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.
1.6.4. for changing the modulator input
eady configured the system in local control, maintenance mode, and also having unlocked
d called up the “COFDM PARAMETERS” window.
Procedure
This procedure describes how to change the input signal type of the modulator unit and the clock type
of ADAPT exciter in DVB-T Transmitter only.
Having alr
the PCL an
Note :
♦ MODAP Version only
To set up a new parameter configuration of the modulator, the three corrections (ALE,
LUT and OLDC) should be set to the
FIXED mode. The control keys can be defined in
the "MISCELLANEOUS" window and "CONTROL MAINT Level 4" window.
♦ SIRIUS Version only
To set up a rameter configuration of the modulator, the ections (ALE, and new pa two corr
LUT) should be set to the
FIXED mode.
LANEOUS" window.
The control keys can be defined in the
EL"MISC
ACTIONS RESULT
Set the corrections of
A
♦ ing the
s of the ADAPT
In FIXE position, the correction parameters are not
AL
DAPT exciter to
FIXE MODE :
Refer to procedure for chang
configuration parameter
exciter.
continuously adjusted.
E and LUT corrections are FIXE MODE.
♦ Refer to procedure for changing the
configuration parameters of the OLDC
card (Available in MODAP version only).
♦ OLDC correction is in FIXE MODE.
Select the required
parameters input
♦ In the “COFDM PARAMETERS” window,
press on the “DATA XXXX” key
♦ The available values of input parameters
successively on the key.
successively until the required input
signal type is displayed.
♦ In the “COFDM PARAMETERS” window,
press on the “CLOCK XX” key
♦ The key flashes until the selection is validated.
successively until the required clock type
is displayed.
appear
Validation of selection
♦ Press the “VALID” key.
♦ The “DATA” o
and remains lit.
r “LOCK” keys stops flashing
♦
The system activates the new input
parameter
Cancelling the
selection
♦ Press the “CANCEL” key. ♦ The system ignores the new input parameter.
Set the corrections of
ADAPT exciter to
ADAPTIVE MODE
♦ Refer to changing the configuration
parameters of the ADAPT exciter.
♦
ALE and LUT corrections are ADAPT
MODE.
♦ Refer to for changing the configuration
parameters of the OLDC card (Available
in MODAP version only)..
♦
OLDC correction is in ADAPT MODE.
9932 V2
45321648.01 108 B E
Checked
25 / 192
Numéro / Number Doc. Rev. Lan
g
u.
27/06/2006
Pa
g
e