Alcad MS-551 Tech Note

Stereo modulators

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Technote 2: Setting up MS-551 Stereo Modulators

Vestigial Side Band TV Stereo Modulators generate an analogue TV channel from the audio

and video signals .MS-551 Stereo modulators comprise SAW filtering for maximum harmonic

reduction and true VSB response for adjacent channel operation.

Launch Amplifier

Power Supply

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 MODULATOR

WHEN PROGRAMMING

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.

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.

DO NOT ADD OR

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Page 1 • 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.
Page 2 The MS-551 modulators use an 8 pin Mini-Din cable that is available from your local ALCAD dealer. The mini DIN connection is located on the front of the modulator. Please look at picture below for example. In connecting the audio and video sources, two types of cables are available: •...
Page 3 To start programming the equipment, Press any button on the PS-003 programmer to turn on the programmer. The following screenshot below will appear. Firmware Version of Programmer programmer You must then select the model you are trying to program. Scroll left or right using the arrows until you get screenshot below...
Page 4 AUSTRALIAN DIGITAL/ANALOGUE FREQUENCY TABLE The next screen enables the type of Audio output that is to be selected stereo or mono...
Page 5 Once you have the desired audio output press transmit to ensure setting is sent to module, then press the down arrow to go to the next screen below. The “Audio level” screen enables manipulation of the Audio Sub-carrier from the modulator. Once you have the desired audio level set press transmit to ensure setting is sent to module, then press the down arrow...