Comtech EF Data CDD-880 - Manual (Page 42)

CDD-880 Multi Receiver Router Revision 1
Rear Panel Connections MN-CDD880
3–6
3.2.1 ‘L-BAND Tx’ IF Connector
THERE MAY BE DC VOLTAGES PRESENT ON THE TYPE ‘N’ TX 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 connection to a 75
Ω
system is desired, 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.
3.2.2 ‘ETHERNET | TRAFFIC | GE’ and ‘ETHERNET |
TRAFFIC/MANAGEMENT | GE’ Gigabit Ethernet Connectors
Connector Type Name Direction
RJ-45 female modular jack
ETHERNET | TRAFFIC | GE
In/Out
ETHERNET | TRAFFIC/MANAGEMENT | GE
• The ‘ETHERNET | TRAFFIC | GE’ port is dedicated to Ethernet terrestrial data
traffic. The ‘ETHERNET | TRAFFIC/MANAGEMENT | GE’ port is used for both
Ethernet terrestrial data traffic and remote management and control (M&C) of
CDD‐880 functions via SNMP/HTTP.
• Typical for both ports:
o Ports operate at 10/100/1000 Mbps, half and full duplex, auto‐
negotiating.
o The typical maximum Ethernet packet size is 1522 bytes (including
Ethernet headers and CRC).
o Two operational LED indicators are provided:
ƒ LNK – Comms Link detected (glows amber)
ƒ ACT – Activity detected (flashes green)
Connector Type Name Description Direction
50Ω Type ‘N’ Female L-BAND Rx Rx IF Signal, L-Band In