HP-1707B-Manual 电路图.pdf

I . : HP Archive . . This vintage Hewlett Packard document was preserved and distributed by www. Please visit us on the web ! . . On-line curator: Tony Gerbic RadioFans.CN 收音机爱 好者资料库 m r - 0 b F P O P E R A T I N G A N D S E R V I C E M A N U A L OSCILLOSCOPE 1707B - - _ - - HEWLETT PACKARD RadioFans.CN 收音机爱 好者资料库 . OPERATING AND SERVICE MANUAL MODEL 1707B OSCILLOSCOPE 4 SERIALS PREFIXED: 1410A Refer to Section VI1 for instruments with the following standard options: 002,007,011,012,015,602,607,611 and 631. H EWLETT-PAC KA R D COMPANY/COLO RA DO SPRINGS DIV IS1 O N 1900 GARDEN OF THE GODS ROAD, COLORADO SPRINGS, COLORADO, U.S.A. Manual Part Number 01707-90916 Microfiche Number 01 707-908 16 PRINTED: APRIL 1974 RadioFans.CN 收音机爱 好者资料库 SAFETY SUMMARY The following general safety precautions must be observed during all phases of operation, service, and repair of this instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. Hewlett- Packard Company assumes no liability for the customers failure to comply with these requirements. GROUND THE INSTRUMENT. To minimize shock hazard, the instrument chassis and cabinet must be connected to an electrical ground. The instrument is equipped with a three-conductor ac power cable. The power cable must either be plugged into an approved three-contact electrical outlet or used with a three- contact to two-contact adapter with the grounding wire (green) firmly connected to an elmtrical ground (safety ground) at the power outlet. The power jack and mating plug of the-power cable meet International Electrotechnical Commission (IEC) safety standards. DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE. Do not operate the instrument in the presence of flammable gases or fumes. Operation of any electrical instrument in such an environment constitutes a definite safety hazard. KEEP AWAY FROM LIVE CIRCUITS. Operating personnel must not remove instrument covers. Component replacement and internal adjustments must be made by qualified maintenance personnel. Do not replace components with power ca ble connected. Under certain conditions, dangerous voltages may exist even with the power cable removed. To avoid injuries, always disconnect power and discharge circuits before touching them. DO NOT SERVICE OR ADJUST ALONE. Do not attempt internal service or adjustment unless another person, capable of rendering first aid and resuscitation, is present. USE CAUTION WHEN EXPOSING OR HANDLING THE CRT. Breakage of the cathode-ray tube (CRT) causes a high-velocity scattering of glass fragments (implosion). To prevent CRT implosion, avoid rough handling or jarring of the instrument. Handling of the CRT shall be done only by qualified maintenance personnel using approved safety mask and gloves. DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT. Because of the danger of introducing additional hazards, do not install substitute parts or perform any un- authorized modification to the instrument. Return the instrument to a Hewlett-Packard Sales and Service Office for service and repair to ensure that safety features are maintained. DANGEROUS PROCEDURE WARNINGS. Warnings, such as the example below, precede potentially dangerous procedures throughout this manual. Instructions contained in the warnings must be followed. Dangerous voltages, capable of causing death, are present in this instrumezt. Use extreme caution when handling, testing, and adjusting. I Model 1707H TABLE OF CONTENTS J I I Section Page I GENERAL INFORMATION . 1-1 1.1 . 1.4 . 1.5 . 1.7 . 1-1 1 . 1.17 . 1.20 . 1.22 . 1.24 . 1.26 . 1.30 . Introduction . 1-1 Description . 1 . 1 Introduction . 1-1 Vertical Circuits . 1-1 Horizontal Circuits . 1-1 Cathode-ray Tube . 1-5 Warranty . 1-5 Accessories Furnished . 1-5 Accessories Available . 1-5 Instrument and Manual Identification . 