE shift key indica-
            tor is ON.

       2.   If the character for a command is written in green on the front panel, press the
            GREEN shift key for every green character to be entered.

       3.   Press the alphabetical keys or the number keys as required.

       4.   Repeat steps 2 and 3, until the complete command is displayed on the Keyboard
            lnput Line.

       5.   Press the ENTERIEXECUTE key, to enter the command.


                                            NOTE

     When the ENTERIEXECUTE key is pressed, the BLUE shift key indicator will go
     OFF.




                                                            \
                                               Keyboard Input Line

                           Figure 1-1. Keyboard lnput Line Location
1-3-6. USER PROGRAM (AUTO SEQUENCE PROGRAM)

The HP 4195A User Program capability is used to perform some parts of the performance
test. This capability can also be used to set up the HP 4195A's test/adjustment condition.
The user program can be entered whiie in the User Program editor by pressing the keys and
softkeys that you wouid press during front panel operation or by entering the COMMANDS
using the alphabetical keys. The procedure to edit a User Program is shown below.

  How to edit a User Program:

    1. Press the PROGRAM key on the HP 4195A front panel.

    2. Press the 'EDIT' softkey and the ENTERIEXECUTE key to enter the User Program
       editor.

    3. Press the front panel keys and softkeys, or press the alphabetical keys, to display the
       commands on the program line. To use multi-statement, use a semicolon ( ; ) as the
       delimiter to separate commands.

    4. Press the ENTERIEXECUTE key to enter the command.

    5. Repeat steps 3 and 4, until all commands are entered.

    6. Press the PROGRAM key and 'QUIT editor' softkey to exit from the User Program
       editor.


When you create an User Program for the periodic test and adjustment, it will be helpful to
save the User Program on a flexible disc using the HP 4195A's internal disc drive. Refer to
HP 4195A Operation Manual for details of the User Program capability, and for the HP
4195A Device Dependent Commands.


1-3-7. HOW TO READ HP 4195A MEASUREMENT DATA

Some performance testladjustment procedures use the measured data by the HP 4195A.
The HP 4195A displays the measurement data in graphical form as a trace. The HP 4195A
displays two traces, the yellow trace is data A, and the blue trace is data B. The measure-
ment data can be read by using a marker to display the measurement data, pointed to by
the marker, in the Marker Area, as shown in Figure 1-2.
                                                              Marker Area




                          DIV      DIV        CENKR 400 000          .OW te
                         10.00    10.00          BM 2 OQO ~ . o o o
                                                  P                         te
                        RBW: i K H z B t : 7 . n a . c R U S B U R J O . T - ~

                                       Figure 1-2. Marker ,Area
                                                   1-7
1-4. INTERCONNECTION CABLES

The HP 4195A consists of a Control Unit (unit on the top), and a Measurement Unit (unit on
the bottom). These units are interconnected as shown in Figure 1-3.

Some of the adjustments require the longer lnterconnection Cables. In these adjustments,
use the longer lnterconnection service Cables, as shown in Figure 1-3, instead of the stan-
dard short lnterconnection Cables. Unless instructed to use the longer cables, use the
furnished standard short lnterconnection Cables.




                             Figure 1-3. lnterconnect~onCables
                                                                      PERFORMANCE TESTS




                                       SECTION 2

                             PERFORMANCE TESTS


2-1. INTRODUCTION
This section provides the test procedures used to verify that the HP 4195A's specifications
listed in the HP 4195A Operation Manual are met. All tests can be performed without access
to the interior of the instrument. The Performance Tests can also be used to perform in-
coming inspection, and to verify that the HP 4195A meets performance specifications after
troubleshooting or adjustment. If the performance tests indicate that the HP 4195A is not
operating within the specified limits, check your test setup, and then proceed to Adjustments
or Troubleshooting, if necessary.


                                              NOTE

           Perform all performance tests in an ambient temperature of 23 O Ck5 O C.


