Comtech EF Data KST-2000A/B - Manual (Page 52)

Ku-Band Satellite Transceiver Revision 9
Operation MN/KST2000AB.IOM
3–4
3.1.2 Downlink Setup
Step Procedures Troubleshooting
Apply a signal in the appropriate receive
frequency range according to the following
table at a known level (approximately –95
dBm) to the LNA or LNB input. 1
KST-2000A
10-95 to 12.75 GHz KST-2000B
10.95 to 11.70 GHz
11.70 to 12.20 GHz
12.25 to 12.75 GHz
1. If the LNA or LNB is using power
supplied by the KST-2000A/B,
enable the LNA (or LNB) power
– see Appendix B.5.
2. After a 10-minute warm-up, per-
form an LNA (or LNB) calibra-
tion, and enable LNA (or LNB)
faults if desired.
3. See Appendix B.5.
2 Set the down converter to the desired RX
operating frequency. 1. See Appendix B.3.
2. There should not be any existing
receive system faults.
3. See Appendix B.9.
3 Using an appropriate power measuring
device attached to the IF OUT connector
(J4), set the down converter attenuator
until the desired downlink gain is attained. See Appendix B.3.
Note:
At this point there should be
no existing faults.
4 1. Execute a <Clear Stored Faults>
command to clear the fault log, wait a
few moments.
2. Execute a <System Fault Status>
command to verify.
See Appendix B.9.
5 1. Remove the AC power from the unit.
2. Remove the 70 MHz (140 MHz) test
source.
3. Remove the RX signal source.
4. Remove the coupler/attenuator from
the HPA.
6 1. The system is ready for final installa-
tion to the antenna feed.
2. Perform the rest of the system align-
ment to applicable international, na-
tional, or local regulations.