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Errata
Title & Document Type: 4342A Q-meter Operating and
Service Manual
Manual Part Number: 04342-90006
Revision Date: March 1983
Thanks to John Day who provided this scanned copy
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.
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MET6LoGY
JAN21 1986
thERATING AND SERVICE MANUAL
i
434.2A.
.
I?!! HEWLETT
PACKARD
COPYRIGHT AND DISCLAIMER NOTICE
Copyright - Agilent Technologies, Inc. Reproduced with the permission of Agilent
Technologies Inc. Agilent Technologies, Inc. makes no warranty of any kind with regard
to this material including, but not limited to, the implied warranties of merchantability
and fitness for a particular purpose. Agilent Technologies, Inc. is not liable for errors
contained herein or for incidental or consequential damages in connection with the
furnishing, performance, or use of this material or data.
CERTI FI CATI 0 N,
The Hewlett-Packard Company certifies that this instrument was
thoroughly tested and inspected and found to meet its published
specifications when it was shipped from the factory. The Hewlett-
Packard -Company further certifies that its calibration meusure-
ments are traceable to the U.S. National Bureau of Standards to
the extent allowed by the Bureau's calibration facility.
WARRANTY AND ASSISTANCE
All Hewlett-Packard products are warranted against defects in
materials and workmanship. This warranty applies for one year
from the date of delivery, or, in the case of certain major compo-
nents listed in the operating manual, for the specified period. We
will repair or replace products which prove to be defective during
the warranty period provided they are returned to Hewlett-
Packard. No other warranty is expressed or implied. We are not
liable for consequential damages.
Service contracts or customer assistance agreements are available
for Hewlett-Packard products that require maintenance and re-
pair on-site.
For any assistance, contact your nearest Hewlett-Packard Salesand
Service Office. Addresses are provided at the back of this manual.
OPERATING AND SERVICE MANUAL
MODEL 4342A
Q METER
SERIAL NUMBERES COVERED
This manual applies directly to Model 43428 Q Meter
with serial prefixed 12125. Backdating changes in
SectionVII cover instruments with serials 12125-00590
and below. Instruments with higher serial prefix will
be covered in an Updating Manual Supplement at the
first of the manual.
OPTIONS COVERED
This manual cover-es Option 001 instruments as well
as the standard instrument.
aCOPYRIGHT: YOKOGAWA-HEWLETT-PACKARD, LTD., 1970
9-1, TAKAKURA-CHO, HACHIOJI-SHI, TOKYO, JAPAN
Manual Part No. 04342-90009
Microfiche Part No. 04342-90059 Printed: MAR. 1983
HEWLETT
PACKARD
Table of Contents Model 4342A
TABLE OF CONTENTS
Section Title Page
I GENERAL INFORMATION ................................... 1-I
l-l. Introduction.. ....................................... l-l
1-3. How the 4342A Measures ............................. l-2
l-8. Instruments Covered by Manual ....................... l-2
1-13. Specifications ....................................... l-3
1-15. Accessories Supplied ................................ 1-3
1-17. Accessories Available ............................... I-3
l-19. Options.. ........................................... l-3
II INSTALLATION ........................................... 2-l
2-l. Introduction ......................................... 2-i
2-3. Initial Inspection ..................................... 2-l
2-4. Mechanical Check .............................. 2-I
2-6. Performance Check ............................. 2-I
2-8. Damage Claim ................................. i::
2-11. Storage and Shipment .................................
