Comtech EF Data CSAT-6070 - Manual (Page 94)

50 Watt C-Band Transceiver Revision 0
Maintenance and Troubleshooting MN/CSAT607050.IOM
C.1 M
AINTENANCE
T
ESTING
Use the instructions in Chapter 2 for installing the transceiver for checkout, and
the procedures in Chapter 3, for operating the transceiver.
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 6725 to 7025 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 50 Watt SSPA to the desired output.
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). The signal is then amplified to the
desired output level.
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
Appendix A (see the Retrieve Alarm Status commands).
C.3 C
ONVERTER
F
AULTS
Check the Alarm Status for possible faults, or an indication of a marginal
performance tolerance condition.
C.3.1 DC P
OWER
S
UPPLY
V
OLTAGES
24 VDC 10 VDC
20 VDC P5 VDC (+5 VDC)
12 VDC N5 VDC (-5 VDC)
A fault ("FT") indicates a voltage level exceeding
±10% of the power supply
voltage. If the voltage exceeds ± 10%, contact Comtech EF Data.
C-2