Service Manuals, User Guides, Schematic Diagrams or docs for : Tektronix SW503
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GENERATaR
IIVSTFILICTION MAIti1L1AL
SW 503
TABLE OF CONTENTS
Section 1 DESCRIPTION Page
1 .1 INTRODUCTION 1-1
1 .2 ELECTRICAL CHARACTERISTICS 1-1
1 .3 ENVIRONMENTAL CHARACTERISTICS 1-2
Section 2 OPERATION
2.1 FRONT PANEL CONTROLS AND CONNECTORS 2-1
2.2 OPERATING INSTRUCTIONS AND NOTES 2-4
2.2 .1 General Setup and First-Time Operation 2-4
2.2 .2 Cable Connections 2-5
2.2 .3 Impedance Matching 2-5
2.2 .4 Detecting (Demodulating) 2-5
2.2 .5 Sweep Rate Effects 2-6
2.2 .6 Overloading Effects 2-6
2.2 .7 Low-Level Measurements 2-6
2.2 .8 TV Receiver Interference 2-6
2.2 .9 Use with Digital Counter 2-6
2.2 .10 Operation with X-Y Plotters 2-6
2.3 EXTERNAL CONTROL 2-7
2.3 .1 Frequency Control 2-7
2.3 .2 Amplitude Control 2-7
2 .3 .3 Trigger Control 2-7
WARNING
The remainder of this table of contents refers to servicing instructions which should be performed by
qualified personnel only .
Section 3 CALIBRATION
3.1 INTRODUCTION 3-1
3.2 EQUIPMENT REQUIRED 3-1
3.3 PRELIMINARY STEPS 3-2
3.4 PROCEDURE 3-2
Section 4 CIRCUIT DESCRIPTION
4.1 GENERAL 4-1
4.2 SWEEP RAMP GENERATOR 4-1
4 .2 .1 Basic Operation 4-1
4.2 .2 Ramp Generator 4-2
4.2 .3 Single Sweep 4-2
4.2 .4 Line Rate 4-3
4.2 .5 CW Mode 4-3
4.2 .6 MANuaI Mode 4-3
SW 503
TABLE OF CONTENTS (cont)
Section 4 CIRCUIT DESCRIPTION (cont) Page
4.3 SWEEP DRIVE CIRCUITRY 4-3
4.3 .1 Input Adder 4-3
4.3 .2 Ramp Shading Network 4-3
4.3 .3
4.3 .3 Output Amplifier 4-5
4.4 SWEEP OSCILLATOR MODULE 4-5
4.5 RF OSCILLATOR MODULE 4-5
4.6 HARMONIC MARKER MODULE 4-7
4.7 MARKER AMPLIFIER 4-7
4.8 COUNTER INTERFACE 4-9
Section 5 IMPLEMENTING SPECIAL FEATURES
5.1 CHANGING HORIZONTAL OUTPUT VOLTAGE 5-1
5.2 INTERFACE THROUGH REAR CONNECTOR 5-1
5.2 .1 Introduction 5-1
5.2 .2 Mainframe Modification 5-1
5.2 .3 Vertical Output and Horizontal Output 5-1
5.2 .4 External Frequency Control or Modulation 5-2
5.2 .5 External Amplitude Control or Modulation 5-2
5.2 .6 External Trigger 5-2
5.2 .7 Digital Counter Interface 5-3
Section 6 REPLACEABLE ELECTRICAL PARTS
OPTIONS
Section 7 DIAGRAMS AND CIRCUIT BOARD ILLUSTRATIONS
Section 8 REPLACEABLE MECHANICAL PARTS
CHANGE INFORMATION
SW 503
LIST OF ILLUSTRATIONS
Page
Figure 1-1 SW 503 RF Sweep Generator Frontis
Figure 2-1 SW 503 Front Panel 2-2
Figure 2-2 Typical operating setup . 2-4
Figure 2-3 Typical resistive pads . 2-5
Figure 2-4 Basic detector schematic diagram . 2-5
Figure 2-5 Errors from sweep rate effects. 2-6
Figure 2-6 Markers selection switch location . 2-6
Figure 2-7 External control of frequency. 2-7
Figure 2-8 External control of amplitude. 2-7
Figure 3-1 SW 503 rear view . 3-2
Figure 3-2 SCOPE HORIZ waveform as seen on test oscilloscope . 3-2
Figure 3-3 SW 503 adjustment locations, left side . 3-3
Figure 3-4 SW 503 adjustment and test points locations, right side . 3-4
Figure 3-5 Normal interconnections for calibration . 3-4
Figure 4-1 SW 503 sweep ramp generator (simplified diagram) . 4-2
Figure 4-2 Ramp shaping network. 4-4
Figure 4-3 RF sweep oscillator module block diagram . 4-5
Figure 4-4 Harmonic comb markers block diagram . 4-6
Figure 4-5 Counter interface signals sequence . 4-8
Figure 5-1 Rear plug-in connector P40 interface wiring . 5-2
LIST OF TABLES
Table 5-1 Digital Counter Interface Lines 5-3
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Section 1-SW 503
' DESCRIPTION
1 .1 INTRODUCTION Frequency Sweep
The SW 503 is a TM 500-Series plug-in that provides a Maximum Width: Selectable ; 400 MHz (+10% - 0%)
swept frequency of 1 MHz to 400 MHz with variable sweep
rate, width, and output level. Crystal-controlled harmonic
oscillators provide comb markers with 1 MHz, 10 MHz, or
Variable : Permits reducing sweep width from maximum
50 MHz separation . When used with a DC 502 Option 7 dca+aose tt3 ag◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo