Comtech EF Data MDX420 SkyWire Manual - Manual (Page 34)

MDX420 SkyWire™ Satellite Network Gateway Front & Rear Panel Interfaces
MN-MDX420 Revision 6 4–4
BUC. In addition, the gateway supports monitoring features that provide verification of system status.
The gateway monitors both the current and the voltage at the output of the transmit port, thus allowing the
user to monitor the status of both the indoor gateways and outdoor equipment.
4.3.3.2 RX IF (J8)
The receive IF input port is a 75 Ohm F-Type female connector. The IF frequency can be programmed
from 950 to 2050 MHz in 1 Hz Steps.
This interface supports LNB voltages and the capability of supporting an optional 10 MHz reference. . A
RX DC Voltage LED indicator (below the J8 connector) is illuminated when DC power is being supplied to
the LNB. In addition, the gateway supports monitoring features that provide verification of system status.
The gateway monitors both the current and the voltage at the input of the receive port, thus allowing the
user to monitor the status of both the indoor gateways and outdoor equipment.
4.3.3.3 Alarm (J6)
The Alarm Port is a 9-Pin Female “D” Connector. Refer to Table 4-3 for pinouts.
Table 4-3. ALARM Port 9-Pin Female “D” Connector (J6)
Pin No. Connection Direction
1 Summary Fault - NO No Direction
2 Summary Fault – C No Direction
3 Summary Fault – NC No Direction
4 Ground Ground
5 Mod Fault (open collector) Output
6 Demod 1 Fault (open collector) Output
7 Demod 2 Fault (open collector) Output
8 Demod 3 Fault (open collector) Output
9 Demod 4 Fault (open collector) Output