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Specifications:

• Input voltage range : 24 - 32VDC

• Input current : 2A maximum (depends on the model, the input voltage

• and load configuration)

• Output channels : 3

• Output Current : 350mA per channel (Alto350)

• 700mA per channel (Alto700)

• Control protocol : DMX512

• Address range : 1-506 through DIP switch

• Special addresses : 511 = Auto-running colour change

• 510 = All channels full on

• 509 = Channel 3 full on, channels 1 & 2 off

• 508 = Channel 2 full on, channels 1 & 3 off

• 507 = Channel 1 full on, channels 2 & 3 off

• DMX Terminator : Built-in, accessible through DIP switch position 10

• Dimming method : PWM

• PWM frequency : 160Hz

• Operating ambient temperature : -10°C to +40°C

• Storage ambient temperature : -20°C to +70°C

• Dimensions : 50 x 70 x 16 mm (PCB model)

• 58,2 x 96 22 mm (cased version)

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Ordering Codes:

When ordering or referring to a specific Alto product, please use the following product numbering:

• AUD-MD-350-P : 350mA, PCB version

• AUD-MD-350-C : 350mA, cased version

• AUD-MD-700-P : 700mA, PCB version

• AUD-MD-700-C : 700mA, cased version

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Application figures:

Every output channel can drive a maximum load of 15W.

So one should take care when designing the load configuration.

The load per channel can easily be calculated by adding the power consumption of each led connected to the specific channel.

To calculate the power of each led, one should take the forward voltage drop of the LED used and multiply this by the current going through it.

The forward voltage drop (VF) can be found in the data sheet of the LED in question. Please note that VF is always mentioned for a specific current through the LED.

Example 1, picture to the right: every channel has

a load of: ( 3,42V * 0,35A) * 8 = 9,58W

Example 2, picture in lower right corner:

Ch1, red leds: (2,95V * 0,35A) * 12 = 12,39W

Ch2, green leds: (3,42V * 0,35A) * 12 = 14,36W

Ch3, blue leds: (3,42V * 0,35A) * 12 = 14,36W

AUD-MD-700 driving 18 Luxeon K2 LEDs (Red, Green & Blue), 6 in series per channel, total power = 44,5W

AUD-MD-700 driving 36 Luxeon I LEDs (Red, Green & Blue), 12 in series/parallel per channel, total power = 41,1W