Comtech EF Data CSAT-5060 - Manual (Page 51)

C-Band Transceiver Revision 1
Redundant Systems MN/CSAT5060.IOM
5–9
5.3 Configuring A Redundant System
Comtech EF Data’s Redundant CSAT system was designed to reduce the workload of a
Customer M&C system in two manners.
• First, the RSU-5060 can be configured to automatically monitor the status of the two
CSAT’s and always keep the unfaulted CSAT ONLINE.
• Second, configuration commands sent to the ONLINE CSAT via the EIA-485
interface are automatically passed along to the OFFLINE CSAT using the AUXCOM
interface.
Therefore, if the user wants to change a configuration parameter such as Tx Frequency
for the system, the user simply sends the command to the currently ONLINE CSAT and
the OFFLINE CSAT will automatically receive the same command.This automatic
update feature is true for the following configuration parameters:
¾ Transmit Frequency
¾ Receive Frequency
¾ Transmit Attenuation
¾ Receive Attenuation
¾ Auto Fault Recovery
¾ Cold Start
¾
In addition to this automatic update feature, the CSAT is designed to sense
whether it has gone from being the OFFLINE unit to the ONLINE unit and
will automatically perform the following functions if necessary:
¾ Turn ON the Transmit Amplifier
¾ Turn OFF the Transmit Mute
¾ Turn OFF the Receive Mute
This feature allows the user to run the OFFLINE unit with the Power Transistors turned
OFF to reduce power consumption if desired. However, it should be noted that
approximately a 10 to 20
°C (50 to 68°F) change in unit temperature can occur after
turning ON the Tx Amplifier and that gain stability during this warm up period will be
affected.