Skanti DSC 9001, Technical Manual, Page: 123 / 178

Pin no. Designation Direction Remarks
1 GND
2 PC Rx Input Serial interface for PC or radiotelex equipment
(RS-232) *)
3 PC Tx Output Serial interface for PC or radiotelex equipment
(RS-232) *)
4 Alarm 1 out Output Open collector (RS-410N) for external alarm. Max
50mA, 32V. Active Low
5 NMEA Rx+ Input Opto isolated serial interface for navigation
equipment (NMEA 0183)
6 On-Hook - Connected to Com pin 4.
7 PC GND Serial interface for PC or radiotelex equipment
(RS-232) *)
8 Rx Line- Output AF for radiotelex equipment. Connected to Rx Line-
input (Com connector)
9 n.c.
10 Disable Input Di24V output to Net when connected to
pin 24
11 GND
12 Key In Input Internal pull-up to 12V through 1kohm (RS-410N).
Low for keying TX from radiotelex equipment
13 GND
14 n.c.
15 Tx Line In- Input AF from radiotelex equipment. Connected to Tx
Line- (Com connector)
16 Tx Line In+ Input AF from radiotelex equipment. Connected to Tx
Line+ (Com connector) when DSC is not
transmitting
17 NMEA Rx- Input Opto isolated serial interface for navigation
equipment (NMEA 0183)
18 Alarm In Input For external distress alarm button. Internal pull-up
to 12V through 1.8kohm.
19 n.c.
20 PC DTR Input +5V/+15V supply for opto-isolated serial interface
for PC or radiotelex equipment (RS-232) *)
21 Rx Line+ Output AF for radiotelex equipment. Connected to Rx Line-
input (Com connector)
22 n.c.
23 Alarm 2 Out Output Open collector (RS-410N) for external alarm. Max
50mA, 32V. Active Low
24 GND
25 +24V Output +24V for use with ’Alarm 1 Out’ and ’Alarm 2 Out’.
Max 100 mA. Internal fuse.
Shield Cable screen
Table 6
*) Opto-isolated with driver power delivered from PC (DTR).
(Non-isolated: Set Jumpers J8, J9, and J13 on PCB 717 ON)
Note. If non-isolated. Pin 20 PC DTR must not be connected.
AUX CONNECTOR, DU 9000 INSTALLATION
DSC 9000 TECHNICAL MANUAL 3-39