HP 5890 Series II

APPX A-12
P13 COMMUNICATIONS PCB CONNECTOR
P13.1 BD0
P13.2 BD1
P13.3 BD2
P13.4 BD3
P13.5 BD4
P13.6 BD5
P13.7 BD6
P13.8 BD7
P13.9 *EXT_OUT3 ------------------- | Decode to give
P13.10 A(5) | addresses 3,35,67,99
P13.11 A(6) | for Input or Output
P13.12 *EXT_IN3 --------------------- |
P13.13 +5V
P13.14 +5V
P13.15 DGND ( for digital circuits)
P13.16 DGND ( for digital circuits)
P13.17 D240 ( 240 Hz square wave)
P13.18 POP ( power-on-pulse)
P13.19 SGND ( for switching or analog circuits)
P13.20 SGND ( for switching or analog circuits)
P13.21 +24V
P13.22 +24V
P13.23 -24V
P13.24 -24V
J14 AUXILIARY CONNECTOR
J14.1 AUX HEATER
J14.2 AUX HEATER RETURN TO ACGND
J14.3 VALVE2
J14.4 VALVE2 RETURN TO ACGND
J14.5 VALVE1
J14.6 VALVE1 RETURN TO ACGND
P15 WORKFILE EMULATION CONNECTOR
P15.1 Workfile emulation ( to A2 OF U16 )
P15.2 Workfile emulation GND
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