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DTP T HWP 231 D and DTP T HWP 331 D Transmitters • Installation and Operation 13
RS-232 and IR Connector Wiring
Figure 10 shows how to wire the RS-232 and IR connector for the DTP T HWP 231 D and
331 D units.
Do not tin the wires!
Controlling
Device
Ground (G)
Receive (Rx)
Transmit (Tx)
Ground (G)
Receive (Rx)
Transmit (Tx)
Bidirectional
FunctionPin
TX
RX
Gnd
Transmit data
Receive data
Signal ground
IR
Tx Rx G Tx Rx
RS-232
IR
Tx Rx G Tx Rx
Do not tin the wires!
RS-232
Figure 10. RS-232 and IR Connector Wiring
ATTENTION:
• The length of the exposed (stripped) copper wires is important.
The ideal length is 3/16 inch (5 mm). Longer bare wires can short together. Shorter
wires are not as secure in the connectors and could be pulled out.
• La longueur des câbles exposés est primordiale lorsque l’on entreprend de les
dénuder. La longueur idéale est de 5mm (3/16inches). S’ils sont un peu plus
longs, les câbles exposés pourraient se toucher et provoquer un court circuit. S’ils
sont un peu plus courts, ils pourraient sortir, même s’ils sont attachés par les vis
captives.
NOTE: Do not tin the power supply leads before installing them in the direct insertion
connector. Tinned wires are not as secure in the connectors and could be pulled out.