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Information for Replacing 4268A, 4288A with E4981A
Comparison of Interfaces
Scanner interface
Figure B-2
Scanner interface pin assignment
E4981A
/ C H 0
1
8
/ C H 1
/ C H 2
2
9
/ C H 3
/ C H 4
3
10
/ C H 5
/ C H 6
4
11
/ C H 7
/ C H _V A LID
5
12
E X T_TR IG
/ IN D E X
6
13
/ E O M
E X T_D C V
7
14
C O M M O N
e4981aue0025
Table B-4
Scanner interface factory setting
Voltage range of input signal drive
362
4268A
/ C H 0
1
8
/ C H 1
/ C H 2
2
9
/ C H 3
/ C H 4
3
10
/ C H 5
(reserved)
4
11
(reserved)
/ C H _V A LID
5
12
E X T_TR IG
/ IN D E X
6
13
/ E O M
E X T_D C V
7
14
C O M M O N
power supply
Keysight E4981A 120 Hz/1 kHz/1 MHz Capacitance Meter
4288A
/ C H 0
1
8
/ C H 1
/ C H 2
2
9
/ C H 3
/ C H 4
3
10
/ C H 5
(reserved)
4
11
(reserved)
/ C H _V A LID
5
12
E X T_TR IG
/ IN D E X
6
13
/ E O M
E X T_D C V
7
14
C O M M O N
E4981A
4268A
5-15 V
5-15 V
4288A
5-15 V
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