1-5 Inquiries . 1-5 I1 INSTALLATION . 2-1 2.1 . 2.3 . 2.6 . 2.7 . 2-1 1 . 2.13 . 2- 15 . 2.17 . 2.19 . Introduction . 2-1 Initial Inspection . 2-1 Preparation for Use . 2-1 Power Requirements . 2-1 Three-conductor AC Power Cable . 2-1 DC Plug . 2-2 Battery Installation . 2-2 Claims . 2-2 Repacking for Shipment . 2-2 I11 OPERATION . 3-1 3.1 . Introduction . 3-1 3.3 . Controls and Connectors . 3-1 3.5 . Beam Finder . 3-1 3.7 . Scale Illumination . 3-1 3.9 . Trace Align . 3-1 3.11 . Calibrator . 3-1 3.13 . Focus and Astigmatism . 3-1 3.15 . Coupling . 3-1 3.17 . Display . 3-4 3.24 . Trig . 3-4 3.26 . B Polarity . 3-4 3.28 . Sweep Display . 3-4 3.30 . Ext Horiz Input . 3-4 3.32 . Main Sweep . 3-4 3.34 . Mixed Sweep . 3-4 3.36 . Delayed Sweep . 3-4 3.38 . Time/Div . 3-4 3.40 . Vernier . 3-4 3.42 . Trigger Level . 3-4 3.44 . Trigger Holdoff 3-4 3.46 . Slope . 3.4 . Section Page 3.48 . 3.51 . 3.54 . 3.56 . 3.58 . 3.59 . 3.61 . 3.63 . 3.65 . 3.67 . 3.69 . 3.71 . 3.73 . 3.75 . 3.77 . 3.80 . Sweep Mode . 3-5 Trigger Selection . 3-5 Magnetic Interference . 3-5 Battery Recharge Operation . 3-5 Preoperational Adjustments . 3-5 Initial Turn.on . 3-5 Focus and Astigmatism Adjust . 3-6 Operating Procedures . 3-6 Operators Performance Check . 3-6 Operating Information . 3-7 Auto Versus Norm . 3-7 Auto Versus Trig . 3-7 AC Versus DC . 3-7 Mixed Sweep . 3-7 Delayed Sweep . 3-7 Line Sync . 3-7 IV PRINC111,ES OF OPERATION . 4-1 4.1 . 4.3 . 4.6 . 4 . 8 . 4- 10 . 4-12 4.14 . 4- 16 . 4.21 . 4.24 . 4.27 . Introduction . 4-1 Block Diagram Discussion . 4-1 Input Attenuator . 4-1 Vertical Ircamplifier . 4-1 1)cllay I.ine . 4-1 Vertical Output Amplifier . 4-1 Trigger Circuits . 4-1 M ai n In t egr a t o r . 4 . 1 Holdoff and Comparator . 4-2 I )el ay ed Integra tor . 4-2 liming Sequence . 4-;3 4.31 . Horizontal Mode Assembly . . . . 4-:3 1 -; 3 5 . 4.41 . 4.44 . 4.46 . 4.48 . 4.53 . 4.79 . 4.81 . 4.86 . 4.104 . 4-1 19 . 4.124 . 4- 130 . 4.148 . 4.156 . 4.158 . 4.162 . 4.165 . 4.174 . I. ow Voltage Power Supply . . . . 4-;j High Voltage Power Supply . 4-3 Gate Amplifitr . . . . . . . . . . . . . . . . 4-4 Detailed Circuit Theory . 4-4 Input Attenuators . 4-4 Vertical Preamplifier . 4-4 Delay Line . 4-6 Vertical Output Amplifier . 4-6 Trigger Circuits . 4-6 Main Integrator . 4-8 Holdoff and Comparator . 4-10 Delayed Integrator . 4-10 Horizontal Mode . 4-11 Gate Assembly . 4-13 Calibrator . 4-14 Horizontal Preamplifier and Output Assemblies . 4-14 Indicator Drivers . 4-14 Low Voltage Power Supply . 4-14 High Voltage Power Supply . 4-16 111 Table of Contents Model 1707B TABLE OF CONTENTS (Contd) Section Page V PERFORMANCE: CHECK AND A1)JUSIME:NTS . 5-1 5.1 . 5.3 . 5.5 . 5.8 . 5.10 . 5- 12 . 5.13 . 5.18 . 5.23 . 5.28 . 5.33 . 5.38 . 5.43 . 5.48 . 5.53 . 5.58 . 5.63 . 5.68 . 5.73 . 5-78 . 5.83 . 5.88 . 5.93 . 5.98 . 5.103 . 5.108 . 5-113 . 5.118 . 5.123 . 5.128 . 5-133 . 5.138 . 5.142 . 5.143 . 5.148 . 5.153 . 5.157 . 5.162 . 5.167 . 5.172 . 5.177 . 5.181 . 5- 185 . Introduction . 5-1 Test Equipment . 5-1 Performance Check . 5-1 Front-panel Adjustments . 5- 1 Front-panel Settings . 5-1 Performance Tests . 5-1 Deflection Factor . 5-1 Rise time . 5-2 Handwidth . 5-3 A+B Mode . 5-3 Alt Mode . 5-4 Chop Mode . 5-4 Single Sweep . 55 Auto Trig Recovery Time . 5-5 Z Axis Sensitivity . 56 Beam Finder . 5-6 Coupling Switch . 5-6 Input Resistance . 5-7 Common Rejection Ratio (CMRR) . 5-8 Main Sweep Time . 5-8 Delay Time Accuracy . 5-10 Delay Time Linearity . 511 Delay Jitter . 5-12 Main Triggering . 5-13 Delayed Triggering . 5-14 Main Trigger Level Range and Polarity . 5-15 Delayed Trigger Level Range and Polarity . 5-16 Ext Horizontal Bandwidth . 5-16 Ext Horizontal Deflection Factor . 5-17 Calibrator . 5-17 Adjustments . 5-19 Adjust Procedures . 5-19 Adjustment . 5-19 Adjustment . 5-19 Y-Axis Alignment . 520 Adjustment . 