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INSTALLATION
2
2.3 ELECTRICAL CONNECTIONS
DS4600A is equipped with a cable terminated by a 25-pin D-sub connector for
connection to the power supply and input/output signals. The details of the connector
pins are indicated in the following table:
CAUTION
Do not connect GND and SGNDs (Main or Aux) to different
(external) ground references. GND and SGNDs (Main and Aux) are
internally connected through filtering circuitry which can be
permanently damaged if subjected to voltage drops over 0.8 Vdc.
Figure 5 - 25-pin D-sub Connector
25-pin D-sub connector pinout
Pin Name Function
13 VS Power supply input voltage +
25 GND Power supply input voltage -
1 CHASSIS Chassis Ground
9 VS External Trigger supply voltage +
18 EXT TRIG+ External Trigger +
19 EXT TRIG- External Trigger -
6 IN1 + Input 1 +
10 IN1 - Input 1 -
14 IN2 + Input 2 +
15 IN2 - Input 2 -
8 OUT1 + Output 1 +
22 OUT1 - Output 1 -
11 OUT2 + Output 2 +
12 OUT2 - Output 2 -
20 RXAUX Auxiliary RS232 input
21 TXAUX Auxiliary RS232 output
23 SGND Aux Signal Ground Auxiliary interface
24 GND Power supply voltage -
16 Reserved
17 Reserved
RS232 RS485
full-duplex
RS485
half-duplex
2 TX232 TX485+ RTX485+
3 Main interface RX232 RX485+
4 (see par. 2.3.2) RTS232 TX485- RTX485-
5 CTS232 RX485-
7 SGND Main SGND Main SGND Main
7