Comtech EF Data C5 - Manual (Page 124)

Installation C5/K1/K3 Integrated Satellite Terminal System
3–28 Rev. 0
3.4.5 Alarm (J10)
The alarm interface connection is a 9-pin female D connector located on the rear panel of
the IDU. Screw locks are provided for mechanical security on the mating connector.
Refer to Table 3-10 for pinout information.
Table 3-10. Alarm Pinouts
Pinout
Pin # Name Function
1 NO ALARM 1 IS ALARMED
2 COM COMMON
3 NC ALARM 1 IS OK
4 NO ALARM 2 IS ALARMED
5 COM COMMON
6 NC ALARM 2 IS OK
7 NO ALARM 3 IS ALARMED
8 COM COMMON
9 NC ALARM 3 IS OK
Notes:
1. There are jumpers on the PL/6031 EIA-422 interface. Place the jumpers on the
center pin and the pin towards the Master Clock (MC) to allow an external clock
input on pins 16 and 34.
2. If desired, place the jumpers on the TR side to allow an external clock input on
pins 12 and 30. Place the jumpers on the TR side for Demand Assigned Multiple
Access (DAMA) applications.
3. As of the publication date of this manual, the MC external clock input must be a
differential signal. Future layouts will allow for either differential or single input
clock with a ground.