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SDA-5500/SDA-5510 Sweep Configuration: Configuring Reverse Sweep
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NOTE: Reverse sweep should be disabled when no SDA-
5000 OPT1 units are being used. This will optimize the
update rate of the forward sweep. It can also be disabled if
you are using the SDA-5510 for reverse sweeping.
Setting the Forward Telemetry Frequency (SDA-5510)
Use the up and down keys to enter the forward telemetry frequency. Be sure
that the telemetry frequency entered here matches the forward telemetry
frequency entered on the SDA field unit.
CAUTION ! Do not place the telemetry signal too close to
the diplex filter cut-off frequency because roll-off can
attenuate the telemetry signal to the degree that
communication fails. This also applies to placing the signal
in the high end roll-off region.
Setting the Forward Telemetry Level (SDA-5510)
This is the level of the carrier that the SDA-5510 uses to transmit telemetry
data. Use the Edit Box to set the telemetry level to an appropriate value.
When adjusting the telemetry level, take into consideration the following
losses: system, summing network, test point, and amplifier desired input.
Setting the Reverse Telemetry Frequency
(SDA-5500 and SDA-5510)
This is the frequency at which SDA-5500 and SDA-5510 units transmit
telemetry data. Although the reverse telemetry channel can be placed
anywhere in the reverse path band, its best if placed in a portion of the
reverse frequency band with at least 1 MHz free. To avoid potential
interference from ingress, place it in the high end of the return band.
CAUTION ! The reverse telemetry carrier frequency
should be carefully selected so that it will not interfere with
any existing carriers on the reverse plant.
NOTE: The Stealth sweep system requires 500kHz of free
spectrum on either side of the telemetry frequency.
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