Comtech EF Data CRS-280L - Manual (Page 50)

CRS-280L L-Band IF Switch for 1:N Redundancy Revision 1
Redundancy System Configuration / Operation MN/CRS280L.IOM
5–2
5.3 1:N Redundancy System Power-up Sequence
After the 1:N redundant system cabling is complete, and the companion switch and modems have
been initially configured, the complete sysyem may be powered up. The typical equipment power-
up sequence is as follows:
Step Instructions
1 Turn on the redundant and traffic L-Band modems.
2
Power up the CRS-280L L-Band IF Switch switch by turning both power supply
switches, located on the CRS-280L rear panel, to the
on position.
Once the power supplies are turned on, both power status LEDs (A and B) on the
front panel should illuminate green.
3 Power up the companion switch as applicable (e.g., turn on the system controller /
data switch for the CRS-300, CRS-400, or SMS-7000; turn on the CRS-500 Control
Switch Unit (CSU), etc.)
IMPORTANT
The CRS-280L is designed to operate with only one power supply energized.
However, it is recommended to continually operate the system with both
supplies energized for redundancy.
5.3.1 CRS-280L operations with the CRS-500 M:N Redundancy System
While the CRS-500 M:N Redundancy System supports 2:N redundancy and IP Sub-MUX
operation, the CRS-280L L-Band IF Switch is limited to 1:10 (maximum) redundancy – 2:N
redundancy and IP Sub-MUX operation are not supported by the CRS-280L.