2-2. PERFORMANCE TEST RECORD
Record the performance test results in the Test Record at the end of this section (Photocopy
the Test Record and use the photocopy). The Test record lists all test specifications and
their acceptable limits. Test results recorded during incoming inspection can be used for
comparison purposes during periodic maintenance, troubleshooting, and after repair or
adjustment.


                                              NOTE

      The test limits indicated for each test do not take into account the measurement
      error of the test equipment used. Be sure to take the test equipment's measure-
      ment error into account when determining whether or not the HP 4195A meets
      specifications.


2-3. CALCULATION SHEET
The Calculation Sheet is used to as an aid for recording raw measurement data, and cal-
culating the performance test results.

 The performance test procedure gives the test sequence for performing a test, the complete
 set of measurement data are recorded on the calculation sheet, the results are calculated
 using the equations given on the calculation sheet, and the results are transcribed to the
 Performance Test Record.

 The Calculation Sheet list the test points, and the test settings.
How to Use the Calculation Sheet:

     1.    Photo copy the Calculation Sheet.

    2.     Follow the performance test procedure and record the measurement value, the
           HP 4195A's reading, etc., into the specified column on the Calculation Sheet.

     3.    Calculate the test result using the appropriate equation given on the Calculation
           Sheet.

     4.    Record the test result into the TEST RESULT column on the Calculation Sheet or
           the Performance Test Record sheet as appropriate.


2-4. CALIBRATION CYCLE
The HP 4195A requires periodic performance verification. The frequency of performance
verification depends on the operating and environmental conditions under which the HP
4195A is used. Verify the HP 4195A's performance, using the performance tests described
in this section, at least once a year. To minimize instrument down-time and to ensure opti-
mum operation, perform preventive maintenance and calibration at least twice a year.
                                 PERFORMANCE TESTS
2-6. INTERNAL SYNTHESIZER FREQUENCY ACCURACY TEST
This test uses an external frquency counter to test the HP4195A's Internal Synthesizer Fre-
quency Accuracy.


SPECIFICATION:

       Frequency Accuracy                         +20 ppm (23 +5 C)
                                                  +  ppm (23 -15' C; with Option 001)
                                                     I


EQUIPMENT:

       Frequency Counter
       BNC(m)-BNC(m) Cable, 61 cm
       N(m)-BNC(f) Adapter


PROCEDURE:

     1. Set up the HP 4195A as follows.

                                                                     COMMAND

        CONFIGURATION                           NETWORK              FNCl
        INITIALIZE                                PRESET             RST
        SPAN                                        0 HZ             SPAN= 0


     2. Connect the BNC(m)-BNC(m) Cable from HP 4195A OUTPUT S1, to the Frequency
        Counter INPUT B, as shown in Figure 2-1.

        If the HP 4195A is equipped with Option 001, confirm that a BNC(m)-BNC(m) cable
        is connected between the Control Unit's EXT REFERENCE connector and the Mea-
        surement Unit's REFERENCE OVEN connector. If Option 001 is NOT installed,
        connect nothing to the EXT REFERENCE connector.




                                                          HP 5385A
                                                                            PUT B




               Figure 2-1. Internal Synthesizer Frequency Accuracy Test Setup

                                            2-3
                         PERFORMANCE TESTS
3. Set the HP 4195A CENTER FREQUENCY in according to the table below. Record
   the frequency counter reading on the Performance Test Record.


                                 NOTE

The 100 MHz CENTER FREQUENCY can be set by pressing the CENTER, 1, 0, 0,
MHz/!/ keys.
                                   PERFORMANCE TESTS
            -




2-7. RESOLUTION BAND WIDTH ACCURACY TEST
This test measures the HP 4195A's Resolution Bandwidth (RES BW). the internal reference
signal (10 MHz) is used as a signal source.


