Female DB-9 (COM2)

Teledyne API – Technical Manual - Model 300E Family CO Analyzers

Remote Operation

Female DB-9 (COM2)

(As seen from outside analyzer)

RX/TX-

RX/TX+

1 2 3

6

7

GND

45

8

9

(RS-485)

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.

04288D DCN5752

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Teledyne M300EM operation manual Female DB-9COM2, Rx/Tx Rx/Tx+, The DCE/DTE switch has no effect on COM2