Keithley 2750 Service Manual

Model 2750 Multimeter/Switch System Service Manual Troubleshooting 4-13
Troubleshooting
Figure 4-4
Simplified schematic of dry circuit ohms
+
-
+
-
SSP*
SSP*
SSP*
SSP*
DUT
INPUT
LO
INPUT
HI
SENSE
HI
SENSE
LO
Mux
*SSP: Solid State Protection Circuit
↔
ON
I Source
10μA
100μA
1mA
10mA
A/D
Converter
Gain
Amp
1MΩ
ON
ON
0.8μF
20mV Reference
(Main Clamp,
Monitors SENSE HI)
50mV Reference
(Secondary Clamp,
Monitors INPUT HI)
100kΩ

Keithley 2750 Specifications

General

Brand	Keithley
Model	2750
Category	Switch
Language	English