SPECIFICATION:

       Resolution Bandwidth Accuracy               +- 1O0/0


EQUIPMENT:

     BNC(m)-BNC(m) Cable, 122 cm
     N(m)-BNC(f) Adapter


PROCEDURE:

    1. Set up the HP 4195A as follows.

                                                                       COMMAND

       CONFIGURATION                          SPECTRUM                 FNC2
       INITIALIZE                                PRESET                RST
       CENTER                                    10 MHz                CENTER= 10 M
       VIDEO FILTER                                   on               VFTR1
       INPUT ATTENUATOR (Rl)                       40 dB               ATR1= 40
       SWEEP TRIGGER MODE                        SINGLE                SWM2


                                            NOTE

     The INPUT ATTENUATOR can be set by pressing REF ATTEN and the up/down
     keys.


     2. Connect the BNC(m)-BNC(m) Cable to the HP 4195A INPUT R1 from its rear panel
        10 MHz OUTPUT, as shown in Figure 2-2.

                                                              OUTPUT




                           N(m)-BNC(I)
                                  Adapter

                         Figure 2-2. RES BW Accuracy Test Set up
                              PERFORMANCE TESTS


3. Enter the following test program to use the HP 4195A User Program (ASP) capability.
   The keystrokes are shown in the note below.

   10             *
        SPAN= 1.7 RBW                              Set span
   20   SWTRG                                      Make a single sweep measurement
   30   AUTO                                       Perform auto scaling
   40   MCF4                                       Use o marker and Line Cursor
   50   MKMX                                       Move o marker to the max point
   60   DLCURS= 9                                  Move line cursor to -3 dB point
   90   WIDTH1                                     Read -3 dB bandwidth (RES BW)
   80   END


                                         NOTE

Test program can be entered using the following keystrokes. (The ENTER/
EXECUTE key is abbreviated as ENTER.)

 Begin editing by pressing PROGRAM, 'SCRATCH', ENTER, 'EDITq, ENTER.

 LINE                                  KEYSTROKES

                 .,
   10 SPAN, 1, 9, MATH OPERATOR, '' RES BW, left arrow, DEL CHAR,
                                     ,,
      ENTER
   20 TRIGIRESET, ENTER
   30 SCALE REF, 'rectan X-A&B9, 'AUTO SCALE', ENTER
   40 MODE, 'oMKR & LCURS', ENTER
   50 MKR+, 'o MKR menu', 'MKR+MAXY, ENTER
   60 MKR+, '0-LCURS menuy,'m0rel/2~,"VALUE entry', -, 3, ENTER
   70 6WIDTHon off', 1, ENTER
   80 PROGRAM, 'END', ENTER

 Press 'QUIT editor' to end editing.


4. Set the HP 4195A RES BW in according to the table below. Run the test program
   (press PROGRAM, WJN'), and wait until sweep ends.

5. Record the displayed WIDTH value on the Performance Test Record. Repeat step 4.


                                       RES BW

                                       100   Hz
                                       300   Hz
                                         1   kHz
                                         3   kHz
                                        10   kHz
                                        30   kHz
                                       100   kHz
                                       300   kHz
                                i
                                 PERFORMANCE TESTS
2-8. AMPLITUDE MEASUREMENT ACCURACY TEST
This tests the HP 4195A's receiver Amplitude Measurement Accuracy. This test consists of
comparing the absolute power level of each input with a power meter or a digital voltmeter.

SPECIFICATION:

     Amplitude Measurement Accuracy                   k1.0 dB. (at 50 MHz, at the upper limit
                                                      level of Input Range)


EQUIPMENT:

       Power Meter
       Power Sensor
       Step Attenuator
       Signal Generator
       N(m)-N(m) Cable, 61 cm                                                           2 ea.
       N(f)-N(f) Adapter
       BNC(m)-BNC(m) Cable, 122 cm


PROCEDURE:

     1. Record the Step Attenuator 50 MHz calibration value in the Calculation Sheet column
        [ a 1.

    2. Calibrate the Power Meter for the Power Sensor.

     3. Configure the test setup shown in Figure 2-3. The N(m)-N(m) cable must be con-
        nected between the Step Attenuator and the Power Sensor with the N(f)-N(f) Adapter.




