User's Manual Part 5

Digital Liquid Cooled UHF
TV Equipment
Use of commands and description of indicators
9932 V2
45321648.01 108 B E
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Numéro / Number Doc. Rev. Lan
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27/06/2006
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Information contained is this document is confidential, is THOMSON property and cannot be disclosed in whatever form without prior written authorization of THOMSON.
2.3. Local control panel
The Local Control Panel (PCL) consists of two units:
♦ an LCD touch screen,
♦ a display circuit.
It is the principal user interface for the transmitter. It gives the
operator the facilities to display the various status conditions of the
transmitter and its main sub-units.
2.3.1. Indicator lamps and message displays
There are no status indicator lamps to indicate the status conditions of the display card. The indicator
lamps on the front of the PCL indicate the overall status of the transmitter.
2.3.2. Adjustment controls
R435
TEST
R475
The sensitivity controls on the front of the PCL are used to set the parameters which are displayed by
the bar graph on the PCL and in the "RF REFLECTED LEVEL" and "RF LEVEL" windows; these
adjustments set the input signals and are as follows :
♦ R435 “POWER INDICATION” : sensitivity control for output power indication,
♦ R475 “ANTENNA VSWR” : sensitivity control for antenna SWR indication.
The output power level is displayed on the bargraph.
Return SWR values are displayed on the "RF REFLECTED LEVEL" window.
2.3.3. Test points
Pressing on the "TEST" button on the front panel of the PCL with a pointed object will check that the
indicator lamps and bargraph LED’s are working properly.