Appendix C. Maintenance And Troubleshooting - Comtech EF Data CSAT-5060 Installation And Operation Manual

100Watt C-Band Transceiver
Maintenance and Troubleshooting
C.1 M
AINTENANCE
Use the instructions in
procedures in
1. The transceiver contains an Upconverter, a Solid-State Power Amplifier
(SSPA) and a Downconverter.
2. The Upconverter translates the IF input frequency of 52 to 88 MHz to an RF
frequency of 5845 to 6425 MHz depending on the setting for the output
frequency.
3. The IF input level is -20 to -30 dBm (typical). The signal is then amplified by
the 100 Watt SSPA to the desired output level (≥ +50 dBm at 1 dB
compression).
4. The Downconverter translates the RF input signal down to the IF output
frequency of 52 to 88 MHz.
5. The RF input level is -45 dBm (typical), and the IF output level is +20 dBm at
1 dB compression.
C.2 T
ROUBLESHOOTING
Transceiver operating problems can be identified by first observing the status indicators
through the Communications port. When a fault condition is indicated, using the Retrieve
Alarm Status (RAS) command can identify the specific fault, or faults. The status of all
transceiver functions will be displayed as described in
Alarm Status commands).
C.3 C
ONVERTER
Check the Alarm Status for possible faults, or an indication of a marginal performance
tolerance condition.
C.3.1 DC P
OWER
24 VDC
20 VDC
12 VDC
A fault ("FT") indicates a voltage level exceeding ±10% of the power supply voltage. If
the voltage exceeds ± 10%, contact Comtech EF Data.
T
ESTING
Chapter 2 for installing the transceiver for checkout, and the
Chapter 3, for operating the transceiver.
F
AULTS
S V
UPPLY OLTAGES
10 VDC
P5 VDC (+5 VDC)
N5 VDC (-5 VDC)
Appendix A
C-2
Revision 0
MN/CSAT5060100.IOM
(see the Retrieve