Comtech EF Data CSAT-5060 Installation And Operation Manual page 99

100Watt C-Band Transceiver
Maintenance and Troubleshooting
C.3.2 RF C
ONVERTER
Synthesizer and IFLO Lock Detect Fault:
During normal operation, neither the Upconverter nor the Downconverter
synthesizer or IFLO should experience a Lock Detect fault.
• If one or more of these functions is faulted the transceiver will not
• If a fault condition exists and an EXT REF is being used, check the
• It may be necessary to remove the EXT REF if it is faulty.
• If the fault still exists, contact Comtech EF Data Customer Support .
C.3.3 R
EFERENCE
Reference Lock Detect:
A fault ("FT") indicates that the reference oscillator is not locked. Check all
connections to the converter module to make sure they are secure. If the fault still
exists, contact Comtech EF Data Customer Support.
C.3.4 LNA C
URRENT
LNA Current Fault:
This can indicate either a problem in the CSAT LNA current source circuitry or a
problem with the LNA.
• First, insure that the LNA is connected and that no shorts exist. Use the
• If the LNA and cable are OK, proceed to disconnect the LNA and measure
• Contact Comtech EF Data Customer Support for further troubleshooting.
M
ODULE
function properly.
connection to the transceiver and make sure it is secure.
O M
SCILLATOR ODULE
F
AULT
RMS? Command to query the measured LNA current.
from the center conductor of the cable to the shield of the cable using a
DVM. A voltage of 12Vdc shall be measured if the LNA Current Source
is Enable (i.e. LCS=1).
C-3
Revision 0
MN/CSAT5060100.IOM