Equipment information

Tektronix 7B92A Oscilloscope
Manufacturer:
Model:
7B92A
Date:
1978
Category:
Group:
Description:
Dual Time Base Plugin Unit

Information

The 7B92A Dual Time Base unit provides normal, delayed, intensified, and alternate sweep operation for Tektronix 7000-Series Oscilloscopes. Calibrated sweep rates from 0.2 second to 0.5 nanosecond and triggering to 500 megahertz are provided. The 7B92A is intended for use with high-frequency 7000-Series Oscilloscope systems; however, most 7B92A functions are compatible with all 7000-Series Oscilloscopes. Other features include lighted pushbutton switches, compatibility with indicator oscilloscopes having an alphanumeric readout system, and 0 to 9.8 times continuous sweep delay. A VARIABLE control allows continuously variable sweep rates between calibrated steps. Also, when operating in the AUTO MAIN TRIGGERING Mode, a bright base line is displayed in the absence of a trigger signal.

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Service and User Manual
Manual Type:
Service and User Manual
Pages:
167
Size:
67.29 Mbytes (70562466 Bytes)
Language:
english
Revision:
revised
Manual-ID:
070-1751-02
Date:
Quality:
Scanned document, all readable.
Upload date:
24 April 2013
MD5:
c7a6608307653c8bd8f0e2b1fd5419c9
Downloads:
984

Information

TABLE OF CONTENTS Page LIST OF ILLUSTRATIONS ... iii SAFETY SUMMARY ... v SECTION 1 OPERATING INSTRUCTIONS INTRODUCTION ... 1-1 INSTALLATION ... 1-1 FRONT-PANEL CONTROLS, CONNECTORS, AND INDICATORS ... 1-2 Main Triggering Controls ... 1-2 Sweep Controls ... 1-4 Delayed Triggering Controls ... 1-5 Front-Panel Inputs ... 1-5 FUNCTIONAL CHECK ... 1-5 Setup Procedure ... 1-6 Sweep Functions ... 1-6 Triggering Functions ... 1-7 GENERAL OPERATING INFORMATION ... 1-8 Main Triggering ... 1-8 Main Trigger Modes ... 1-8 Main Trigger Coupling ... 1-9 Main Trigger Source ... 1-10 Input Impedance ... 1-10 Trigger Slope ... 1-10 Trigger Level ... 1-10 Selecting Sweep Rates ... 1-12 Time Measurement ... 1-12 Display Modes ... 1-12 Delay Time Multiplier ... 1-13 Delayed Sweep Triggering ... 1-13 SECTION 2 SPECIFICATION ... 2-1 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 Block Diagram Description ... 3-1 Detailed Circuit Description ... 3-1 Main Trigger Generator ... 3-1 Delaying Sweep Generator ... 3-3 Delayed Trigger Generator ... 3-4 Delayed Sweep Generator ... 3-6 Horizontal Logic ... 3-6 Output Amplifier ... 3-7 Readout ... TABLE OF CONTENTS (cont) SECTION 4 MAINTENANCE Page Preventive Maintenance ... 4-1 Cleaning ... 4-1 Visual Inspection ... 4-1 Lubrication ... 4-1 Semiconductor Checks ... 4-2 Adjustment After Repair ... 4-2 Troubleshooting ... 4-3 Troubleshooting Aids ... 4-3 Troubleshooting Equipment ... 4-6 Troubleshooting Techniques ... 4-6 Corrective Maintenance ... 4-8 Obtaining Replacement Parts ... 4-8 Soldering Techniques ... 4-8 Component Removal and Replacement ... 4-9 Adjustment After Repair ... 4-11 Repackaging For Shipment ... 4-11 SECTION 5 PERFORMANCE CHECK/CALIBRATION Preliminary Information ... 5-1 Test Equipment Required ... 5-1 Part I Performance Check ... 5-4 Outline for Part I Performance Check ... 5-6 A. Trigger Sensitivity ... 5-4 B. Horizontal System ... 5-4 Preliminary Procedure ... 5-4 A. Trigger Sensitivity ... 5-5 B. Horizontal System ... 5-10 Part II Calibration ... 5-16 Outline for Part II Calibration ... 5-16 A. Trigger Sensitivity (SN B070000-above) ... 5-16 B. Trigger Sensitivity (SN B069999-below) ... 5-16 C. Horizontal System ... 5-17 Preliminary Procedure ... 5-17 A. Trigger Sensitivity (SN B070000-above) ... 5-18 B. Trigger Sensitivity (SN B069999-below) ... 5-25 C. Horizontal System ... 5-33 SECTION 6 OPTIONS SECTION 7 REPLACEABLE ELECTRICAL PARTS SECTION 8 DIAGRAMS AND CIRCUIT BOARD ILLUSTRATIONS SECTION 9 REPLACEABLE MECHANICAL PARTS Change Information

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