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QMultiFlex-400™ Installation and Operating Handbook
Then we would configure the Hub Modem to use (140.0e6-57.329e3=) 139.942671MHz,
the true center frequency of the echo signal.
Figure 8-9 - QMultiFlex-400™ Rx Carrier Frequency Field
On completion, restore the hub demodulator configuration and drop the hub transmit
carrier.
Enable the IB remote carriers one at a time and again take a performance snapshot of the
links in terms of the Es/No for each remote IB carrier as received by the hub. Drop each IB
carrier when enabling the next. Once each IB carrier has been measured / recorded, enable
all the IB carriers. (This is to ensure there are no overlapping carriers, which will prevent
the hub multi-demodulator from locking.) Ensure all Hub demods lock.
Hub Demod status can be noted from the
Figure 8-10 – QMultiFlex-400™ Demod Status
Status > Demod 1 – 8
8-10
menu tab:
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