Alcad TO-559 Manuel utilisateur
Technote 4: Setting up TO-559 Stereo Transmodulators
The equipment converts DVB-T digital TV programs into terrestrial band, analogue TV
channels. Stereo Trans-modulators comprise SAW filtering for maximum harmonic reduction
and true VSB response for adjacent channel operation.
IMPORTANT: Layout of the modules must be as shown above. Power Supply (FA-310/312)
must be located on the far left hand side and launch amplifier (PA-720) must be the next
module in the chain. Please look at the above picture.
AIM PROGRAMMER TO IR SENSOR LOCATED ON EACH MODULE WHEN
PROGRAMMING
Programming of Modules
Ensure the following prior to programming:
•It is necessary to connect all the modules to the support frame SP-226 (code 9120130)
for the system to function.
•It is also recommended that you make the earth connection to the building using a cable
with a section of at least 4 mm.
•Ensure that you have the Alcad programmer PS-003 with firmware version 4.7 or later.
•Power supply/Control cable must be plugged into each module. DO NOT ADD OR
REMOVE modules without disconnecting mains supply power from wall outlet. Always
disconnect the equipment, and then reconnect it to the mains supply so that the
amplifier recognises the new module. Failure to do so can cause equipment to fail.
Launch Amplifier
Power Supply
Automatic Power detection/injection
for masthead amplifiers
1.0 Programming theTransmodulator
To program the Transmodulator (TO-series), place the programming switch in the ON
(upward) position which can be seen from picture below. When you turn the switch in the “ON”
position the programming indicator will light up. While the programming indicator remains lit,
the channel processor is ready to receive data from the PS programmer. When the modulator
has been programmed, programming mode should be deactivated by placing the switch in the
OFF position. The programming indicator light will go out.
To start programming the equipment, Press any button on the PS-003 programmer to turn on
the programmer. The following screenshot below will appear.
You must then select the model you are trying to program. Scroll left or right using
the arrows until you get screenshot below
Press the down arrow and you will then see “Standard B/G stereo”on the programmer
screen. This can be seen below
Firmware Version of
programmer
Programmer
This is the Analog TV standard for Australia PAL B/G. Press the down arrow once so
that you can see the screen shot as below “Output frequency”.
Increase/decrease the values using the arrows or use the numeric keypad to enter
the frequency output that is desired. Ensure if you enter the value using the numeric keypad
you use the decimal point. The Australian Analogue/Digital frequency table can be seen on the
next page.
NB. The TO-series allows you to set the output frequency across the Australian
terrestrial frequency spectrum(45-860 MHz)as they are fully agile.
Once you have the desired Analog output frequency press transmit and you will see the
IR LED on the module you are programming flash. This indicates it is receiving the settings
from the programmer. Now press down arrow to get to the next screen below “Input
frequency”.This is the digital input frequency.
Increase/decrease the values using the arrows or use the numeric keypad to enter
the digital input frequency that is desired. Ensure if you enter the value using the numeric
keypad you use the decimal point. The Australian Analogue/Digital frequency table can be
seen on the next page
Once you have the entered the desired input centre frequency press transmit and you
will see the LED on the processor you are programming flash twice. This indicates it is
receiving the settings from the programmer. Now press down arrow to get to the next
screen below.
AUSTRALIAN DIGITAL/ANALOGUE FREQUENCY TABLE
Please note offsets are required on some channels. e.g. Broadcaster Nine Metro requires
191.625 MHz therefore set offset to + 1/6. For offset values look at table below to give you
the decimal Australian offsets.
Use the left and right arrows to change to the offset required.
Fraction
Offset
Decimal
Offsets
+ 1 / 6
+0.125
+ 2 / 6
+0.375
+ 3 / 6
+0.50
-1 / 6
- 0.125
-2 /6
- 0.375
-3 /6
- 0.50
(- -/-)
0
Press transmit to send the information then press down arrow to get to the next
screen below
NB. Bandwidth setting for Australia MUST ALWAYS be set to 7MHz.
Change by using the left/right arrows to 7MHz and then press transmit . Then
press the down arrow . You will be taken to the “Program List selection” screen which
enables you to program you wish transmodulate
By selecting Programs List on the PS Programmer, using left and right arrows, you
will be able to move through the program list shown on the on screen display (OSD). This way,
the program shaded is selected, the shadowed program will be the selected one and it could
be watched behind the OSD menu. You must be tuned into the output channel via the
spectrum analyser or a TV monitor.
NB. The handheld programmer PS-003 does not show the program pick
list.
Below is a snapshot of what the “On Screen Display” will looks like.
Use the left/right arrows to move through the program list of displayed above. Once
you have the desired program selected press the down arrow twice until you see the
“Output Format “screen then press transmit button. This enables you to select the
output format size such as letterbox 4:3 or full screen 16:9.
Then press transmit button and the OSD will bring up a selection box with the options to
select from. Use the left/right arrows to move through the output format list of
displayed on the next page.
WARNING: This submenu is only effective when the program selected is in the
16:9 format.
Input Digital
Frequency
Output Analog
Frequency
Program selection list
Bandwidth
Setting
Firmware Version of Module
Once you have the desired audio output format press transmit to ensure setting is sent
to module, then press the down arrow to go to the next screen below.
The” Invert Dual” feature allows you to switch between the audio carriers from A-B to B-A.
This inversion will be displayed in the OSD menu. On a mono TV, the audio carrier, will be B
instead of A. By pressing enables the switch. Press the down arrow to go to the
next screen below
Output Format Selection
By selecting Subtitles list in the PS programmer and press the transmit button: on the
OSD, the subtitles submenu will appear. Use the left/right buttons to move through
the list of subtitles displayed. Press the transmit button once more to close the subtitles
menu. Press the down arrow to go to the next screen below
The “Audio level” screen enables manipulation of the Audio Sub-carrier from the
transmodulator. Use the left/right buttons to set the audio level. You will see a bar
indicator (Audio Level) on the OSD.
Sliding Bar Indicator
Once you have the desired audio level set press transmit to ensure setting is sent to
module.
The transmodulator has now been programmed; programming mode should be deactivated by
placing the switch in the OFF position. The programming indicator light will go out.
Ensure to set power level of each module using the Phillips head variable gain controller.
Power Adjustment
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