User's Manual Part 1

Digital Liquid Cooled UHF
TV Equipment
Exploitation
Information contained is this document is confidential, is THOMSON property and cannot be disclosed in whatever form without prior written authorization of THOMSON.
1.6.
1.6.1. Procedure to call the maintenance mode
Adjustments or change ly intenance mode and
when the PCL is unlocked.
s locked (disabled), unlock it (refer to procedure for unlocking the PCL, § procedure
ck or unlock the PCL.
Procedures for adjusting or changing operational parameters
s to operational parameters can on be carried out in ma
If the PCL screen i
lo
ACTIONS RESULT
To call up the
"CONTROL" window
♦ Press the "CONTROL" key.
♦
The PCL "CONTROL
appears.
of the PCL:
Level 1" window
If the transmitter is in
normal mode, switch
to maintenance mode
♦ Press on the «MODE» key in the PCL
"C Level 1" window.
♦ The "NORMAL" message window above the
«MODE» key is replaced by a flashing "MAINT
MODE" message window.
♦ ystem is now in maintenance mode.
ONTROL
♦ Press the "VALID" key.
♦ The "MAINT" message window stops flashing and
remains lit.
The s
To call up the
"CONTROL MAINT
Level 2" window
♦ NTROL LEVEL 2" in the
"CONTROL Level 1" window.
♦
ROL MAINT Level 2" window
Press "CO
The "CONT
appears.
1.6.2. Procedure for adjusting the calibrated transmitter power
Adjustments or changes to ca power can only be carried out in installation mode.
The calibrated trans the “ INSTALLATION PARAMETERS Level 1” window of
the PCL. The RF
according to RF feedba
librated transmitter
mitter can be inserted in
probes of the transmitter are adjuste
ck input value.
d depending on required power value and
ACTIONS CONSEQUENCES
To call up the
"INSTALLATION
PARAMETERS
Level 1" window
♦
interconnection card on the
side of the sub-units behind the CPU
♦
♦ hed to installation mode.
1"
Set switch SW1, situated in the
exciter/CPU
card, such that the dot is visible,
Reset CPU board.
The transmitter is switc
♦ The "INSTALLATION PARAMETERS Level
window appears on the PCL and displays the
current transmitter configuration parameters.
Select the required
power value
♦ In the "INSTALLATION PARAMETERS
LEVEL 1" window, press on the "CAL
PWR" key.
To insert a parameter
value
♦ Enter the calibrated value on the window
keyboard,
♦ Press "ENTER" to validate the entry.
Note:
♦ The value is displayed under the window title.
♦ The "INSTALLATION PARAMETERS" window
appears.
♦ The "NUMERICAL VALUE" window appears.
To cancel an entry press on the "EXIT" key.
♦ The "INSTALLATION PARAMETERS Level 1"
window reappears.
♦ The calibrated power value remains unchanged
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Numéro / Number Doc. Rev. Lan
g
u.
27/06/2006
Pa
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e