Skanti TRP 9250, Technical Manual, Page: 281 / 289

Pin no. Designation Direction Remarks
1 PC DTR / V+ Input +5V/+15V supply for opto-isolated serial data
interface for printer (RS-232) *)
2 PC GND Power supply reference for serial data interface for
printer (RS-232) *)
3 Alarm Out Output Open collector (RS-410N) for external alarm. Max
50mA, 32V. Active Low
4 Alarm In Input For external distress alarm button. Internal pull-up
to 15V through 2.5kohm.
5 NMEA Rx+ Input Opto-isolated serial interface for navigation
equipment (NMEA 0183)
6 n.c.
7 n.c.
8 n.c.
9 PC Rx Input Serial data input or busy input for printer (RS-232) *)
10 PC Tx Output Serial data output for printer (RS-232) *)
11 +24 V Output +24V for use with ’Alarm Out’. Max 100 mA.
Internally protected.
12 GND
13 NMEA Rx- Input Opto-isolated serial interface for navigation
equipment (NMEA 0183)
14 n.c.
15 n.c.
Table 4
*) The printer interface is opto-isolated with driver power delivered from the printer. Most printers
deliver a High (+5V to +15V) signal on one of the connector pins when the printer is operational.
Opto-isolation may be disabled by connecting the terminals PC GND and GND and connecting a
2.2 kohm resistor between the ter24V and PC DTR/V+.
The terminal ’PC RX’ is used for handshake signal input:
If Xon/Xoff handshake is used, the terminal must be connected to
the outgoing serial data pin of the printer.
If Busy (High/Low) handshake is used, the terminal must be
connected to the printer Ready/Busy signal output.
See page 3-20 for configuration of printer interface.
AUX CONNECTOR, DCU 9000 DSC INSTALLATION
TRP 9250 TECHNICAL MANUAL 7-17