                                    N(m)-N(m) Cable
                                                                HP 8482A


                                                                             HP 436A
                                                      N(f)-N(fl Adapter

                                      HP 8496A




                  Figure 2-3.Amplitude Measurement Accuracy Test Setup
                                 PERFORMANCE TESTS
4. Set the Signal Generator AMPLITUDE and FREQUENCY, and the Step Attenuator as
   follows.

      Signal Generator Output Amplitude                    10 dBm
      Signal Generator Output Frequency                    50 MHz
      Step Attenuator                                       0 dB

5. Record the Power Meter reading in the Calculation Sheet column [ b 1.


                                        NOTE

              The power meter reading should be +I0 dBm +2 dB.


6. Set up the HP 4195A as follows.

                                                                    COMMAND

   CONFIGURATION                             SPECTRUM               FNC2
   INITIALIZE                                   PRESET              RST
   SWEEP TRIGGER MODE                          MANUAL               SWM3
   CENTER                                        50 MHz             CENTER= 50 M
   SPAN                                             0 Hz            SPAN= 0
   RES BW                                          10 Hz            RBW= 10
   VIDEO FILTER                                       on            VnR1


7 . Disconnect the N(m)-N(m) cable from the Power Sensor, and connect it to HP 4195A
    INPUT R1 as shown in Figure 2-4. Connect the BNC(m)-BNC(m) Cable between the
    Signal Generator's TIME BASE OUTPUT connector and the HP 4195A's EXT REFER-
    ENCE connector.




                             BNCh)-BNCh) Cable

              To TIME BASE                       To EXT REFERENCE
                 OUTPUT

            0      1         0
      0

     u                       u                                                     3
            HP 8656A


                                      HP 8496A



             Figure 2-4. Amplitude Measurement Accuracy Test Setup
                                PERFORMANCE TESTS
8. Set the Step Attenuator, the HP 4195A IF RANGE, and the INPUT ATTENUATOR as
   follows, and then record the HP 4195A data A value (MAG) into Calculation Sheet
   column [ c 1.


         Step                      HP 41 95A                  HP 4195A
      Attenuator               INPUT ATTENUATOR               IF RANGE

        20 d B                      10 dB                   NORMAL
        30 d B                      10 dB                LOW DISTORTION


                                         NOTE

 The IF RANGE can be selected by selecting and pressing a softkey that appears
 after REF ATTEN is pressed.


9. Set the HP 4195A IF RANGE to the HIGH SENSlTlVlTY mode.

10. Set the Step Attenuator and the HP 4195A INPUT ATTENUATOR as follows, and
    record the HP 4195A data A value (MAG) into Calculation Sheet column [ c 1.


                 Step Attenuator         HP 4195A INPUT ATTENUATOR

                     50   dB                         0   dB
                     40   dB                        10   dB
                     30   dB                        20   dB
                     20   dB                        30   dB
                     10   dB                        40   dB
                      0   dB                        50   dB


11. Change the ~ttenuatorConnection and the HP 4195A INPUT PORT in according to
    the table below, and repeat step 10.

                                                                            7


                 Attenuator Connection          HP 4195A INPUT PORT

                           TI                       T I ("PORTS")
                           R?                       R2 ("PORT3")
                           T2                       T2 ("PORT4")

                                         NOTE

  To set the INPUT ATTENUATOR for INPUT PORTS TI, R2, and T2, press the
  proper REF ATTEN or TEST ATTEN key then press the up/down arrow keys until
  the desired attenuation is displayed.


12. Use the equation given on the Calculation Sheet to calculate the test results (abso-
    lute accuracy), and transcribe the test results to the Performance Test Record.
                                 PERFORMANCE TESTS
2-9. AMPLlTUDE MEASUREMENT LlNEARlTY TEST                        ,




This tests the HP 4195A1s receiver Amplitude Measurement Linearity. The linearity is deter-
mined by measuring several input signal levels. The internal signal source and a step at-
tenuator are used to apply these test signals.


