User's Manual

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Long Range Wireless Applications

USER’S MANUAL

900 MHz Audio / Video Transmitter

Model No. AVT900-3A

Product Description

Model AVT900-3A from Applied Wireless, Inc. is a high quality transmitter designed to

broadcast standard NTSC or PAL video signals, along with line-level audio signals, to an

appropriate receiver (such as Applied Wireless Inc.’s model AVR900-3). Conforming to

FCC Part 15 requirements for unlicensed use, Model AVT900-3A will transmit over

distances up to 750 feet.* The range may be increased substantially through the use of a

directional antenna (such as a flat panel or yagi) at the receiver.

The AVT900-3A transmitter provides three user-selectable channels of operation to

enable simultaneous operation of multiple transmitters in a common area. The transmitter

incorporates precise FM modulation and sophisticated filters to ensure stable,

interference-free high quality color or B/W video plus audio reception.

The AVT900-3A transmitter is housed in a small yet rugged aluminum extrusion

enclosure (dimensions: 3.25”W x 2.5”L). An AC power converter (12VDC) is supplied,

along with RCA phono-type video and audio cables, as well as a combination multi-

conductor power/audio/video cable assembly, for connection to video and audio sources.

The AVT900-3A transmitter is well-suited for many diverse applications, including

distribution of AV entertainment content throughout a building, commercial and

industrial surveillance, monitoring, security, access control, etc.

Using the AVT900-3A in Non-Stationary Applications

If the AVT900-3A is to be used in an application in which it will be moving while

broadcasting (such as with a hand-held video camera, for example), it is strongly

suggested that the Applied Wireless Diversity Receiver (model DAV900-3) be utilized.

This advanced multi-antenna receiver will minimize the effects of multipath interference

to provide more stable video images and audio reproduction. The improvement in

performance is especially noticeable when the distance between the transmitter and

receiver is extended and/or obstructions exist between them.

* Unobstructed, straight line-of-sight range, when used with the transmitter’s standard quarter-wave

antenna (included).

Summary of content (5 pages)

PAGE 1
Long Range Wireless Applications USER’S MANUAL 900 MHz Audio / Video Transmitter Model No. AVT900-3A Product Description Model AVT900-3A from Applied Wireless, Inc. is a high quality transmitter designed to broadcast standard NTSC or PAL video signals, along with line-level audio signals, to an appropriate receiver (such as Applied Wireless Inc.’s model AVR900-3). Conforming to FCC Part 15 requirements for unlicensed use, Model AVT900-3A will transmit over distances up to 750 feet.
PAGE 2
Table 1 Specifications Operating Frequency Channel 1 Channel 2 Channel 3 RF Output Power Operating Voltage Operating Current Video Frequency Response Signal to Noise Ratio FM Deviation (@ 1V P-P input) Differential Gain Error Differential Phase Error Harmonic Suppression Antenna Output Impedance Operating Temperature Range Storage Temperature Range 907 MHz 915 MHz 923 MHz 1 mW (0 dBm) 7.5 to 18VDC 65 mA 0.5 – 5.
PAGE 3
Figure 1 - Front Panel If two AVT900-3A transmitters are to be used simultaneously in a common area (so as to broadcast two different audio & video sources), set one unit to Channel 1 and the other unit to Channel 3. It is not advisable to attempt to use three units simultaneously.
PAGE 4
CAUTION: Do NOT apply power to the AVT900-3A unless the supplied antenna is attached to its mating jack on the front panel. Powering the transmitter without an antenna may result in failure of the transmitter’s RF output device and void the warranty. To use the supplied power converter, insert its 2.1mm plug into the DC IN jack on the transmitter’s rear panel (refer to Figure 2). Plug the converter into a live 120VAC outlet.
PAGE 5
INSTRUCTION TO THE USER (required by the FCC) This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.