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Keithley 2790 - 2 Keithley 7751, 7752, and 7753 Switching Modules; Figure 2-1 Simplified Schematic of Keithley 7751, 7752, and 7753 Switching Modules

Keithley 2790
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Model 2790 SourceMeter
®
Switch System User’s Manual 2-3
Figure 2-1
Simplified schematic of Keithley 7751, 7752, and 7753 switching modules
200k(7751)
20k(7753)
HI
Source
Sense
Ch. 1
LO
Source
Sense
Ch. 2
A1
B1
Ch. 3
Bank 1
J101
Ch. 13
Ch. 14
Ch. 15
Ch. 16 Ch. 18
Ch. 19
HI
Input
LO
Sense
To Model
2790
Backplane
HI
LO
Source HI
Source LO
Sense HI
Sense LO
J105
+
50-500V
Ch. 17
HI
Source
Sense
Ch. 4
LO
Source
Sense
Ch. 5
Bank 2
J102
A2
B2
Ch. 6
HI
Source
Sense
Ch. 7
LO
Source
Sense
Ch. 8
Bank 3
J103
A3
B3
Ch. 9
HI
Source
Sense
Ch. 10
LO
Source
Sense
Ch. 11
Bank 4
J104
A4
B4
Ch. 12
Interlock
Guard
Guard
Source Enable
Isrc HI
Isrc LO
Guard
Guard
J107
Vsrc HI
Vsrc LO
+
0-50mA
Ch. 24
20mV
Dry
Ckt
Ch. 20
Ch. 23
I/V
Current/Voltage
Amplifier
(7751/7753 Only)
Cable Discharge
(7751/7753 Only)
Vsource
Ch. 28
(7751/7753
Only)
Isource
Ch. 27
100k
+5V
J106
I/V IN
I/V OUT
I/V LO
J108
Ch. 25
Interlock
+5V
10k
10k
Ch. 22
Ch. 21
1
Ch. 22 Open: I-source Select
Ch. 22 Close: V-source Select

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