Comtech EF Data CDM-IP 300L - Manual (Page 71)

CDM-IP 300L IP-Centric Satellite Modem Rev. 1
CD/CDMIP300L.IOM
44
2.3.7 A
LARMS
C
ONNECTOR AND
P
INOUTS
(J10)
The alarm connector provides Form C contact closures for alarm reporting. The two
Form C summary fault contacts are Modulator and Demodulator.
The alarm connection is a 9-pin female D connector (J10) located on the rear panel of the
modem. Screw locks are provided for mechanical security on the mating connector.
Table 17 . Alarms Connector and Pinouts (J10)
Pin # Signal Function Name
1 Alarm 1 is faulted NO
2 COM
3 Alarm 1 is not faulted NC
4 Alarm 2 is faulted NO
5 COM
6 Alarm 2 is not faulted NC
7 Alarm 3 is faulted NO
8 COM
9 Alarm 3 is not faulted NC
Notes: 1 Alarm 1 = Not used
2 Alarm 2 = TX
3 Alarm 3 = RX
2.3.8 RF O
UTPUT
C
ONNECTOR
(CP1)
CP1 is a 50 Ω Type N connector for the TX IF signal. In normal operation, the output
will be a QPSK (Optional: OQPSK or 8-PSK) or BPSK modulated result of the Data I/O
connector between 950 to 1750 MHz, in 100 Hz steps
2.3.9 E
XTERNAL
R
EFERENCE
(CP2)
CP2 is a BNC connector for an EXT REF. The input impedance is 75 Ω. For normal
operation, the desired carrier signal level is ≥ 0 dB.
EXT REF frequencies are EXT 1, EXT 5, EXT 10, and EXT 20 MHz.
2.3.10 RF I
NPUT
C
ONNECTOR
(CP3)
CP3 is a Type N connector for an RX IF signal. The input impedance is 75 Ω (Optional:
50 Ω). The input return loss is ≥ 10 dB from 950 to 1750 MHz.