SPECIFICATION:


     e Linearity (at




                          I        Where         IF Range: Low Distortion mode     CdB)
        Each Input l e v e l
          (-30 t o +20 dBm, lOdB step)           Resolution Band Width: 10 Hz



EQUIPMENT:

        Step Attenuator                                      HP 8496A/G Opt.OO1
        N(m)-N(m) Cable, 61 cm                               HP 115008                2 ea.


 PROCEDURE:

     1. Record the Step Attenuator 50 MHz calibration value into the Calculation Sheet
        column [ b 1.
                             PERFORMANCE TESTS


2. Set up the HP 41 95A as follows.

                                                               COMMAND

   CONFIGURATION                           SPECTRUM         FNC2
   INITIALIZE                                  PRESET       RST
   SWEEP TRIGGER MODE                         MANUAL        SWM3 .
   CENTER                                  49.999 MHz       CENTER= 49.999 M
   SPAN                                            0 Hz     SPAN= 0
   RES BW                                         10 Hz     RBW= 10
   PORT SELECT                           SOURCE CHI         PWR1
   SOURCE AMPLITUDE (S1)                       -30 dBm      OSC1= -30
   INPUT ATTENUATOR (R1)                           0 dB     ATR1= 0
   IF RANGE                           LOW DISTORTION        IRNG2


                                        NOTE

SOURCE S1 can be set by pressing CONFIG, 'PORT SELECT', and 'SOURCE
CHI'.


3. Connect the Step Attenuator to the HP 4195A as shown in Figure 2-5, and set the
   Step Attenuator to 0 dB.




              Figure 2-5. Amplitude Measurement Linearity Test Setup


 4. Vary the HP 4195A SOURCE AMPLITUDE (S1) with upldown arrow keys, so that HP
    4195A data A (MAG) value is as close as possible to -30 dBm, and then record the
    data A (MAG) value into the Calculation Sheet column [ c 1.

 5. Increment the Step Attenuator setting from 10 dB to 80 dB in IOTB
                                                                   steps, and re-
    cord the HP 4195A data A (MAG) value at each step into the calculation Sheet
    column [ c 1.

 6. Use the equation given on the Calculation Sheet to calculate the test results, and
    transcribe the test results to the Performance Test Record.
                                 PERFORMANCE TESTS
2-10. AMPLITUDE MEASUREMENT FREQUENCY RESPONSE TEST
This tests the HP 4195A's receiver Amplitude Measurement Frequency Response. This test
consists of comparing the absolute power level of each input with a digital voltmeter or a
power meter reading at several frequencies. The signal is applied from the internal signal
source.


SPECIFICATION:
    Amplitude Measurement Frequency Response
                                      51.5 dB (when attenuator = 10 dB)


EQUIPMENT:

       Digital Voltmeter
       Power Meter
       Power Sensor
       Power Splitter
       50 fl Feedthrough
       N(m)-N(m) Cable, 61c m
       BNC(m)-BNC(m) Cable, 61cm
       N(m)-N(m) Adapter
       N(m)-BNC(f) Adapter
       BNC(f)-Dual Banana Plug Adapter


PROCEDURE:

     1. Set up the HP 4195A as follows.

                                                                    COMMAND

        CONFIGURATION                         SPECTRUM              FNC2
        INITIALIZE                               PRESET             RST
        SWEEP TRIGGER MODE                      MANUAL              5wm3
        SPAN                                         0 Hz           SPAN= 0
        RES BW                                      10 Hz           RBW= 10
        PORT SELECT                          SOURCE CHI             PWR1
        SOURCE AMPLITUDE (S1)                    -14 dBm            OSC1= -1 4
        INPUT ATTENUATOR (ALL)                      10 dB           ATR1= 10
                                                                    ATTI= 10
                                                                    ATR2= 10
                                                                    ATT2= 10
        IF RANGE                          LOW DISTORTION            1rng2
        VIDEO FILTER                                  on            VFTR 1
                                       PERFORMANCE TESTS


2. Configure the test equipment as shown in Figure 2-6. Use the N(m)-N(m) Adapter to
   connect the Power Splitter to HP 4195A INPUT R1. Connect the 50 f2 feedthrough at
   the Digital Voltmeter INPUT. Connect the Voltmeter input cable to the Power Splitter.




