Comtech EF Data CRS-280L - Manual (Page 46)

CRS-280L L-Band IF Switch for 1:N Redundancy Revision 1
Cables and Connections MN/CRS280L.IOM
4–8
4.3 CRS-280L L-Band IF Cable Connections
Cables for connecting the CRS-280L L-Band IF Switch to the L-Band modems within the
redundancy system are available for purchase from Comtech EF Data and can be ordered at the
same time the order is placed for the CRS-280L:
CEFD Part No. Description
CA/RF10453-2 Cable Assembly, L-Band 50
Ω, Type ‘N’ male to Type ‘N’ male connectors, 2’
CA/RF10453-4 Cable Assembly, L-Band 50
Ω, Type ‘N’ male to Type ‘N’ male connectors, 4’
CA/RF10453-6 Cable Assembly, L-Band 50
Ω, Type ‘N’ male to Type ‘N’ male connectors, 6’
CA/RF10453-8 Cable Assembly, L-Band 50
Ω, Type ‘N’ male to Type ‘N’ male connectors, 8’
4.3.1 L-Band IF Cable Characteristics
IMPORTANT
If L-Band cables are not purchased from Comtech EF Data, use of a suitable
equivalent is recommended.
Cable Type Loss at 1GHz Loss at 2GHz
Semflex BPE200 (or equivalent) 0.11 dB/ft 0.15 dB/ft
4.3.2 L-Band Switch-to-Modem Cabling Requirements
The number of cables required depends on the switch system configuration. Per
the example shown at right, each modem connected to the CRS-280L front panel
requires two L-Band cables:
• One cable for the Rx L-Band connection
• One cable for the Tx L-Band connection
Each cable must be connected and secured using the Type ‘N’ threaded female
connectors on the front panel of the CRS-280L and rear panel of the L-Band
modems.