2-12. Packaging ..................................... 2-l
2-13. Environment ................................... 2-I
2-14. Power Connection .................................... i-t
2-15. Line Voltage ................................... -
2-16. Power Cable ................................... 2-1
III OPERATION ........................................................................................ ;-;
3-l. Introduction -
3-3. Panel Controls, Connectors and Indicators ............. 3-l
3-5. Q Measurement General .............................. 3-l
3-8. Go/No-Go Function .................................. 3-l
3-10. Measurement Terminals .............................. 3-5
3-12. How to Connect Unknown .............................. 3-5
3-14. Measurement Parameters and Connection Methods ...... 3-5
3-16. Direct Method Limitations ....................... 3-5
3-18. Expansion of Measurement Ranges ............... 3-6
3-20. Capacitance Measurement ....................... 3-6
3-22. Resistance Measurement ........................ 3-6
3-24. High Q Measurement ........................... 3-7
3-26. Supplemental Equipment Used in Parallel
and Series Methods ......................... 3-7
3-30. Basic Q Meter Measurements ......................... 3-11
3-31. Quality Factor and Inductance
Measurements (Direct Connection) ........... 3-11
3-33. Q Measurement ................................ 3-11
3-35. dQ Measurement ............................... 3-12
3-37. Inductance Measurement ........................ 3-12
3-39. Inductance Measurement (at a desired frequency). .. 3-13
3-41. Measurement Requiring Corrections ................... 3-13
3-42. Effects of Distributed Capacitance ................ 3-13
3-45. Measuring Distributed Capacitance
(Preferred Method) ......................... 3-14
3-47. Measuring Distributed Capacitance
(Approximate Method, Cd IlOpF) ............ 3-15
3-49. Correction for Q ............................... 3-16
3-55. Parallel and Series Connection Measurement Methods ... 3-1'7
3-56. General ....................................... 3-17
3-60. Additional Error Discussion ................... 3-17
3-64. Parallel Measurements ............................... 3-18
3-65. High Inductance Measurement .................... 3-18
3-67. Low CapacitanceMeasurement (~45OpF) .......... 3-19
3-69. High Resistance Measurement ................... 3-20
3-71. Dielectric Measurement ........................ 3-21
Model 43426 Table of Contents
Section Title Page
3-73. Series Measurements ................................ 3-23
3-74. Low Inductance Measurement .................... 3-23
3-76. High Capacitance Measurement (>450pF) ......... 3-24
3-78. Self-resonant Frequency Measurement
of High Capacitors .......................... 3-24
3-80. Low Resistance Measurement .................... 3-26
IV THEORY OF OPERATION ................................... 4-l
4-l. Introduction.. ....................................... 4-1
4-3. Q Determination and Measurement ..................... 4-l
4-6. Simplified Block Diagram ............................. 4-l
4-8. Block Diagram Description ........................... 4-l
4-10. Oscillator and Impedance Converter (AlAl) ....... 4-l
4-12. RF Power Amplifier (AlA2) ..................... 4-l
4-14. ALC Amplifier (P/O A8) ........................ 4-2
4-16. Q/AQ Range Attenuator (A3) ..................... 4-2
4-18. Tuning Capacitor and Injection Transformer (A2). .. 4-2
4-21. RF Amplifier and Detector (A5) .................. 4-2
4-24. DC Amplifier (A6) .............................. 4-2
4-26. Q Limit Selector (A7) ........................... 4-2
4-28. Circuit Details ...................................... 4-2
4-29. LC Oscillator (P/O AlAl) ....................... 4-2
4-31. Impedance Converter (P/O AlAl) and RF
Power Amplifier (AlA2) .... 4-3
4-33. ACL Amplifier (P/O A8) ........................ 4-3
4-35. Q Range Attenuator (A3) ........................ 4-3
4-37. Impedance Converter, RF Amplifier
and Detector (A5) ...... 4-3
4-39. DC Amplifier (A6) .............................. 4-3
4-41. Q Limit Selector (A7) ........................... 4-3
4-43. Power Supply (P/O ~8) ......................... 4-3
V MAINTENANCE ............................................ 5-l
5-l. Introduction ......................................... 5-l
5-3. Test Equipment Required ............................. 5-l
5-5. Q Accuracy Considerations ........................... 5-l
5-7. Option .............................................. 5-l
5-9. Performance Checks ................................. 5-3
5-11. Frequency Accuracy Check.. .................... 5-3
5-12. QRange Check.. ............................... 5-3
5-13. AQ Range Check ............................... 5-4
5-14. Capacitance Accuracy Check .................... 5-4
5-15. Q Limit Operation Check ........................ 5-5
5-16. Adjustment and Calibration Procedures ................ 5-8
5-18. Power Supply Adjustment ........................ 5-8
5-19. Oscillator Level Adjustment ..................... 5-8
5-20. Oscillator Frequency Adjustment ................. 5-8
5-21. Q Voltmeter Adjustment ........................ 5-9
5-22. Q Analog Output Adjustment ..................... 5-10
5-23. Frequency Response Adjustment ................. 5-11
5-24. Q Limit Selector Adjustment ..................... 5-11
5-25. Option 001 Maintenance Instructions ................... 5-12
5-27. Option 001 Performance Checks .................. 5-12
5-29. Option 001 Calibration and Adjustment Procedures . 5-13
5-31. Dial Re-stringing Instructions ......................... 5-14
5-34. Frequency Dial ................................. 5-14
5-35. L/C Dial ...................................... 5-14
5-36. AC Dial ....................................... 5-14
5-37. Troubleshooting Guides ............................... 5-18
5-39. High Frequency Line Noise ...................... 5-18
5-40. Operating in a Strong Electromagnetic Field ....... 5-18
5-41. Operating in High Humidity Environment .......... 5-18
..
