Alcad MS-551 Tech Note

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

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.

SPECIFICATIONS

Frequency range output of modulators 46MHz - 862MHz

Operating temperature of Modulators - 10ºC --- +65ºC

Output Level Adjustment 15dB

TYPICAL LAYOUT FOR MS-551

IMPORTANT LAYOUT POINTS

Diagram above shows you may connect up to 10 modules plus the launch amplifier using the FA-310 power supply. This rule ONLY applies to the use of MS-551 modulators.

For optimum results installers

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:

• CD-003 (cod. 9120098) Stereo, with a miniDIN to SCART (EuroConnector) connection.

• CD-113 (cod. 9120094) Stereo, with a miniDIN to RCA connection.

1.0 Programming of the Modulator

To program the modulator, 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.

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

You will then need to press the up arrow and you will then see the screen

“Table channels B/G CCIR“on the programmer screen. This can be seen below

Press the left arrow once so that you can see the screen shot as below “Table

channels frequency”.

Press the arrow down screen.

once which will take you to “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

Once you have the desired output frequency press transmit and you will see the PRG LED on the processor you are programming flash twice. This indicates it is receiving the settings from the programmer. Now press down arrow the next screen below.

to get to

AUSTRALIAN DIGITAL/ANALOGUE FREQUENCY

TABLE

The next screen enables the type of Audio output that is to be selected stereo or mono

Once you have the desired audio output press transmit sent to module, then press the down arrow

to ensure setting is

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 setting is sent to module, then press the down arrow below.

to ensure

to go to the next screen

The “Video level” screen enables manipulation of the Video-carrier from the modulator. Once you have the desired video level set press transmit setting is sent to module, then press the down arrow below.

to ensure

to go to the next screen

The “V/A ratio” enables 12dB or 16dB ratio settings, which is the difference between the Video to Audio carriers. Once you have the desired V/A ratio set press transmit to ensure setting is sent to module.

The modulator 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.