{"product_id":"rdl-tx-vcr","title":"RDL TX-VCR – Video Controlled Relay with BNC Loop-Through","description":"\u003ch2\u003eWhat is the RDL TX-VCR?\u003c\/h2\u003e\u003cp\u003eThe RDL TX-VCR provides a relay control signal based on the presence or absence of valid video. It can serve as a video-present detector or a video-loss detector.\u003c\/p\u003e\u003ch2\u003eHow does it work?\u003c\/h2\u003e\u003cp\u003e\u003cimg src=\"https:\/\/rdlnet.com\/wp-content\/uploads\/2024\/01\/tx-vcr.jpg\" alt=\"RDL TX-VCR Video Controlled Relay with BNC Loop-Through\" style=\"max-width:100%;height:auto\" loading=\"lazy\"\u003e\u003c\/p\u003e\u003cp\u003eThe module has one BNC video input and a LOOP OUT jack, so it can be inserted in a video line or installed at the end of a line with the supplied 75 ohm terminator. Detection is based on valid NTSC or PAL sync, ignores 50 Hz and 60 Hz hum, and works with signals as weak as 0.5 V p-p. Normally-open and normally-closed relay contacts close or open when valid video is detected, and a front-panel SYNC LED confirms detection. It runs from a wide range of ac or dc sources, including supplies such as the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ps-24ax\"\u003eRDL PS-24AX 24 Vdc power supply\u003c\/a\u003e. TX modules can be rack mounted with the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-tx-ra5\"\u003eRDL TX-RA5 racking system\u003c\/a\u003e or the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-tx-hra3\"\u003eTX-HRA3 rack mount\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eWhat are the key features?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVideo presence detection\u003c\/strong\u003e — The relay changes state when valid video sync is detected.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoss of video alerts\u003c\/strong\u003e — Normally-closed contacts let the module signal video loss.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBridging or terminated\u003c\/strong\u003e — Use the loop-through or the supplied 75 ohm terminator.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNTSC or PAL\u003c\/strong\u003e — The detector responds to valid NTSC or PAL sync signals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC or DC power\u003c\/strong\u003e — The module can be powered from many existing ac or dc sources.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RDL","offers":[{"title":"Default Title","offer_id":68025798328556,"sku":"TX-VCR","price":209.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/files\/tx-vcr.jpg?v=1793583964","url":"https:\/\/creationnetworks.net\/products\/rdl-tx-vcr","provider":"Creation Networks","version":"1.0","type":"link"}