111
Table of Contents Model 4342A
List of Tables
Section Title Page
5-42. Elementary Troubleshooting Guide ..................... 5-18
5-43. Meter Zeroing Troubles ........................ 5-18
5-44. Incorrect Q Meter Indication ..................... 5-18
5-45. Low Q Indication in High Frequency
Measurements .......... 5-19
5-46. Faulty Q Limit Operation ....................... 5-19
VI REPLACEABLE PARTS .................................... 6-l
6-l. Introduction.. ....................................... 6-l
6-6. Ordering Information ................................. 6-l
VII MANUAL CHANGES AND OPTIONS .......................... 7-l
7-1. Options ............................................. 7-l
7-3. Special Instruments ................................. 7-l
7-5. Manual Changes ..................................... 7-l
7-7. Later Instruments .............................. 7-l
7-8. Earlier Instruments ............................ 7-l
7-9. Option 001 Instruments ......................... 7-l
VIII CIRCUIT DIAGRAMS ....................................... 8-l
8-l. Introduction ......................................... 8-l
8-4. GeneralNotes ....................................... 8-l
APPENDIX OPTION 001 ........................................ A-l
I Replaceable Parts ................................... A-l
II Manual Changes ..................................... A-l
III Circuit Diagrams .................................... A-2
LIST OF TABLES
Number Title Page
l-l. Specifications ....................................... 1-2
l-2. Accessories - Typical Values ......................... l-3
2-l. AC Line Fuse ....................................... 2-l
3-l. Methods of Connecting Unknown ....................... 3-10
3-2. 16451A (4342A-KOl) Typical Characteristics ............ 3-21
3-3. Formulas for Calculating Q and Impedance Parameters
from Parallel and Series Measurements .......... 3-27
3-4. Formulas Relating Series and Parallel Components ...... 3-27
5-l. Recommended Test Equipment ........................ 5-o
5-2. Q Correlation Factors ............................... 5-l
5-3. Frequency Accuracy Check ........................... 5-2
5-4. QRange Check ...................................... 5-3
5-5. Capacitance Accuracy Check .......................... 5-5
5-6. Adjustable Components ............................... 5-7
5-7. Frequency Adjustment. ............................... 5-8
5-8. Frequency Accuracy Check (Option 001) ................ 5-12
5-9. Frequency Adjustment (Option 001). .................... 5-13
6-l. List of Reference Designators and Abbreviations ........ 6-l
6-2. Reference Designation Index .......................... 6-3
7-l. Backdating Changes .................................. 7-l
A-l. Reference Designation Index for Option 001 (Al Al Ass'y). . A-3
A-2. Reference Designation Index for Option 001 (A5 Ass'y) .... A-5
iv
Model 4342A List of Illustrations
LIST OF ILLUSTRATIONS
Number Title Page
l-l. Model 4342A Q Meter .. . . .. . .. . . .. . . . .. . . . .. .. . . .. . . . l-l
3-l. Front Panel Controls ................................ 3-2
3-2. Rear Panel Controls and Connectors ................... 3-4
3-3. Measurement Terminal Circuit ....................... 3-5
3-4. Inductance Measurement Ranges vs. Frequency
(direct method) ......... 3-6
3-5. Ranges of Measurable Resistance ...................... 3-7
3-6. Zeroing Procedure ................................... 3-8
