Keithley 1801 Ander
Fabrikant:
Model:
1801
Datum:
1993
Categorie:
Groep:
Omschrijving:
Nanovolt Preamp
Service-en gebruikershandleiding
Handleidingen type:
Service-en gebruikershandleiding
Pagina’s:
93
Grootte:
2.11 Mbytes (2211697 Bytes)
Taal:
english
Herziening:
Third printing
Handleidingen-ID:
1801-901-01
Datum:
Kwaliteit:
Elektronisch document, geen scan, zeer goed leesbaar.
Upload datum:
2012 05 20
MD5:
7b1ec535ac0216aede003ebb7e8b1c31
Downloads:
871

Informatie

1 General Information 1.1 Introduction ... 1-1 1.2 Features ... 1-1 1.3 Warranty information ... 1-1 1.4 Manual addenda ... 1-2 1.5 Safety symbols and terms ... 1-2 1.6 Specifications ... 1-2 1.7 Unpacking and inspection ... 1-2 1.7.1 Inspection for damage ... 1-2 1.7.2 Shipment contents ... 1-2 1.7.3 Instruction manual ... 1-2 1.8 Repacking for shipment ... 1-2 1.9 Model 2001 compatibility ... 1-3 1.10 Optional Accessories ... 1-3 2 Installation 2.1 Introduction ... 2-1 2.2 Card configuration ... 2-2 2.2.1 Preamplifier module ... 2-2 2.2.2 Power supply card ... 2-3 2.3 Power supply card preparation ... 2-4 2.4 Power supply card installation and removal ... 2-5 2.4.1 Card installation ... 2-5 2.4.2 Card removal ... 2-5 2.5 Connections ... 2-6 2.5.1 Power supply connections ... 2-6 2.5.2 Output connections to multimeter ... 2-7 2.5.3 Input signal connections ... 2-7 2.6 Operating considerations ... 2-9 2.6.1 Using the thermal isolation container ... 2-9 2.6.2 Minimum operating distance ... 2-9 3 Operation 3.1 Introduction ... 3-1 3.2 Preamplifier operation ... 3-1 3.2.1 Power-up detection ... 3-1 3.2.2 Preamplifier configuration menu ... 3-2 3.2.3 Enabling Model 1801 operation ... 3-2 3.2.4 Preamp ON/OFF states ... 3-2 3.2.5 Preamplifier filtering ... 3-4 3.2.6 Operational differences ... 3-5 3.2.7 IEEE-488 bus operation ... 3-7 3.3 Measurements ... 3-7 3.3.1 DC voltage measurements ... 3-7 3.3.2 AC voltage measurements ... 3-9 3.3.3 Four-wire resistance measurements ... 3-11 3.3.4 Frequency measurements ... 3-11 3.3.5 Differential thermocouple temperature measurements ... 3-14 3.4 Measurement considerations ... 3-18 3.4.1 Thermoelectric potentials ... 3-18 3.4.2 Source resistance noise ... 3-20 3.4.3 Magnetic fields ... 3-21 3.4.4 Electromagnetic interference (EMI) ... 3-22 3.4.5 Ground loops ... 3-22 3.4.6 Shielding ... 3-22 4 Performance Verification 4.1 Introduction ... 4-1 4.2 Environmental conditions ... 4-1 4.3 Warm-up period ... 4-2 4.4 Line power ... 4-2 4.5 Recommended test equipment ... 4-2 4.6 Verification limits ... 4-2 4.7 Restoring default conditions ... 4-3 4.8 Verification procedures ... 4-3 4.8.1 DC volts verification ... 4-3 4.8.2 AC volts verification ... 4-6 4.8.3 Resistance verification ... 4-6 5 Service Information 5.1 Introduction ... 5-1 5.2 Calibration ... 5-1 5.2.1 Environmental conditions ... 5-1 5.2.2 Warm-up period ... 5-1 5.2.3 Line power ... 5-2 5.2.4 Recommended calibration equipment ... 5-2 5.2.5 Offset adjustments ... 5-2 5.2.6 Normal calibration ... 5-4 5.2.7 Gain constants calibration ... 5-9 5.3 Principles of operation ... 5-10 5.3.1 Block diagram ... 5-10 5.3.2 Preamplifier module ... 5-10 5.3.3 Power supply cable ... 5-10 5.3.4 Power supply card ... 5-10 5.4 Special handling of static-sensitive devices ... 5-12 5.5 Troubleshooting ... 5-12 5.5.1 Troubleshooting equipment ... 5-12 5.5.2 Troubleshooting access ... 5-12 5.5.3 Troubleshooting procedure ... 5-12 6 Replaceable Parts 6.1 Introduction ... 6-1 6.2 Parts lists ... 6-1 6.3 Ordering information ... 6-1 6.4 Factory service ... 6-1 6.5 Component layouts and schematic diagrams ... 6-1 A Specifications B Calibration Programs Introduction ... B-1 Program requirements ... B-1 General program instructions ... B-1 C IEEE-488 Bus Command Summary

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