2 utility connectors, 2 10/100 ethernet connector (rj-45) – Comtech EF Data LBC-4000 User Manual
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LBC-4000 L-Band Up/Down Converter System with Ethernet
Revision 2
Rear Panel Connections
MN-LBC4000A
3–7
3.2.2
Utility Connectors
3.2.2.1 J2 | EXT REF (External Reference) Input Connector (Type ‘BNC’
Female)
The J2 | EXT REF IN (External Reference Input) is used to supply a master reference
to the entire chassis. The input signal supplied here by the user is used for phase‐
locking the internal 10MHz reference oscillator to a customer‐provided 5 or 10 MHz
station clock. The impedance is matched for 50/75Ω, and requires a level in the
range 0.5V‐4.0Vpp square or sine wave.
3.2.2.2 10/100 Ethernet Connector (RJ-45)
Connector Type
Name
Direction
RJ-45 female modular jack 10/100 ETHERNET
In/Out
• The ‘10/100 ETHERNET’ port is used for both Ethernet terrestrial data traffic and
remote management and control (M&C) of LBC‐4000 functions via
Telnet/SNMP/HTTP.
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).