3-7. Distributed Capacitance in Direct Connection ........... 3-11
3-8. Distributed Capacitance Circuit Model ................. 3-13
3-9. Typical Variation of Effective Q and
Inductance with Frequency ....... 3-14
3-10. Correction Chart for Distributed Capacitance ........... 3-14
3-11. Residual Parameters ................................. 3-17
4-l. Series Resonant Circuit .............................. 4-o
4-2. Model 43426 Simplified Block Diagram ................. 4-O
4-3. Constant Voltage Injection System ..................... 4-2
5-l. Q Range Check ...................................... 5-2
5-2. AQ Range Check ..................................... 5-3
5-3. Capacitance Accuracy Check .......................... 5-4
5-4. Model 4342A Adjustment Locations .................... 5-6
5-5. Model 4342A Assembly Locations ...................... 5-6
5-6. Voltmeter Adjustment ................................ 5-10
5-7. Frequency Response Adjustment ...................... 5-11
5-8. Frequency Dial Restringing ........................... 5-15
5-9. Main C Dial Restringing .............................. 5-16
5-10. AC Dial Restringing .................................. 5-17
5-11. Tuning Capacitor Disassembly (top view) ............... 5-19
5-12. Troubleshooting, Oscillator Section ................... 5-21
5-13. Troubleshooting, Voltmeter Section ................... 5-19
6-l. Exploded View of Oscillator Ass'y ..................... 6-22
6-2. Exploded View of Tuning Capacitor Ass'y .............. 6-24
6-3. Exploded View of Q Range Attenuator Ass'y ............. 6-26
6-4. Exploded View of Frequency Multiplier, Over Limit
Indicator,and Frequency Scale Indicator .......... 6-27
6-5. Exploded View of Main and Vernier Capacitor
Dial Ass'y ...... 6-28
6-6. Exploded View of Oscillator Lever Ass'y ............... 6-29
6-7. Exploded View of Rear Panel .......................... 6-30
6-8. Exploded View of Handle Section ...................... 6-32
7-1. A7 04342-7707 ....................................... 7-2
7-2. All 04342-7711 ...................................... 7-2
7-3. Partial Schematic of Power Supply .................... 7-5
8-1. Schematic Diagram Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
8-2. Function Overall Block Diagram . . . . . . . . . . . . . . . . . . . . . . 8-3
8-3. Oscillator Ass'y Al, Q Range Attenuator Ass'y A3,
Power Supply & ACL Amplifier Ass'y A8,
Frequency Multiplier & Over Limit Indicator Ass'y AlO.. 8-5
List of Illustrations Model 4342A
Number Title Page
8-4. Tuning Capacitor Ass'y A2, QRange Attenuator Ass'y A3,
Impedance Converter Ass'y A4,
Meter Scale Indicator Ass'y All . . . . . . . . . . . . . . . . . . . . . . . 8-7
8-5. Q Range Attenuator Ass'y A3, Impedance Converter, RF
Amplifier &Detector Ass'y A5, DC Amplifier Ass'y A6,
Meter Scale Indicator Ass'y All . . . . . . . . . . . . . . . . . . . . . . 8-9
8-6. Q Limit Selector Ass'y A7 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Frequency Multiplier & Over Limit Indicator Ass'y A 10 . . 8-11
8-7. Power Supply & ALC Amplifier Ass'y A8 . . . . . . . . . . . . . . 8-13
A-l Oscillator Ass'y Al (Option 001) . . . . . . . . . . . . . . . . . . . . . . A-7
A-2. Impedance Converter, RF Amplifier & Detector
Ass'y A5 (Option 001) . . . . . A-9
Model 4342A
Section I
Paragraphs l-1 and 1-2
SECTION I
GENERAL INFORMATION
l-l. INTRODUCTION. specific frequencies by setting the frequency
dial to the "L" point on each frequency range.