5-20 DC Adjustment . 5-21 Trigger Sensitivity . 5-21 Sweep Length Adjustment . 5-22 Adjustment . 523 Delayed Sweep Time . 5-9 Low Voltage Power Supply High Voltage Power Supply Intensity Limit Adjustment . 5-20 Gate Amplifier Response Trigger Amplifier Balance and Position Centering Adjustment . 5-22 Main Sweep Timing Section Page 5.190 . 5.195 . 5.200 . 5.205 . 5.210 . 5-2 15 . 5.220 . 5.225 . 5.230 . Delayed Sweep Time Adjustment . 5-23 X10 Gain Adjustment . 524 Mag Centering Adjustment . 524 Calibrator Adjustment . 5-25 Ext Horiz Gain Adjust . 5-26 Adj . 5.26 Ext Horiz Input Compensation . 5-25 Low-frequency Pulse Response Input Capacitance and Attenuator High-frequency Pulse Compensation Adjustment . . 5-26 Response Adj . 5-27 VI REPI.ACEAH1. E PARTS . 6-1 6.1 . Introduction . 6-1 6.3 . Ordering Information . 6-1 VI1 MAZNUAI. CHANGES AN!) OPIIONS . 7-1 7.1 . Introduction . 7-1 7.3 . Manual Changes . 7-1 7.5 . Special Options . . . . . . . . . . . . . . . . . . . 7-1 7.9 . Standard Options . 7-1 VI11 SCHEMATICS ANI) TROUH1.E: . SHOOTING . 8-1 8.1 . 8.3 . 8.8 . 8- 12 . 8- 1.5 . 8- 17 . 8.22 . 8.27 . 8.29 . 8-:3 1 . 8.n . 8.35 . 8437 . 8.42 . 8.44 . 8.46 . 8.48 . Introduction . 8-1 Schematics . 8-1 Reference Designations . 8-1 Component I. ocations . 8-1 Preventive Maintenance . 8-1 Mechanical Inspection . 8-1 Switch Maintenance . . . . . . . . . . 8-2 Repair and Replacement . . . . . . . . . . 8-2 CRT Removal and Replace- ment . 8-2 Vertical Amplifier Module Removal and Replacement . . 8-3 Delay line Removal and Replacement . 8-3 Attenuator Removal and Replacement . . . . . . . . . . . . . . . . 8-3 Removal and Replacement of Assemblies in Horizontal Amplifier Module . . . . . . . . . . . 8-5 Power S u p p 1 y Mod u 1 e Removal and Replacement 8-5 Power Supply Module IXs- assembly and Reassembly . . 8-5 Semiconductor Removal and Replacement . . . . . . . . . . . . . . . . 8-6 At t e n u a t o r Ser vi c i n g . . . . . . . . . . 8-6 iv Model 1707B TABLE OF CONTENTS (Contd) Table of Contents List of Illustrations ) Section Page Section Page 8.50 . Circuit Hoards . 8.52 . Hoard Connect ions . 8-6 8-6 8.62 . Soldering Tool. Solder. and Aids . 8-7 8.64 . Heat Sink Removal . 8.8 8.66 . Troubleshooting . 8.8 8.69 . DC Voltages . 8.8 Waveforms . 8.8 . Test Points . 8.8 8.60 . Service Kit . 8.7 8.75 . Circuit Checking . 8.9 8.54 . Servicing Etched Circuit Hoards . 8.6 8.56 . Integrated Circuit Replace- 8-7 1 . ment 8.6 8.73 . LIST OF ILLUSTRATIONS Figure Title Page Figure Title Page . . 1.1 Model 1707R Oscilloscope 1-0 5.12 . Main Triggering Test Setup . 5.13 5.13 . 5.14 . 5.15 . Delayed Triggering Test Setup . 5.14 Main Trigger Level Range and Polarity Delayed Trigger Level Range and 1.2 . Instrument Serial Number . 1-5 1.3 . Service Kit for HP 1700-series Test Setup . 5.15 2.1 . Rear Panel Power Module . 2-1 Polarity Test Setup . 5-16 1-6 Oscilloscopes . . . 2.2 Battery Pack Installation 2-2 5-16 . EXT Horizontal Bandwidth Test Setup . 5.17 . 3.1 . Controls and Connectors 3-2 Sweep Combinations . 3-5 517 . EXT Horizontal Deflection Factor 3.2 . 1 3.3 . DC BAL Adjust . 3-8 Test Setup . 5.17 3.4 . CALAdjust . 3-9 Operation . 3-10 Delayed Sweep . 3-11 Mixed Sweep . 3-12 3.5 . 3.6 . 3.7 . Algebraic Addition and Differential 4.1 . 4.2 . Timing Sequence . 4-2 Gate Schmitt Trigger . 4-7 Step-by-step operation of the 518 . 5-19 . 6-1 . 6-2 . 8.1 . 8.2 . 8.3 . 8.4 . Calibrator Test Setup . 5.18 Adjustment . 529 Knob Locator . 6-2 Mechanical Parts Locator . 6-3 Vertical Module Mechanical Parts Removal . 8-4 Attenuator Removal . 8-4 Semiconductor Terminal Identification . . 8-7 Component Identification. Interior Front and rear Panel . 8-23 8.5 . Component and Assembly Locations . 8-23 8.6 . Identification . 8-24 4.3 . reset Multivibrator 4-9 4.4 . Blanking Sequence . 4-12 Step-by-step operation of the Set- .