               N (m) -N (m) A d a p t e r                DUAL-BANANA t o
                                                             BNC (f) A d a p t e r
                HP 1 1 6 6 7 A       HP 3 4 5 6 A




                  ..-
                  I
                  I                                 BNC (m) -BNC (m) C a b l e

                      HP 8 4 8 2 A



        Figure 2-6. Amplitude Measurement Frequency Response Test Setup


3. Set the the Digital Voltmeter to read AC Volts and press the MATH, 4, 5, 0, STORE,
   and 4 keys, in sequence, to convert and display the voltage readings in dBm units.

4. Set the HP 4195A CENTER FREQUENCY to 10 Hz, and record the HP 4195A data A
   (MAG) value and the reading of the Digital Voltmeter into the Calculation Sheet
   columns [ a ] and [ b 1, respectively.

5. Set the HP 4195A CENTER FREQUENCY to 100 kHz, and record the reading of the
   Digital Voltmeter in Calculation Sheet column [ c 1.

6. Connect the Power Sensor to the Power Meter, and calibrate the Power Meter to the
   Power Sensor.

7. Disconnect the Digital Voltmeter input cable from the Power Splitter, and connect the
   Power Sensor to the Power Splitter.
                             PERFORMANCE TESTS


8. Set the HP 4195A CENTER FREQUENCY to the following values, and record HP
   4195A data A (MAG) value, and the Power Meter reading into the Calculation Sheet
   columns [ a ] and [ b 1, respectively.                                                I




                                         NOTE

       Before recording the value, confirm that both the HP 4195A's data A and
       the Power Meter reading are within -20 dBm 24 dB.

             CENTERFREQUENCY

                100 kHz                         224.99 MHz (R1 only)
                50 MHz
              9.99 MHz (R1 only)                339.99 MHz (R1 only)
                10 MHz
            149.99 MHz (R1 only)
               150 MHz


 9. Disconnect the Power Splitter with the N(m)-N(m) Adapter from the HP 4195A INPUT.

10. Disconnect the Power Sensor from the Power Splitter, and connect the Digital Volt-
    meter input cable to the Power Splitter.

11. Set the HP 4195A INPUT PORTS as follows, and connect the Power Splitter using the
    N(m)-N(m) Adapter to HP 4195A INPUTS TI, R2, and T2, and repeat steps 3 through
    16 for each setting.




                                      NOTE

      When performing step 8, skip CENTER FREQUENCY(s) labeled "R1 only".


12. Use the equation given on the Calculation Sheet to calculate the test results, and
    transcribe the test results to the Performance Test Record.
                                  PERFORMANCE TESTS
2-11. SECOND HARMONIC DISTORTION TEST
This test measures the HP 4195A receiver's Second Harmonic Distortion. This test measures
the second harmonic (double frequency) level of input signal. A low-pass filter is inserted
between the external signal generator and the input in order to eliminate the Signal Genera-
tor's own second harmonic from adding error directly.


SPECIFICATION:
      Second Harmonic Distortion             5 -70 dBc referenced to the sinusoidal signals
                                             (2 2 MHz) which is equal to every Input Ran-
                                             ges (IF Range: Low Distortion mode)


EQUIPMENT:

        Signal Generator
        50 MHz Low Pass Filter
        N(m)-N(m) Cable, 61 cm                                                         2 ea.
        BNC(m)-BNC(m) Cable, 122 cm
        N(f)-BNC(m) Adapter
        N(f)-BNC(f) Adapter


PROCEDURE:

     1. Set up the HP 4195A as follows.

                                                                     COMMAND

        CONFIGURATION                          SPECTRUM              FNC2
        INITIALIZE                                PRESET             RST
        SWEEP TRIGGER MODE                        SINGLE             SWM2
        CENTER                                    50 MHz             CENTER= 50 M
        SPAN                                       50 kHz            SPAN= 50 K
        RES BW                                      1 kHz            RBW= 1 K
        INPUT ATENUATOR (R1)                        30 dB            ATR1= 30
        IF RANGE                          LOW DISTORTION             lRNG2
                                PERFORMANCE TESTS
2. Set up the test configuration shown in Figure 2-7. Connect the BNC(m)-BNC(m)
   cable between the Signal Generator's TIME BASE OUTPUT connector and the
   HP 4195A's EXT REFERENCE connector.


