Agilent Technologies 6890 Series Service Manual page 686

External event
+ 24V
R88
R87
11
10
U113
Jun 2001
3
6
1
7
2
8
5
9 (Chassis)
Note: The 24V OUT1 and 24V OUT2 signals are shown on the same
circuitry diagram below, however they each have their own distinct cir-
cuits. The CONTACT1 and CONTACT2 signals are presented in the
same manner. Bold designators refer to the bold signal to the right.
Current limited
036
038
R207
R201 287
037
R208
R208
035
U5.5
Relay
U5.6
K3
Electrical
Agilent 6890 Gas Chromatograph Service Manual
External Connectors, 6890A and 6890 Plus
J4
External event
Pin Function Max. rating
1 24 V Out 1 75 mA output
2 24 V Out 2 75 mA output
3 GND
4 GND
5 Contact 1 48V ac/dc, 250 mA 7
6 Contact 1
7 Contact 2 48V ac/dc, 250 mA 8
8 Contact 2
9 Chassis
GND
1 V24_OUT1
2 V24_OUT2
3 GND
4 GND
5 CONTACT_IN1
K2
7 CONTACT_IN2
6 CONTACT_OUT1
8 CONTACT_OUT2
1210
External event
Valve
5
6
7
8
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