1-2. The HP Model 4342A Q Meter is designed
to meet the requirements for making easy and Flat oscillator output, automatically level-
accurate quality factor measurements in the controlled over the entire frequency ranges,
laboratory, on the production line, or in QA is a feature of the 4342A. This advantage
incoming inspection areas. The direct read- obviates the necessity for frequent oscil-
ing,expanded scale of the 4342.4 permits meas- lator level adjustments to maintain the out-
urement of Q from 5 to 1000 and the reading put level constant or the use of a specially
of very small changes in Q resulting from matched fragile thermocouple level meter.
variation in test parameters. The long fre-
quency dial scale and the pushbutton range The high reliability of the instrument and
selector continuously cover the frequency ease of operation are the direct results of
range of 22kHz to 7OPlHz (in seven - l/3 de- these measurement advancements in the 4342A.
cade steps) and permit setting the frequency
to an accuracy of 1.5% with 1% resolution. For determing the resistance, reactance, or
quality factor of capacitance and inductance
The calibrated long-scale capacitance dials samples in the high frequency region, the
permit reading the capacitance of the 4342A is a most versatile measuring instru-
tuning capacitor at an accuracy of 1% and ment. The 4342,1 can measure the dissipation
provides the capability for varying the factor and dielectric constant of insulating
capacitance with O.lpF resolution on the materials, coefficient of coupling, mutual
vernier scale. Inductance of sample can be inductance, and the frequency characteristics
read directly from the inductance scale ad- of transformers. Accessories which extend
jacent to the capacitance scale at seven the measurement capabilities, designed for
Figure l-l. Model 4342A Q Meter.
Model 4342A
Section I
Paragraphs 1-3 to l-12
user convenience, have broad applications in delta-Q measurements can be obtained in all
in testing components and electronic mate- Q ranges by using the expanded resolution
rials, in physical and chemical research, and (X10) capability.
in related scientific fields.
l-7. The unique Q Limit selector is espe-
Pushbutton operation of frequency range and cially useful in Go/No-Go checking on the
Q/AQ range selection provides for straight- production line. The high response speed of
forward measurement. Automatic indication of the Go/No-Go indicator (compared to using a
meter scales, frequency dials, and frequency meter pointer deflection method) permits
multipliers are used, adding to the simplicity faster Go/No-Go testing. For even easier
and reading speed. testing, external indicating devices may be
remotely controlled by the Go/No-Go output
l-3. How The 4342A Measures. signal (on the rear panel).
l-4. The Q Meter is basically composed of a 1-8. INSTRUMENTS COVEREDBY MANUAL.
stable, variable oscillator, a tuning circuit
for taking resonance with an unknown sample, l-9. Hewlett-Packard uses a two-section
and a high input impedance RF voltmeter con- nine character serial number which is marked
nected across the variable capacitor which is on the serial number plate (Figure 1-2) at-
a section of the tuning circuit. tached to the instrument rear panel. The
first four digits and the letter are the se-
To measure the quality factor of a sample, a rial prefix and the last five digits are the
stable oscillator signal is injected into the suffix. The letter placed between the two
series tuning circuit composed of the vari- sections identifies country where instrument
able capacitor and the unknown (inductor). was manufactured. The prefix is the same for
At the tuned frequency, the RF voltmeter all identical instruments; it changes only
(called Q voltmeter) indicates a peak value when a change is made to the instrument. The
in the signal level increase (resonance) and suffix, however, is assigned sequentially
is proportional to the quality factor of the and is different for each instrument. The
sample measured. By injecting an oscillator contents of this manual apply to instruments
signal with a low output impedance and by with the serial number prefix(es) listed
measuring the signal level of the series re- under SERIAL NUMBERSon the title page.
sonant circuit with a high impedance volt-
meter, the quality factor of the unknown l-10. An instrument manufactured after the
samnle can be accurately determined at the printing of this manual may have a serial
resonant frequency. Additionally, various number prefix that is not listed on the title
parameters of the sample can be measured page. This unlisted serial number prefix in-
(directly and indirectly) as factors of the dicates that the instrument is different from
resonant frequency and the tuning capacity those described in this manual. The manual
which can be read from their respective dial for this new instrument may be accompanied by
scales. a yellow Manual Changes supplement or have a
different manual part number. This supple-
l-5. For accurate measurements, the 4342A ment contains "change information" that ex-
employs a unique constant voltage injection plains how to adapt the manual to the newer
system and a low output impedance injection instrument.
