The TX-VCR is the ideal choice in installations where a control signal is needed based on the absence or presence of valid video signals. The unique power supply input allows the TX-VCR to be powered from a wide variety of existing ac or dc power sources. The TX-VCR has one video INPUT and a LOOP OUT video jack. The detection circuit bridges a 1V video line. The TX-VCR may be inserted in a video line with the loop-through video output feeding a terminated load. It may alternatively be installed at the end of a video line by installing a 75 ohm terminator to the LOOP OUT video jack. The terminator is supplied with the TX-VCR. Video detection is based on valid sync signals. The TX-VCR responds to valid NTSC or PAL sync while ignoring 50 Hz and 60 Hz hum and related induction artifacts. The TX-VCR is able to detect signals as weak as 0.5 V p-p. When a valid signal is detected, the relay contacts close. Both a normally-open and normally-closed contact are provided, permitting the module to be connected as a video-present detector or as a video-loss detector. The front-panel SYNC LED lights when valid video is being detected. If a local or remote loss of video audible alert is needed, the TX-VCR may be wired to an RDL BZR.
Detect Video Presence
Detect Loss of Video
Bridging or Terminated Operation
Detection of NTSC or PAL Signals
Dry-Contact Outputs
Operation from AC or DC Power
Operating Temperature (Maximum):
131 F
Operating Temperature (Minimum):
32 F
Height:
1.40 in
Width:
1.20 in
Length:
3 inch
Inputs:
BNC, ground-referenced
Input Level:
0.50 V p-p video to 1 V p-p video
Outputs:
LOOP OUT, BNC, ground-referenced (Output must be terminated with 75 ohm connected load or with 75 ohm terminator supplied)
Control Output:
N/O or N/C relay contacts
Relay Contacts:
Single-pole/double-throw
Maximum Switching Power:
60 W (220 Vdc, 125 Vac, 2A)
Power Requirement:
12 to 33 VDC or 12 to 24 Vac, @ 75mA
We may request cookies to be set on your device. We use cookies to let us know when you visit our websites, how you interact with us, to enrich your user experience, and to customize your relationship with our website.
Click on the different category headings to find out more. You can also change some of your preferences. Note that blocking some types of cookies may impact your experience on our websites and the services we are able to offer.
Essential Website Cookies
These cookies are strictly necessary to provide you with services available through our website and to use some of its features.
Because these cookies are strictly necessary to deliver the website, refusing them will have impact how our site functions. You always can block or delete cookies by changing your browser settings and force blocking all cookies on this website. But this will always prompt you to accept/refuse cookies when revisiting our site.
We fully respect if you want to refuse cookies but to avoid asking you again and again kindly allow us to store a cookie for that. You are free to opt out any time or opt in for other cookies to get a better experience. If you refuse cookies we will remove all set cookies in our domain.
We provide you with a list of stored cookies on your computer in our domain so you can check what we stored. Due to security reasons we are not able to show or modify cookies from other domains. You can check these in your browser security settings.
Other external services
We also use different external services like Google Webfonts, Google Maps, and external Video providers. Since these providers may collect personal data like your IP address we allow you to block them here. Please be aware that this might heavily reduce the functionality and appearance of our site. Changes will take effect once you reload the page.
Google Webfont Settings:
Google Map Settings:
Google reCaptcha Settings:
Vimeo and Youtube video embeds:
Privacy Policy
You can read about our cookies and privacy settings in detail on our Privacy Policy Page.