Setup Procedure
Configure Modem and Verify Rx Lock
OceanTRx
TM
4-500 Installation and Operations Manual
7-21
Under,
Alignment offsets,
add or delete the value the antenna was skewed and
verify signal level with operator.
For example:
if the measured value was +1°, °, and current Cross-polSkew was
“0” (zero),
then define the
Cross-PolSkew KU
as -1°
Figure
7-23: Defining Cross-poll Skew
Click
OK
.
6. Set the
Mode
menu to
Acquire
and verify CPI with satellite operator.
7. If CPI is OK, save the configuration (press
V
on the keyboard); otherwise, repeat the
process.
8. For 1dBc, test:
Verify with NOC operator that the antenna Tx is within the valid range.
You may be required to reduce BUC attenuation in order to increase Tx power.
Depending on your modem vendor, you may be required to perform additional
operations, according to instructions given by the satellite operator.
7.9
Configure Modem and Verify Rx Lock
Configure your modem
according to the manufacturer’s instructions
and verify RX lock on
the modem.
NOTE:
For modem type COMTEK CDN 570L and some GILAT SKYEDGE models, you may view
additional readings via MNC (Management and Control link).
This requires a customized cable.
7.9.1
Satellite Validation
During the tracking process, a situation may develop where the antenna locks onto an
incorrect satellite, due to any of the following factors:
An adjacent satellite producing signals in the same frequency spectrum as the
OceanTRx
TM
4-500 tracking signal.
A terrestrial source of electromagnetic interference (EMI) in the same frequency
spectrum.
Strong reflections from obstructions, producing wide-band noise in the same
frequency spectrum.