transformer. The oscillator signal is auto-
matically leveled by an ALC loop to provide l-11. In addition to change information, the
the constant injection voltage required by supplement may contain information for cor-
the Q range in use. This obviates the need recting errors (called Errata) in the manual.
of an oscillator level control or the fragile To keep this manual as current and accurate
thermocouple level meter (as used in tradi- as possible, Hewlett-Packard recommends that
tional Q Meters). The unique injection you periodically request the latest Manual
transformer along with the high quality low Changes supplement. The supplement for this
loss tuning capacitor contribute minimal addi- manual is identified with this manual's title
tional loss to the measurement circuit (reso- page. Complimentary copies of the supplement
nant circuit) and greatly improve the Q ac- are available from ltewlett-Packard. If the
curacy in high Q measurements. serial prefix or number of an instrument is
lower than that on title page of this manual,
l-6. High stability of the Q voltmeter vir- see Section VII Manual Changes.
tually eliminates the need for Q-zero adjust-
ments in routine measurements. Troublesome 1-12. For information concerning a serial
zero settings prior to each adjustment are number prefix that is not listed on the title
thus eliminated, ensuring simple and rapid op- page or in the Manual Changes supplement,
eration. Accurate determination of Q changes contact your nearest Hewlett-Packard office.
l-2
Model 4342A
Section I
Paragraphs l-13 to l-22
1-13. SPECIFICATIONS. 16014A Series Loss Test Adapter:
1-14. Complete specifications of the Model The 16014A Series Loss Test Adapter is
4342A Q Meter are given in Table l-1. These a special terminal adapter designed
specifications are the performance standards for measuring low impedance components,
low-value inductors and resistors, and
or limits against which the instrument is
tested. The test procedures for testing the also high value capacitors. The
instrument to determine if it meets its spe- adapter adds convenience in connecting
cifications are covered in Section V Mainte- components in series with the test
circuit of the 4342A Q Meter. It con-
nance Paragraph 5-9 Performance Checks.
When the 4342A Q Meter is shipped from the sists of a teflon printed-circuit
factory, it meets the specifications listed base on which are mounted binding
in Table l-l. posts to accept the supplemental in-
ductors, and a pair of low-inductance
l-15. ACCESSORIES SUPPLIED. series terminals for the unknown.
16451A Dielectric Test Adapter (4342A-KOl):
1-16. Fuses (HP Part No. 2110-0339 and 2110-
0044), the Operating and Service Manual, and The 16451A Dielectric Test Adapter is
a power cord are furnished with the 4342A. a test fixture for measuring the di-
One of four types of power cords (HP Part No. electric constant or dielectric loss
8120-1703, -0696, -1692 or -1521) is fur- angle (tan 6) of insulating materials.
nished depending on the instrument destin- The 16451A has a pair of precision
ation. All accessories supplied are packed variable electrodes (one side is fixed)
in the instrument carton. which hold the sample and which op-
erate similar to a micrometer to per-
mit direct reading of electrode spac-
l-17. ACCESSORIESAVAIALABLE. ing. This test adapter is directly
attached to 4342A measurement
l-18. Accessories are specially designed terminals.
devices which extend or enhance the measure-
ment capabilities of the 4342A. The follow- Typical performance, characteristics, and ad-
ing accessories are available for use with ditional information regarding these accesso-
the 4342A Q Meter: ries are given in Table l-2.
16470 Series Supplemental Inductors:
A range of 20 inductors (model num-
bers 16471A to 1649OA), which can be
supplied separately or as a set, are 1-19. OPTIONS.
available for use with the 4342A Q
Meter. These inductors are useful as l-20. An option is a standard modification
reference devices when measuring the performed in the instrument to meet a special
RF characteristics of capacitors, re- requirement desired by a user. When an in-
sistors, or insulating materials. For strument model is ordered with an option num-
4342A option 001 instruments, the ber, the corresponding optional parts are
Model 16465A Inductor is additionally installed in/or packaged with instrument at
available. These inductors have three the factory. An Option for obtaining a
terminals including a guard terminal lower measurement frequency range is avail-
for stabilization of measurements. able for installation in the 4342A.
l-21. Option 001.
