Comtech EF Data CSAT-6070 - Manual (Page 104)

5 to 25 Watt C-Band Transceiver Revision 0
Redundant Systems MN/CSAT607025.IOM
B.4 C
ONFIGURING A
R
EDUNDANT
S
YSTEM
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:
• Transmit Frequency
• Receive Frequency
• Transmit Attenuation
• Receive Attenuation
• Auto Fault Recovery
• Cold Start
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:
• Turn ON the Transmit Amplifier
• Turn OFF the Transmit Mute
• 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.
B–10