Codan NGT 2010 RF Technical & Service Manual page 767

Pinouts of the 15-way GPIO connector on the split-site interface controller
Figure 8: Front view of the 15-way GPIO connector on the split-site interface
controller
9
1
Table 6: Pinouts of the 15-way GPIO connector on the split-site interface
controller
Pin no. Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
NOTE
NGT Transceiver System Technical Service Manual
15
8
RTS
RS232 Receive data
RS232 Transmit data
Ground
Tx audio (50 kΩ balanced)
External alarm relay
External alarm relay
A rail
CTS
PTT
Morse
Spare
Spare
System audio
Tx audio (50 kΩ balanced)
External alarm relay: internal link to select normally open or closed. This
can be configured to switch to ground or the A rail.
8571—Overview and specifications
Input/output Signal level
Output 0 to 5 V
Input RS232
Output RS232
0 V
Input 300 mV p–p for ALC
threshold
Contacts rated 50 V, 1 A
Closed for alarm
Output +13.6 V nominal
Input RS232
Input 5 V TTL logic active low
Input 5 V TTL logic active low
Input/output 5 V TTL logic
Input/output 5 V TTL logic
Output 1 V p–p (maximum load
1 kΩ)
Input 300 mV p–p for ALC
threshold
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