16462A Auxiliary Capacitor:
The 16462A Auxiliary Capacitor is de- l-22. The 4342A Option 001 covers a lower
signed to extend the Q and L measure- frequency range, 1OkHz to 32MHz, instead of
ment capabilities of the 4342A. It is the standard frequency range of 20kHz to
especially useful when measuring small 70MHz. All specifications that apply to Op-
inductors at low frequencies. tion 001 instruments are given in Table 1-1.
1-3
Section I Model 4342A
Table l-l
Table l-1. Specifications (Sheet 1 of 2).
FREQUENCYCHARACTERISTICS AQ Tolerance:
1
210% of full scale.
Measurement Frequency Range:
22kHz to 70MHz in 7 bands (22 to AQ Resolution:
70kHz, 70 to 220kHz, 220 to 700kHz, Upper scale: 0.1 from 0 to 10,
700 to 2200kHz, 2.2 to 7MHz, 7 to Lower scale: 0.05 from 0 to 3.
22MHz, and 22 to 70MHz).
Frequency Dial Accuracy:
21.5% at 22kHz to 22MHz,
22% at 22MHz to 70MHz, I NDUCTANCEMEASUREMENT
CHARACTERISTICS
-cl% at "L" point on frequency dial.
L Range:
Frequency Dial Resolution: 0.09nH to 1.2H, direct reading for
Approximately 21%. seven specific frequencies as marked
at the frequency dial "L" scale point
Q MEASUREMENT
CHARACTERISTICS and selected by the frequency range
switches.
Q Range:
5 to 1000 in 4 ranges (5 to 30, 20 L Accuracy:
to 100, 50 to 300, and 200 to 1000). ?3% after compensation for residual
inductance (approx. 1OnH).
Q Tolerance: % of indicated value
(at 25'C)
TUNING CAPACITOR CHARACTERISTICS
quency 22kHz - 30MHz 30MHz - 70MHz Capacitance Range:
Main dial capacitor: 25 to 470pF
: Vernier dial capacitor: -5 to +5pF
5 - 300 27% 210%
300 - 600 210% 215% Capacitance Dial Accuracy:
Main dial: *l% or 1pF whichever is
600 - 1000 215% ?20% greater.
Vernier dial: +O.lpF.
Q Resolution:
Upper scale: 1 from 20 to 100, Capacitance Resolution:
Lower scale: 0.5 from 5 to 30. Main dial: 1pF from 25 to 30pF,
2pF from 30 to 200pF,
AQ Range: 5pF from 200 to 470pF.
0 to 100 in 4 ranges, 0 to 3, 0 to Vernier d ial: O.lpF.
10, 0 to 30, 0 to 100.
l-4
Model 4342A Section I
Table l-1
Table 1-l. Specifications (Sheet 2 of 2).
REAR PANEL OUTPUTS OPTION 001:
This option covers a frequency range
Frequency Monitor: of 10kHz to 32MHz. Specifications
17OmVrms min. into SOR. are identical with those of the
standard model except as noted below.
Q Analog Output:
1V +-50mV dc at full scale, propor- Oscillator Frequency Range:
tional to meter deflection, output 1OkHz to 32MHz in 7 bands (10 to
impedance approx. 1kR. 32kHz, 32 to lOOkf-Iz, 100 to 320kHz,
320 to lOOOkHz, 1 to 3.2MHz, 3.2 to
Over Limit Signal Output: IOMHz, and 10 to 32MHz).
Single pole relay contact output,
one side grounded, relay contact Frequency Accuracy:
capacity 0.5.4/15VA. i-1.5% at 1OkHz to 1OMllz.
+_2%at 1OMllz to 32MHz.
Over Limit Display Time: 21% at "L" point on frequency dial.
Switch-selectable, lsec. or
continuous. Q Tolerance: % of indicated value
(at 25'C)
GENERAL
Operating Temperature Range: 1 5 - 300 1 300 - 600 1 600 - 1000 1
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