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Remote Operation Model GFC7001E Carbon Dioxide Analyzer
Teledyne Analytical Instruments 163
Female DB-9 (COM2)
(As seen from outside analyzer)
(RS-485)
1 234 5
6 7 8 9
GND
RX/TX+
RX/TX-
Figure 8-6: Back Panel Connector Pin-Outs for COM2 in RS-485 Mode.
The signal from this connector is routed from the motherboard via a wiring harness to a 3-pin connector on the
CPU card, J15.
Figure 8-7: CPU Connector Pin-Outs for COM2 in RS-485 Mode
NOTE
The DCE/DTE switch has no effect on COM2.