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Keithley 2700 Service Manual

Keithley 2700
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Routine Maintenance 3-5
Replacing plug-in module amps fuses
NOTE The following procedures apply only to the Model 7700 and 7702 plug-in modules.
WARNING The information in this section is intended only for qualified service per-
sonnel. Do not perform these procedures unless you are qualified to do so.
Make sure that all plug-in module connections are de-energized and dis-
connected before replacing module amps fuses.
Replacing Model 7700 amps fuses
1. Turn off the power, and disconnect the power line and external connections from the
Model 7700.
2. Open the Model 7700 top cover.
3. Locate the amps fuses for CH21 and CH22 (see Figure 3-3).
4. Remove the circuit board from the bottom plastic housing by removing the two bottom
screws.
Figure 3-3
Model 7700 amps fuses
HLHL
AMPS
HLHLHLHLHLHL
LO
CH21 CH22 CH11 CH12 CH13 CH14 CH15 CH16
HLHLHLHL
CH17 CH18 CH19 CH20
SENSE
(OHMS, 4 WIRE)
INPUT
(V, 2 WIRE)
HLHLHLHL
CH7 CH8 CH9 CH10
CH22 Fuse
CH21 Fuse
Model 7700
HLHL
HLHL
HLHL
HLHL
INPUT SENSE
CH1
CH2
CH3
CH4
CH5
CH6

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Keithley 2700 Specifications

General IconGeneral
TypeDigital Multimeter
Measurement FunctionsDC Voltage, AC Voltage, DC Current, AC Current, Resistance, Frequency, Temperature
DC Voltage Range100 mV to 1000 V
AC Voltage Range100 mV to 750 V
Frequency Range3 Hz to 500 kHz
Temperature Range-200°C to +1372°C
DisplayVacuum Fluorescent Display
ConnectivityIEEE-488, RS-232
Channels10
Power Supply100V to 240V AC, 45Hz to 66Hz
DC Current Range10 µA to 3 A
AC Current Range10 µA to 3 A
Temperature MeasurementThermocouple, RTD

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