Comtech EF Data CDD-880, Инструкция по установке и эксплуатации

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CDD-880 Multi Receiver Router MN-CDD880
Rear Panel Connections Revision 2
3–7
3.3.1 IF Connector – L-BAND Rx (Type ‘N’ Female)
CAUTION – THERE MAY BE DC VOLTAGES PRESENT ON THE TYPE ‘N’ RX IF
CONNECTOR, UP TO A MAXIMUM OF 48 VOLTS. THE LED LABELED ‘DC!’ WILL LIGHT
TO INDICATE THIS CONDITION.
The return loss on this port is typically better than 17 dB. If you prefer to connect to a
75
Ω
system, an optional Type ‘N’ to Type ‘F’ adapter is available. While there will be
a reduction in return loss when doing this, the effect in most systems will be
negligible.
3.3.2 Utility Connector Group
3.3.2.1 ‘REDUNDANCY’ Connector (DB-9F) (FUTURE)
This interface is intended for future use for connection to an optional CEFD CRS-170A
1:1 L-Band Redundancy Switch.
Connector Type Name Direction
D-sub 9-pin female
REDUNDANCY In/Out
Table 3-2. ‘REDUNDANCY’ Connector Pinout
Pin # Description Direction
5 Ground –
9 Fused +12 volt Out
4 Redundancy In 2 In
8 Redundancy Out 2 Out
3 Redundancy In 1 In
7 Redundancy Out 1 Out
2 Receive Serial Data – auxiliary channel In
6 Transmit Serial Data – auxiliary channel Out
1 Ground –
Connector Type Name Description Direction
50Ω Type ‘N’ Female L-BAND Rx Rx IF Signal, L-Band In