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Tektronix TR 503 Generator
Manufacturer:
Model:
TR 503
Date:
1980
Class:
Type:
SubType:
Tracking Generator
Information
The TR 503 may be used to measure the frequency response of a device or component over a 100 kHz to 1.8 GHz range. It is used in conjunction with a TM 500 mainframe and a 492 Spectrum Analyzer. The tracking generator/spectrum Analyzer method of response measurement has intrinsically greater rejection of device or environmental noise than the alternate swept sine-wave method. The greater noise rejection is gained by having the 492 Spectrum Analyzer track the TR 503 output. Noise rejection is improved as the Resolution Bandwidth of the 492 is decreased; this is due to the 492 being immune to noise outside of the VR (Variable Resolution IF) bandwidth. The TR 503 uses the 1st and 2nd LO (local oscillator) outputs of the 492 to generate a frequency that tracks the input of the 492. The TRACKING ADJUST control of the TR 503 allows fine adjustment of this frequency. Points on the 492 display may have their frequencies measured by adding a frequency Counter, such as the DC 508, to the TR 503.492 system. Measurements may be made directly from an external rf spectrum or obtained from the response curve of a device under test.

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Service and User Manual
Manual type:
Service and User Manual
Pages:
71
Size:
6.08 Mbytes (6370353 Bytes)
Language:
english
Revision:
Manual-ID:
070-3526-00
Date:
01 August 1980
Quality:
Scanned document, all readable.
Upload date:
26 December 2017
MD5:
75591cb8d6acfc930f25717721d5fc6d
Downloads:
137
Information
LIST OF ILLUSTRATIONS ... iii OPERATORS SAFETY SUMMARY ... iv SERVICING SAFETY SUMMARY ... v Section 1 GENERAL INFORMATION AND SPECIFICATIONS Introduction ... 1-1 Overview ... 7 ... 1-1 Standards ... 1-2 Electrical Characteristics ... 1-2 Environmental Characteristics ... 1-3 Physical Characteristics ... 1-3 Accessories ... 1-3 Section 2 OPERATING INSTRUCTIONS Introduction ... 2-1 About the Tracking Generator ... 2-1 Installation ... 2-1 Repackaging ... 2-1 Functions of the Controls and Connectors ... 2-1 Operators Checkout Procedure ... 2-2 Check Flatness ... 2-3 Check Output Level ... 2-4 Tracking Adjustment ... 2-4 Measuring Frequency ... 2-4 WARNING THE FOLLOWING SERVICING INSTRUCTIONS ARE FOR USE BY QUALIFIED PERSONNEL ONLY. TO AVOID PERSONAL INJURY, DO NOT PERFORM ANY SERVICING OTHER THAN THAT CONTAINED IN OPERATING INSTRUCTIONS UNLESS YOU ARE QUALIFIED TO DO SO. Section 3 THEORY OF OPERATION General Description ... 3-1 Block Diagram Description ... 3-3 Detailed Circuit Description ... 3-3 RF and Microwave Circuits ... 3-3 Section 3 THEORY OF OPERATION (cont) Bias and Leveling Loop Circuitry . . 3-3 Phase Lock Loop ... 3-4 Power supply Regulators ... 3-5 Section 4 CALIBRATION Introduction ... 4-1 History Information ... 4-1 Equipment Required ... 4-1 PERFORMANCE CHECK ... 4-2 Introduction ... 4-2 Preliminary Inspection ... 4-2 Performance Verification ... 4-2 Check Frequency Range ... 4-2 Check Output Level ... 4-2 Check Flatness ... 4-2 Check Auxiliary Output Level ... 4-3 Check for Spurious Signals ... 4-3 ADJUSTMENT PROCEDURE ... 4-4 Introduction ... 4-4 Complete or Partial Calibration ... 4-4 Test Points ... 4-4 Preliminary Preparation ... 4-4 55 MHz Oscillator Mode Adjust . . . 4-4 Adjust the Normalizing Attenuator . 4-5 Output Level Calibration ... 4-6 Section 5 MAINTENANCE Introduction ... 5-1 Static-Sensitive Components ... 5-1 Preventive Maintenance ... 5-1 Cleaning ... 5-2 Exterior ... 5-2 Interior ... 5-2 Lubrication ... 5-2 Visual Inspection ... 5-2 Transistor and Integrated Circuit Checks ... 5-2 Performance Checks and Recalibration ... 5-2 Troubleshooting ... 5-2 Section 5 MAINTENANCE (cont) Page Section 5 MAINTENANCE (cont) TABLE OF CONTENTS (cont) Troubleshooting Aids ... 5-2 Diagrams ... 5-2 Circuit Board Illustrations ... 5-3 Wiring Color Code ... 5-3 Multiple Terminal (Harmonica) Connectors ... 5-3 Resistor Values ... 5-3 Capacitor Marking ... 5-3 Diode Color Code ... 5-4 Transistor and Integrated Circuit Pin Configuration ... 5-4 Diode Checks ... 5-4 General Troubleshooting Technique 5-5 Corrective Maintenance ... 5-6 Obtaining Replacement Parts ... 5-6 Parts Repair and Replacement Program ... 5-6 Soldering Technique ... 5-6 Replacing the Square Pin for the Multi-pin Connectors ... 5-6 Selected Components ... 5-6 Replacing Assemblies ... 5-7 Removing or Replacing Semi-rigid Coaxial Cables ... 5-7 Replacement of Microwave Assemblies ... 5-7 Separating the TR 503 ... 5-7 Removing the Assembly ... 5-7 Replacing the 2.182 GHz Four Cavity Filter/Mixer Assembly ... 5-8 Remove and Replace the Filter Assembly ... 5-8 Filter Alignment Procedure ... 5-8 Section 6 REPLACEABLE ELECTRICAL PARTS Section 7 DIAGRAMS AND CIRCUIT BOARD ILLUSTRATIONS Section 8 REPLACEABLE MECHANICAL PARTS CHANGE INFORMATION

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