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User manual
5. - HOW TO USE THE PRODUCT
To carry out the configuration of each
modulator, use the programmer and follow
these steps:
5.1.- NORMAL MENU
Insert the programmer in the front connector
of the COFDM-PAL programming module
("PRGM"). First, the version of the software
in use, will appear. For example 2.00:
a.- Frequency / Output channel
Insert the programmer into the front connec-
tor of the modulator. The value of the fre-
quency of the video carrier of the output
channel or the output channel number will
appear, depending on the mode that was
selected the last time the device was pro-
grammed (for example channel 52):
or if the module is in frequency mode, and if
we wanted to select that same channel
(video carrier in the frequency 719.25 MHz).
To change the frequency value indicated, it
is necessary to press the
button, this will
make the selected digit flash on and off. The
and
buttons change the value of the
digit. By pressing the
button again, we
select the following digit, which can also be
modified, and so on until we have obtained
the desired value. The digit on the right of
the point, indicates the decimals:
.0
=> .00 MHz
.2
=> .25 MHz
.5
=> .50 MHz
.7
=> .75 MHz
The range of permitted input values is from
46 to 862 MHz.
If operating in channel mode, it will be
necessary to change this, either by increa-
sing or decreasing the value that appears on
the remote using the
and
b.- Output level
By pressing the
button, the following
menu appears on the display. This is the
regulation of the output level, for example
50:
The
and
buttons modify the selected
value. The range of permitted values is from
00 (minimum level) to 99 (maximum level).
c.- Video level
40
Controllable Universal Modulator
If you press the
menu appears, for example 4:
The
and
level. The range of permitted values for the
video level is from 0 to 7.
These values correspond approximately
with the following values of modulation
depth, as long as the input level is 1Vpp:
0
=> 72,5 %
1
=> 75 %
2
=> 77,5 %
3
=> 80 %
.
d.- Audio level
By pressing the
menu appears. This is the audio level, for
example 4:
To modify the modulation format, press the
or
buttons until the desired value
appears (between 00 and 14).
Mono modulator: A deviation of 50 KHz can
be achieved for a signal
button, the video level
buttons modify the video
4
=> 82,5 %
5
=> 85 %
6
=> 87,5 %
7
=> 90 %
button, the following
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