Adder AV200 Series Point to Multipoint 8-way Extender w/ serial (transmitter only)


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The Adder AdderLink ALAV208T (transmitter only) is an audio video extender that delivers high resolution crystal clear video and CD quality digital stereo audio across installations up to 2000ft. It has full RS232 support video display panels that can be controlled and interrogated remotely.

The ALAV208T is supplied complete with Adder DM (Display Manager) software. This advanced application makes controlling VDU power, video and audio possible from the transmitter, as well as allowing you to interrogate video panel status and dynamics. Due to Adder's 'Open Architecture' policy, you can still use any 3rd party signage control system with the ALAV208T.

Adder ALAV208T Back
Adder ALAV208T Back

Adder ALAV208T Features

  • Crystal clear digital audio quality at 44.1kHz Stereo
  • Crisp, sharp, fully saturated video quality even at 1000ft
  • Resolution up to 1600x1200@60Hz
  • Compact size
  • Compact rack-mountable chassis for large installations
  • Receiver units with fully adjustable de-skew ensuring maximum video quality
  • Cascade transmitters to support up to 128 VDUs from a single source
  • Dual video/audio output on the receiver supports back to back monitors applications

Adder ALAV208T 8-Way DiagramAdder ALAV208T Diagram Old
Adder ALAV208T Diagram

ALAV208T-US Package Includes

Adder ALAV208T Package Contents

  • (1) ALAV208T Local (Transmitter) Unit
  • (1) PSU-ALAV-IEC IEC-style power supply and power cord
  • (4) Stick on rubber feet
  • (1) CD with skew test pattern and documentation
  • (1) 2-Year Limited Warranty & Lifetime Support

Note: the rack panels are not included and need to be purchased separately as required.

AV 200 Series Resources

Adder ALAV200 Manual Screenshot Adder ALAV200 Datasheet (PDF)
Adder ALAV200 Manual (PDF)

ADDER Extension & Digital Signage (PDF)

Adder ALAV208T Specifications

Height 2.0 in. (5.1 cm)
Width 7.3 in. (18.5 cm)
Depth2.5 in. (6.5 cm)
Temperature Tolerance32 to 104F (0-40C)
Humidity Tolerance5 to 60% non-condensing
Operating Voltage100-240VAC
Power Frequency50-60Hz
Usage5VDC at 500mA
PowerPowered by an external 5.3V DC, 2A power supply with IEC power cable connection.
AudioTransmitted as digital signals to ensure high fidelity and low noise levels. Phase locked sampling clocks ensure that there are no unwanted clicks when no sound is being played.
Video Resolutions 
1600 x 1280 At distances up to 650 ft. (200 m.)
1280 x 1024At distances up to 1000 ft. (300 m.)
Display Data ChannelDDC signaling is supported to enable the computer to communicate with the local monitor and thus configure its video card for optimal operation.
Display Management via RS232Included with ALAV208T, the Display Management Software gives users control and interaction with display devices over the integrated RS232 ports. This allows for bi-directional and automated communication with individual screens, groups of screens or all screens at the same time.
IndicatorsThe remote and local units are fitted with two indicators; red shows the presence of power into the module, green indicates the presence of a video input.
Cable EqualizationFinely adjustable cable equalization amplifiers enable the video sharpness and brightness to be independently adjusted using the dials on the side of the receiver units.
Spike SuppressionFitted with spike suppression circuits
Connectors1 x blue 15-pin high-density D-type female connector for video input, 1 x light green 3.5mm audio jack for audio input and 1 x 9-pin D-type female for serial input. 1 x blue 15-pin high-density D-type female connector for video output, 1 x light green 3.5mm audio jack for audio output and 1 x 9-pin D-type male for serial output or cascade to additional ALAV 204T or ALAV 208T. 8 x RJ45 connectors for CATx cable connections. 2.5mm DC jack for power adapter.
Approved Agency FCC class A, CE marked
Question: Can this transmitters signal be reproduced by an ALAV101R-US receiver?
Answer: Thank you for your inquiry. According to the manual, it is possible to connect the ALAV208T to a ALAV101R. However the following is stated:

'Module mixing - IMPORTANT
When necessary, the AV204T and AV208T modules can be used to link with AV100 receivers, however, the serial communications facilities must be first disabled using switch 10 on the AV204T/AV208T modules (see Switch settings for details)'

You might also be interested to know that the ALAV104T 4-port transmitter can be cascaded with additional AV104 transmitters to expand the number of available end points.

You can view the manual here:

The AV 100 series manual can be found here: