Keithley 7999-2, Instruction Manual

Page: 22 / 44

Connections 2-7
CONTROL/MEASURE/POWER connector
Figure 2-5 shows the terminal configuration for the CONTROL/MEASURE/POWER con-
nector, and Table 2-3 summarizes terminal designations along with switched signals.
Relay power and control
To control relays, +24V DC must be applied to pin 5 of the CONTROL/MEASURE/
POWER connector. A relay channel can be closed by setting the associated CONTROL line
listed in Table 2-3 low.
Table 2-3
CONTROL/MEASURE/POWER connector terminals
Terminal Description Switched signal(s)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15 DVM+
CONTROL 6
DVM-
CONTROL 7
+24V
CONTROL 8
CONTROL 1
CONTROL 9
CONTROL 2
M
CONTROL 3
MEASVOLT-
CONTROL 4
NO CONNECTION
CONTROL 5
EAR_MIC
MEASVOLT, LEVELING_MIC
XMIC
XMIC
XEAR
AUDIO_OUT
SPECIAL_AUDIO
XEAR
AUDIO_IN
1 8
9 15
Figure 2-5
CONTROL/MEASURE/
POWER connector terminals