Equipment information

Hughes Products 105A Oscilloscope
Manufacturer:
Model:
105A
Date:
1961
Category:
Group:
Description:
Memo-Scope

Information

2-1. The Hughes MEMO »SCOPE Oscilloscope, Model 105 A, is an advanced laboratory-type instrument designed to test any type of equipment where performance can be translated into an electrical signal. The instrument is built around the MEMOTRON storage tube, which permits use of the Oscilloscope as a storage-type instrument of long persistence, or as a conventional high-speed Oscilloscope. In the storage mode, the MEMO-SCOPE Oscilloscope affords a visual presentation of all pertinent phenomena related to the equipment under test, including transient traces which are difficult or impossible to measure by other means. Traces remain visible at uniform brightness indefinitely, without fading or blooming, until intentionally erased. Successive writings may be superimposed or shifted in position for convenient comparison. Resolution up to 20 adjacent written lines per inch permits excellent interpretation of complex patterns. Reference lines can easily be stored on the face of the MEMOTRON tube as an aid in making accurate measurements. Traces that exceed the maximum writing speed of 1,000,000 inches per second in the storage mode can be visibly displayed by repeated retracing at repetition rates sufficiently high, to permit cumulative storage. These unusual features simplify test analyses and facilitate initial design of equipment by revealing hidden factors which affect performance. Wide bandwidth permits detailed examination of complex waveforms, A delay network insures presentation of all the incoming signal without loss of leading edges. Precision circuitry throughout the instrument affords a high level of accuracy in making measurements. Power supplies are connected to critical components in a manner providing adequate protection in the event of component failure. The storage circuitry has been designed to minimize the possibility of damage to the storage surface of the MEMOTRON tube in event of accidental operator error. Major circuit boards are mounted on hinged frames, all components are easily reached for servicing. Filtered forced-air cooling prevents overheating of the Oscilloscope. The chassis is all aluminum, with removable vinyl-clad covers. A series of plug«in preamplifiers are available as accessories, as well as the Hughes Multitracer, which permits comparison of a selected number of consecutive sweeps simultaneously.

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Service and User Manual
Manual Type:
Service and User Manual
Pages:
121
Size:
14.32 Mbytes (15012432 Bytes)
Language:
english
Revision:
Manual-ID:
Date:
1961 01 01
Quality:
Scanned document, all readable.
Upload date:
2017 08 18
MD5:
530ba842b4ec207c18230a5902e90f16
Downloads:
554

Information

Instruction Manual SECTION I. SPECIFICATIONS 1 SECTION II. GENERAL DESCRIPTION 4 2-1. MEMO-SCOPE Oscilloscope, Model 105A 4 2-2. MEMOTRON Storage Tube 5 2-3, Front Panel Control & Connectors 6 2-4, Accessories 9 SECTION III, OPERATING INSTRUCTIONS 11 3-1. Introduction 11 3-2, Operation 11 SECTION IV. CIRCUIT DESCRIPTION 21 4-1. Block Diagram 21 4-2. Vertical Deflection System 21 4-3. Horizontal Deflection System 23 4-4, Storage Circuits 30 4-5, Calibrator 31 4-6, Power Supplies 32 SECTION V. MAINTENANCE & SERVICE 37 5-1. Replacement of Components 37 5-2, Soldering 37 5-3, Disassembly 37 5-4, Trouble Shooting 39 5-5, Voltage Measurements 47 SECTION VI. CALIBRATION & ADJUSTMENT 51 6-1, Recalibration Sequence 51 6-2, Calibration Equipment 52 6-3, Preconditions 52 6-4, Low Voltage Power Supply 52 6-5, Horizontal & Vertical Deflection Plate Levels 53 6-6, High Voltage Power Supply 5 3 6-7. Sweep Circuit Adjustments 54 6-8, Calibrator Adjustment 6-9. Horizontal Deflection System 6-10. Multiplier Calibration 6-11. Magnifier Calibration 6-12, Vertical Amplifier Calibration 6-13. Storage Circuit Calibration SECTION VII. PARTS LIST 7-1. Ordering Procedure 7-2. Storage Controls 7-3. Vertical Amplifier 7-4. Horizontal Amplifier 7-5, Trigger Amplifier 7-6. Sweep Generator 7-7« Low Voltage Power Supply 7-8. High Voltage Power Supply 7-9. Calibrator 7-10, Z-Axis Circuit SECTION VIII. SCHEMATIC DIAGRAMS Dwg. No. A-106900 Block Diagram Dwg. No. A-106901 Memotron Storage Controls Dwg. No. A-106902 Vertical Amplifier Dwg. No. A-106903 Horizontal Amplifier Dwg. No, A*106904 Trigger Amplifier Dwg. No. .A-106905 Sweep Generator Dwg, No. A-IO69O6 Low Voltage Power supply Dwg. No. A-106907 High Voltage Power supply Dwg. No. A-106908 Calibrator Dwg. No. A-106909 Z-Axis Circuit Dwg. No. A-106913 • Dual Trace Blanking Circuit

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