Kongsberg SIMRAD HT20470, Installation Manual

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492671/C
specifications for the actual "shunt capacitance". A common figure is 47.5 pF/m, which
gives a maximum cable length of about 50 meters.
Even though a standard exist for RS-232 pin configuration, certain manufacturer may still
choose their own connector pins for the various signals used. In order to make the RS-232
connection to your peripheral device work properly, you must always consult the relevant
instructions provided by the device manufacturer.
Pin configuration
Moxa CP114EL-I connectors / Adapter cable
Pin RS-232 RS-422 RS-485 (4-wire) RS-485 (2-wire)
1 DCD TXD-(A) TXD-(A)
2 RxD TXD+(B) TXD+(B)
3 TxD RXD+(B) RXD+(B) Data-(B)
4 DTR
RXD-(A) RXD-(A) Data-(A)
5
Ground Ground Ground Ground
6 DSR
- - -
7 RTS
- - -
8 CTS
- - -
9
- - -
Minimum cable requirements
•
Conductors
: 2 x 5 x 0.5 mm 2
•
Screen
: Overall braided
•
Voltage
: 60 V
•
Maximum outer diameter
: Defined by the plugs and/or the gable gland
If you wish to use RS-422 or RS-485 serial communication, use a cable with twisted pairs.
If you need to install a very long cable, increase the cross section.
Simrad HT20470 Installation Manual