Our Applications & Solutions

Audio,/Audio/Video Switch

Part Number:
R197A - R197AV



Digital Alert Systems’ Model R197A and Model R197AV products provide four (4) independent balanced stereo audio (197A) or balanced stereo audio and video/RF (R197AV) switches in a single 1 RU frame.

Each of the four independent relay channels contains a 2 x 1 (A/B) balanced stereo audio relay switch and a single-pole double-throw dry contact relay. The Model 197AV also includes a 2 x 1 (A/B) video/RF switch with fl at frequency response from DC to 1GHz.

Each independent relay channel is controllable by individual contact closures pulled to ground or a TCP/IP (Ethernet) LAN interface enabling each channel to be controlled locally or remotely over any TCP/IP network.


  • Four (4) independent balanced stereo audio switches – R197A
  • Four (4) independent balanced stereo audio and Video/RF switches – R197AV Only
  • Separate dry contact form “C” relay for each channel
  • Independent Relay channel activation by contact closure or network
  • Front panel status indicators when relay(s) are “active”
  • Detachable Screw Terminals for all audio, relay and power connections
  • Low power/ ground control inputs
  • Optional redundant power supplies (part number 427)
  • Direct network control by One-Net / One-NetSE / DASDEC™
  • Single rack-mounted chassis with all connections on rear panel

Product Files

Our Solutions

System Solutions

To grow your business – and your revenue – operators want the Knowledge, Assets and impartial technical guidance only a true Partner can deliver! From HFC and DOCSIS to x-PHYTM; from FTTx – GPON and RFoG to IPTV; from Linear Video to Multi-Screen; MHz best-in-class Technologies and Client Services will meet your goals while exceeding your expectations…

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Client Services

Too much on your plate?
Not enough hours in your day?

The next time you need, Linear Video or Multi-Screen, MPEG, DOCSIS or x-PHYTM, IP or RF resources to support the operation of Multi-Vendor, Multi-Technology products deployed in your HFC or FTTx network, MHz can help!

Choose from a customized package of remote “Fractional Engineering” hours you can use over an extended period of time; or our on-site Integration and Activation Services.

Both can offset your temporary work-load.

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