Equipment information

Keithley 175-AV Amplifier
Manufacturer:
Model:
175-AV
Date:
1999
Category:
Group:
Description:

Information

The Keithley Model 175-AV is a 4-1/2 digit LCD bench/ portable digital multimeter. The Model 175-AV can make the following basic measurements: 1. Dc voltage measurements from 10µV to 1000V. 2. Resistance measurements from 10mΩ to 200MΩ. 3. Ac voltage measurements from 10µV to 750V. 4. Dc current measurements from 10nA to 2A. 5. Ac current measurements from 10nA to 2A. In addition to the above mentioned measurement capabilities, the Model 175-AV can make dc and ac dB voltage measurements. FEATURES Some important Model 175-AV features include: • 4-1/2 digit LCD display • Fast autoranging • Bench or portable • Digital calibration • 100-point data logger • 0.03% basic dcV accuracy • Average responding acV and acA • dBm /Relative functions • Min/Max reading hold • Safety input jacks • 100kHz specified ac bandwidth

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Service and User Manual
Manual Type:
Service and User Manual
Pages:
91
Size:
3.98 Mbytes (4172762 Bytes)
Language:
english
Revision:
C
Manual-ID:
175-AV-901-01
Date:
1999 10 01
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
2020 07 22
MD5:
be06fec73a186c41e63363d73482740e
Downloads:
430

Information

1.1 INTRODUCTION ... 1-1 12. FEATURES ... 1-1 1.3 WARRANTY INFORMATION ... 1-1 1.4 MANUAL ADDENDA ... 1-1 1.5 SAFETY SYMBOLS AND TERMS ... 1-1 1.6 SPECIFICATIONS ... 1-2 1.7 INSPECTION ... 1-2 1.8 USING THE MODEL 175-AV MANUAL ... 1-2 1.9 GETTING STARTED ... 1-2 1.10 ACCESSORIES ... 1-3 SECTION 2 — Bench Operation 2.1 INTRODUCTION ... 2-1 2.2 HIGH ENERGY CIRCUIT SAFETY PRECAUTIONS ... 2-1 2.3 PREPARATION FOR USE ... 2-1 2.3.1 Line Power ... 2-1 2.3.2 Battery Pack Power ... 2-2 2.3.3 Battery Charging ... 2-2 2.4 FRONT PANEL FAMILIARIZATION ... 2-2 2.4.1 Display ... 2-3 2.4.2 Front Panel Controls ... 2-3 2.4.3 Input Terminals ... 2-3 2.4.4 AMPS Fuse Replacement ... 2-3 2.5 ERROR MESSAGES ... 2-4 2.6 OPERATING CONDITIONS ... 24 2.6.1 Environmental Conditions ... 2-4 2.6.2 Maximum Allowable Inputs ... 2-4 2.7 BASIC BENCH MEASUREMENTS ... 2-4 2.7.1 Power-Up ... 2-5 2.72 Relative Mode ... 2-5 2.7.3 Dc Voltage Measurements ... 2-6 2.7.4 Average Ac Voltage Measurements ... ■ 2-6 2.7.5 Resistance Measurements ... 2-7 2.7.6 Current Measurements (dc or average ac) ... 2-7 2.7.7 dB Measurements ... 2-8 2.7.8 dB Measurement Considerations and Applications ... 2-10 2.7.9 MIN/MAX and 100-Point Data Logger Operation ... 2-11 2.7.10 Diode Test ... 2-11 2.8 AVERAGE RESPONDING MEASUREMENTS ... 2-11 2.8.1 Waveform Comparison ... 2-12 2.8.2 Ac Voltage Offset ... 2-14 SECTION 3 — Performance Verification 3.1 INTRODUCTION ... 3-1 32 ENVIRONMENTAL CONDITIONS ... 3-1 3.3 INITIAL CONDITIONS ... 3-1 3.4 RECOMMENDED TEST EQUIPMENT ... 3-1 3.5 VERIFICATION PROCEDURE ... 3-1 3.5.1 Dc Voltage Verification ... * ... * ... 3-1 3.5.2 Average Ac Voltage Verification ... 3-2 3.5.3 Resistance Verification ... 3-3 3.5.4 Dc Current Verification ... • ■ ■ 3-3 3.5.5 Average Ac Current Verification ... 3-3 3.5.6 Diode Test Current Verification ... 3-3 SECTION 4 — Principles of Operation 4.1 INTRODUCTION ... 4-1 4.2 OVERALL FUNCTIONAL DESCRIPTION ... 4rl 4.3 ANALOG CIRCUITRY ... 4-2 4.3.1 Multiplexer ... 4-2 4.3.2 Input Buffer TV Multimedia">Amplifier ... 4-2 4.3.3 -2V Reference Source ... * ... 4-2 4.3.4 A/D TV Multimedia">Converter ... 4-3 4.3.5 Input Signal Conditioning ... 4-4 4.3.6 Ac TV Multimedia">Converter ... ... * ... • ... 4-5 4.4 DIGITAL CIRCUITRY ... 4-5 4.4.1 Microcomputer ... 4-5 4.4.2 Address Decoding ... 4-6 4.4.3 PIA ... 4-6 4.4.4 Display Board ... * - * 4-6 4.5 DIGITAL CALIBRATION ... 4-6 4.6 POWER SUPPLY ... 4-6 4.7 MODEL 1758 BATTERY OPTION ... 4-6 SECTION 5 — Maintenance 5.1 INTRODUCTION ... 5.2 UNE VOLTAGE SELECTION ... 5.3 FUSE REPLACEMENT ... 5.3.1 AMPS Fuse ... 5.3.2 Line Fuse ... 5.4 CALIBRATION ... 5.4.1 Recommended Calibration Equipment 5.4.2 Environmental Conditions ... 5.4.3 Warm-Up Period ... 5.4.4 CALIBRATION Switch ... 5-3 5.4.5 Dc Voltage Calibration From Front Panel ... 5-3 5.4.6 Ac Voltage Calibration From Front Panel ... 5-4 5.4.7 Resistance Calibration From Front Panel ... 5-4 5.4.8 Frequency Compensation ... 5-5 5.4.9 Calibration Storage ... 5-5 5.4.10 IEEE-488 Bus Calibration ... 5-5 5.5 SPECIAL HANDLING OF STATIC SENSITIVE DEVICES ... 5-6 5.6 TROUBLESHOOTING ... 5-6 5.6.1 Recommended Test Equipment ... 5-6 5.6.2 Self Diagnostic Program ... 5-7 5.6.3 Power Supply and Battery Pack (Model 1758) Checks ... 5-11 5.6.4 A/D TV Multimedia">Converter and Display ... 5-11 5.6.5 Signal Conditioning ... 5-11 5.7 MODEL 1758 BATTERY PACK INSTALLATION AND REMOVAL ... 5-13 5.8 BATTERY PACK STORAGE ... 5-13 SECTION 6 — Replaceable Parts 6.1 INTRODUCTION ... 6-1 6.2 PARTS LIST ... 6-1 6.3 ORDERING INFORMATION ... 6-1 6.4 FACTORY SERVICE ... 6-1

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