                     BNC(m) -BNC(ml   Cable                T o EXT REFERENCE




             ~(f)-BNC(m) Adapter

                Figure 2-7. Second Harmonic Distortion Test Setup


3. Set the Signal Generator FREQUENCY to 50 MHz, and AMPLITUDE to 0 dBm.

4. Press the TRIGIRESET key, and wait until the single sweep measurement is
   completed.

5. Press the MKR*, 'MKR+MAX' keys to move the o marker to the peak point. Record
  -the HP 4195A data A (MAG) value into the Calculation Sheet column [ a 1, (this is the
   reference value).

6. Change the HP 4195A CENTER FREQUENCY to 100 MHz, and press the TRIG/
   RESET key.

7. Move the o marker to the peak point, and record the HP 4195A .data A (MAG) value
   into the Calculation Sheet column [ b 1.

8. Use the equation given on the Calculation Sheet to calculate the test result, and
   transcribe the test results to the Performance Test Record.
                                 PERFORMANCE TESTS

2-12. THIRD ORDER INTERMODULATION DISTORTION TEST
This test measures the HP 4195A's receiver Third Order Intermodulation Distortion. A direc-
tional bridge is used to combine the two signals applied by two signal generators, and the
frequency of these signals is separated by 0.5 MHz form each other. This performance is
determined by measuring the amplitude of intermodulation frequency.


SPECIFICATION:
      Third Order lntermodulation Distortion
                                            I -80 dBc referenced to two sinusoidal signals
                                            (2 2 MHz; 500 kHz separation) which are lower
                                            6 dB then every Input Ranges. (IF Range: Low
                                            Distortion mode)


EQUIPMENT:

       Signal Generator                               HP 86568                        2 ea.
       BNC(m)-BNC(m) Cable, 122 cm                    PN 8120-1840                    2 ea.
       N(m)-N(m) Cable, 61 cm                         HP 115008                       3 ea.
       Signal Combiner                                PN 41952-65001
                                                      (included in HP 41952A)
       50 R Termination                               HP 909C Opt. 012
       N(f)-N(f) Adapter                              HP PN 1250-0777                 2 ea.


PROCEDURE

     1. Set up the HP 4195A as follows.

                                                                    COMMAND

        CONFIGURATION                          SPECTRUM
        INITIALIZE                                PRESET
        SWEEP TRIGGER MODE                       MANUAL
        SPAN                                         0 Hz
        RES BW                                      10 Hz
        INPUT ATTENUATOR                             0 dB
        IF RANGE                          LOW DISTORTION
                                              PERFORMANCE TESTS
2. Set up the test configuration as shown in Figure 2-8. Connect the BNC(m)-BNC(m)
   cable between the Signal Generator's TlME BASE OUTPUT connector and the
   HP 41 95A's EXT REFERENCE connector.

                   To TlME BASE OUTPUT                        BNChkBNChd Cable


                          -
                         To TIME BASE INPUT                                      To EXT REFERENCE




  Signsl Generator 1


        HP 86568




       V I
  Signal Generator 2




                          I Ld7TA1
                             N(fW(O Adapter

                                 Termination   I     I
                                                   RF INPUT
                          N h k W Cable

                   Figure 2-8. Third Order Intermodulation Distortion Test Setup


3. Set the OUTPUT AMPLITUDE of Signal Generators 4 and 2, to -23 dBm and -30 dBm,
   respectively.
                            PERFORMANCE TESTS


4. Set the OUTPUT FREQUENCY of Signal Generators 1 and 2 as follows, and repeat
   steps A through E



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