Description
The TX-AVX is a 2×1 automatic BNC video switcher designed to provide seamless switchover between a primary and auxiliary composite video source. It continuously monitors the primary INPUT for valid NTSC or PAL sync and switches to the AUX INPUT automatically when the primary signal is lost. The unit uses a high-quality RF relay to ensure a clean mechanical connection and reliable signal routing.
Key features include detection of valid video sync, support for both NTSC and PAL formats, and a dry-contact slave output for external alerting. The module detects signals as low as 0.5 V p-p and tolerates input levels up to 1 V p-p. It also ignores 50 Hz and 60 Hz hum and related induction artifacts to reduce false switching events.
Technical performance is centered on reliable sync-based detection and relay switching. The INPUT jack is 75 Ohm terminated and the OUTPUT is designed for connection to a 75 Ohm load. Relay contacts are single-pole/single-throw and the maximum switching power is 60 W rated at 220 Vdc, 125 Vac, 2 A. A SLAVE terminal provides a ground connection when a valid input is present so the unit can function as a video-present detector.
Connectivity is straightforward with BNC video connectors for INPUT, AUX INPUT, and OUTPUT, all ground-referenced. The AUX INPUT is terminated only when switched to the OUTPUT and remains unterminated when not in use. The SLAVE terminal provides a dry-contact style interface for integration with RDL BZR Alert Modules or other monitoring systems.
Common applications include security and CCTV systems where automatic failover is required, broadcast monitoring racks for backup source selection, and AV installations that require unattended source supervision. The unit is particularly useful where uninterrupted video continuity and simple relay-based notification are needed. It is compact and suitable for distributed equipment closets or camera junction boxes.
Installation and power options are flexible – the TX-AVX is ground-referenced and accepts 12 to 33 Vdc or 12 to 24 Vac at 100 mA. The module operates in ambient environments from 0 C to 55 C and ships in a compact cardboard box sized 2 x 2 x 4 in. Its relay-based switching and simple BNC wiring provide a low-maintenance solution for professional AV and security deployments.
Free Ground Shipping
We offer free ground shipping on every purchase of $300 and more for US and US territory. Please choose "Free Ground Shipping (UPS/USPS)" option at checkout.
UPS Ground
UPS provides up-to-date tracking information. Ground service takes anywhere from 2-7 working days for delivery depending on destinations. UPS Ground does not deliver on Saturdays, Sundays or Holidays.
USPS Priority Mail/USPS Express Mail
For all shipments shipped via USPS, we offer 'DELIVERY CONFIRMATION' number with each package. Difference between tracking number provided by UPS vs USPS Delivery Confirmation number is: Delivery Confirmation status is updated when the delivery has been made or when the package has made it through major USPS stations.
Air Shipment
Air shipments, Overnight, 2nd day and 3 day select methods offer guaranteed delivery time for your shipment. If you are in hurry or in need for the items on schedule, select one of these methods. Up-to-date tracking information is provided with each Air Shipment. AVProSupply has the right to choose between Air shipments to meet or reduce delivery time. For guaranteed delivery of multiple items with expedited shipping, please contact our customer service representative for personalized assistance to get your items delivered to you when you need them.
International Customers
We offer shipping via USPS/UPS for our international customers. You can find different shipping options during checkout.
Most items ordered from AVProSupply will be shipped out from our California Warehouse. Will-Calls are only allowed with Appointment Only - Please call Customer Service to set one up between the hours of 9am to 6pm PST.
We Offer A 30-Day Money Back Guarantee:
Our main goal is to ensure your complete satisfaction with our service and products. If, for any reason, you are not 100% satisfied with your purchase, you can return it within 30 days of the purchase date for a full refund. Our 30-day money back guarantee applies to all of the products we sell, except for: TVs and monitors 20" and larger, Special Order merchandise, or any item indicated as non-returnable. Shipping is not refundable. Prior to returning your purchase, a Return Merchandise Authorization (RMA) number will be provided to you.
Refunds:
Refunds on returned items will be issued in the same payment form as received from the customer at the time of purchase. Once we receive the product and it passes inspection, we will credit your account. Please allow 3 - 6 business days for a credit to appear on your account.
Exchanges:
If the item was sent back to us for an exchange, please allow 3 - 5 business days for the replacement to be processed.
No Returns/Exchanges on the following:
- TVs and monitors 20" and larger
- Special Order merchandise
- Any item indicated on the website as non-returnable
For more information see our official Return Policy
