Compatibility; Figure 1-3. 1:10 Redundancy W/Crs-280L - System-Level Block Diagram - Comtech EF Data CRS-280L Installation And Operation Manual

The CRS-280L features redundant power supplies with status Light Emitting Diodes (LEDs) on
the front panel. It may be configured for 4 to 10 channel applications (SMS-7000 supports 8
channels max). Each channel has a transmit section with TX input / uplink output and a receive
section with Rx output / downlink input.
Figure 1-3 shows the system level block diagram for a CRS-280L system.
Figure 1-3. 1:10 Redundancy w/CRS-280L – System-level Block Diagram

1.1.1 Compatibility

The Comtech EF Data CRS-280/280L IF Switch is designed specifically as an accessory
product for Comtech EF Data equipment. It is not designed to operate with any other
manufacturer's equipment.
The CRS-280L is not designed to convey Direct Current (DC) power to external equipment
such as LNBs or BUCs. Do not apply DC power to the L-Band input and output (Type 'N')
ports of the switch. In addition, the CRS-280L is not designed to pass to 10 MHz reference
or FSK signaling.
Introduction
CRS-280/280L IF Switch for 1:N Redundancy
1–3
Revision -
MN-CRS-280/280L