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Radio Design Labs TXAVX
TX-AVX Automatic Video Switch

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Radio Design Labs TXAVX

Switches to auxiliary video input upon loss of primary video input. Detects and alarms on loss of video.

The TX-AVX is the ideal choice in installations where automatic switchover to an alternate video source is needed when the primary signal is lost. The unique power supply input allows the TX-AVX to be powered from a wide variety of existing ac or dc power sources.

The TX-AVX has two video inputs and a single output. The detection circuit bridges the INPUT line. When a valid NTSC or PAL video signal is detected, the INPUT jack is connected to the OUTPUT jack. The output is designed to connect to a 75 ohm terminated load. In the absence of video input at the INPUT jack, the AUX INPUT jack is connected to the OUTPUT jack. The switching is accomplished by means of a high-quality RF relay. If power to the TX-AVX is interrupted, then the AUX INPUT jack is connected to the OUTPUT jack. The INPUT jack is 75 ohm terminated. The AUX INPUT is terminated when it is connected to the OUTPUT and is unterminated when it is not in use.

Video detection is based on valid sync signals. The TX-AVX responds to valid NTSC or PAL sync while ignoring 50 Hz and 60 Hz hum and related induction artifacts. The TX-AVX is able to detect signals as weak as 0.5 V p-p. When a valid signal is detected, the relay connects the INPUT to the OUTPUT, and provides a ground connection to the SLAVE terminal, permitting the module to be connected as a video-present detector. Use in conjunction with RDL® BZR Alert Modules for convenient and reliable notification of status change.

Features:

  • Automatic Switchover to a Secondary Video Source
  • Loss of Video Detection
  • Dry-Contact Relay Output
  • Detection of NTSC or PAL Signals
  • Operation from AC or DC Power

Typical Performance:

  • Inputs: BNC, Ground-referenced
  • Input Level: 0.5 V p-p video to 1 V p-p video
  • Output: BNC, Ground-referenced (Output must be terminated with 75 ohm load)
  • Slave Output: Switches to ground on valid input signal
  • Relay Contacts: Single-Pole/Single-Throw
  • Maximum Switching Power: 60 W (220 Vdc, 125 Vac, 2A)
  • Power Requirement: GROUND-REFERENCED, 12 to 33 Vdc or 12 to 24 Vac @ 100 mA

TMGR# TXAVX

Mounting Kit for STICK-ON, TX, or Rack-Up module
Radio Design Labs MB1-RDL
Mounting Kit for STICK-ON, TX, or Rack-Up module

Two mounting brackets mounts a STICK-ON, TX, or Rack-Up module to a flat surface.

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Mounting Kit for RU and TX Series
Radio Design Labs MB2-RDL
Mounting Kit for RU and TX Series

MB-2 pair mounts a RACK-UP or TX module above or below a surface.

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Kit to Mount ST, TX Series Modules on FP Panel
Radio Design Labs MB3-RDL
Kit to Mount ST, TX Series Modules on FP Panel

TX or STICK-ON Module fastens to MB-3 which slides into FP-RRA/H track.

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Mounting Frame for Stick/TX
Radio Design Labs SR4
Mounting Frame for Stick/TX

The SR-4 is a universal module chassis that can mount to a backboard, wall or nearly any other support. It provides mounting for 4 STICK-ON power amplifiers or 7 standard STICK-ON modules. TX ™ modules may also be mounted. There is ample ...

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Utility Chassis, Single
Radio Design Labs UC1
Utility Chassis, Single

The UC-1 is an ULTRASTYLE design tabletop chassis for mounting RDL modules and accessories. The front panel features a single RACK-UP mounting bay. The rear panel has an identical mounting bay and is supplied with matching filler panels. ...

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Din Rail Adaptor for TX Module
Radio Design Labs DRA-35T
Din Rail Adaptor for TX Module

The DRA-35T provides mounting for any RDL® TX or MAX TX module to a DIN rail. The unique design allows mounting TX modules in a rack, cabinet or anywhere else DIN rail mounting of TX modules is desired.

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Pole Mount Tray for RDL Module
Radio Design Labs PM-1T
Pole Mount Tray for RDL Module

The PM-1T is a tray that mounts above a projector using a standard (1.5" I.D.) round projector pole or any smaller round or rectangular pole. The tray accommodates up to two FP-PA20 Audio Power Amplifiers (for stereo operation) and two ...

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FP-PA20A and PS Pole Mnt Adptr
Radio Design Labs PM-1V
FP-PA20A and PS Pole Mnt Adptr

The PM-1V vertically mounts any FLAT-PAK series module to a standard (1.5” I.D.) round projector pole or to any smaller round or rectangular pole.

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19" Rack Adapter for TX Series
Radio Design Labs TXRA5
19" Rack Adapter for TX Series

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