A2537-002/01 February 2020 4-6 SEMCO Proprietary Information
For <Ch2>, the operator uses the horizontal LEFT (4) and RIGHT (6) arrows to change the Tuner Menu
to <Ch2>, and pushes ENTER or SELECT (5) to again highlight Ant. CF En. and the OFF/ON window in
bright magenta. The operator uses the UP (2) and DOWN (8) arrows to select ON, and then pushes
ENTER or SELECT (5) to enable the <Ch2> Antenna Correction Factor feature.
Once the Antenna Correction Factor feature is enabled, the next step is to enter a Correction Factor (Ant.
CF) representing the insertion gain or loss between the antenna and the receiver. The operator uses the
UP (2) and DOWN (8) arrows to scroll to Ant. CF in blue, and then pushes ENTER or SELECT (5) to
highlight the 0 dB window in bright magenta. The UP (2) and DOWN (8) arrows are then used to select
Positive or Negative. The operator then enters a numerical value that represents the antenna-to-receiver
insertion gain or loss (i.e., Correction Factor). The operator repeats these steps to enter an Antenna
Correction Factor in the second receiver channel.
Once both receiver channels have the Antenna Correction Factor enabled and a numerical insertion gain
or loss Correction Factor entered, then the operator can push the DISPLAY button, use the UP (2) and
DOWN (8) arrows to scroll to GENERAL STATUS, press ENTER or SELECT (5) and observe the SSI
indication as the RF signal level at the antenna.
In the Figure 4-10 example, a <Ch1> Positive 10 dBm value has been entered, representing an insertion
loss of 10 dBm. Before Ant. CF was enabled, Absolute RSSI was -70 dBm, with Antenna RSSI now -60
dBm as shown on the General Status SSI readout.
Figure 4-10
Antenna Signal Strength and Correction Factor Settings
-----------------------------------Antenna Correction Factor Enabled-------------------------------------------------
------------------------------------10 dBm Antenna Correction Factor (CF) Value Entered----------------------
Ch1 now indicates
an Antenna Signal
Strength of -60 dBm
with an Absolute RSSI
of -70 dBm at Receiver
Ch1 RF input
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