Keithley 2700 Service Manual

2 Calibration
Introduction ................................................................................ 2-2
Environmental conditions ........................................................... 2-2
Warm-up period ................................................................... 2-2
Line power ........................................................................... 2-2
Calibration considerations .......................................................... 2-3
Calibration code .......................................................................... 2-4
Front panel calibration code ................................................ 2-4
Remote calibration code ...................................................... 2-4
Comprehensive calibration ......................................................... 2-5
Calibration cycle .................................................................. 2-5
Recommended equipment ................................................... 2-5
Aborting calibration ............................................................ 2-6
Front panel calibration ........................................................ 2-6
Remote calibration ............................................................ 2-13
Manufacturing calibration ........................................................ 2-18
Recommended test equipment .......................................... 2-18
Extender board preparation ............................................... 2-19
Unlocking manufacturing calibration ................................ 2-19
Measuring function generator signal amplitude ................ 2-19
Front panel manufacturing calibration .............................. 2-20
Remote manufacturing calibration .................................... 2-21
Model 7700 calibration ............................................................. 2-22
Recommended test equipment .......................................... 2-22
Extender board connections .............................................. 2-22
Model 7700 calibration ..................................................... 2-22
3 Routine Maintenance
Introduction ................................................................................ 3-2
Setting the line voltage and replacing the line fuse .................... 3-2
Replacing the front terminal AMPS fuse .................................... 3-4
Replacing plug-in module amps fuses ........................................ 3-5
Replacing Model 7700 amps fuses ...................................... 3-5
Replacing Model 7702 amps fuses ...................................... 3-6
Replacing non-volatile RAM battery ......................................... 3-8

Keithley 2700 Specifications

General

Type	Digital Multimeter
Measurement Functions	DC Voltage, AC Voltage, DC Current, AC Current, Resistance, Frequency, Temperature
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
Frequency Range	3 Hz to 500 kHz
Temperature Range	-200°C to +1372°C
Display	Vacuum Fluorescent Display
Connectivity	IEEE-488, RS-232
Channels	10
Power Supply	100V to 240V AC, 45Hz to 66Hz
DC Current Range	10 µA to 3 A
AC Current Range	10 µA to 3 A
Temperature Measurement	Thermocouple, RTD