Keithley 2750 Service Manual

4-20 Troubleshooting Model 2750 Multimeter/Switch System Service Manual
Tab le 4- 9
4 dry circuit signal switching
Range Q101 Q102 Q151 Q150 Q122 Q135 Q114 Q136
1
10
100
1k
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Range Q109 K101* K102* Q113 Q104 Q108 Q106 Q148
1
10
100
1k
OFF
OFF
OFF
OFF
SET
SET
SET
SET
RESET
RESET
RESET
RESET
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
*K101 set states: Pin 8 switched to Pin 7
Pin 3 switched to Pin 4
K102 reset states: Pin 8 switched to Pin 9
Pin 3 switched to Pin 2
Tab le 4- 10
2/4 reference signal switching
Range Q159 Q158 Q157 U133/0.7V U133/7V
1
10
100
1k
10k
100k
1M
10M
100M
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
OFF
OFF
ON
ON
Range Q123 Q125 Q124 Q126
1
10
100
1k
10k
100k
1M
10M
100M
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
*4 only

Keithley 2750 Specifications

General

Brand	Keithley
Model	2750
Category	Switch
Language	English