The VB273 from Phoenix Datacom provides fast and robust redundancy switching for permanently installed satellite up-links and outside broadcast systems.

The VB273 provides full dual path redundancy for satellite signals with autonomous operation and deep signal analysis on both signal paths for the ultimate switching decision making.


Key features include:

  • 2:1 redundancy switching based on built-in monitoring of incoming satellite signals

  • Monitoring features VB120 included making this a switch &  probe combined into one

  • IF signal inputs: 75 ohm female BNC

  • IF signal output: 75 ohm female BNC

  • L-BAND signal inputs: 50 ohm female SMA

  • L-BAND signal output: 50 ohm female SMA

  • Supports 70/140MHz IF (VB273) and 950-2150MHz L-band (VB273-LBAND)

  • Robust bistable RF relays ensures state is preserved even in the event of a power loss

  • Passive loop-through so that signal is passed even if no power on unit

  • Capable of receiving DVB-S/S2 QPSK, DVB-S2 8PSK, DVB-S2 16APSK, DVB-S2 32APSK

  • Continuously monitor and switch on all TR 101 290 priority 1, 2 and 3 parameters (except Buffer Fill)

  • Possibility to customise alarming and switching template on all parameters

  • Independent alarm template and redundancy switching template to allow a parameter to be alarmed on while at the same time not resulting in a redundancy switch

  • Filtering capabilities on switching criteria to prevent short glitches to trigger a redundancy switch

  • Continuously monitor and switch on RF parameters.

Automatic mode, Manual mode and SuperLocal mode

Front panel controls with illuminated buttons offer local override control and a clear visual indication of the active switching path. The redundancy switch offers three distinct modes of operation making it suitable for any real-life operational challenges: Automatic mode, Manual mode and SuperLocal mode.

In automatic mode the VB273 system is fully independent and makes its own switching decisions based on the preset switching rules.

In manual mode the unit can be controlled from any overlying NMS system via the extensive XML-based Eii (External Integration Interface) or via SNMP triggers.

The VB273 also features a unique SuperLocal mode feature to deliberately cut off overlying NMS control for emergency manual override situations via the front button panel. All parameters can be controlled via the built-in web GUI. The web GUI also gives a visual overview of parameters used in switch decisions and system status.

The VB273 has multiple layers of redundancy. The 1RU chassis offers dual redundant power supplies and the VB273 switching card has magnetically latching relays to protect against signal disruption even during a complete loss of power.

The VB273 switch module actively taps off a small portion of the input signal from both inputs, converts it to L-band if required, amplifies it and then feeds it to the neighbouring VB272 DVB-S/S2 input module via two factory fitted loop cables. This allows monitoring and analysis to take place on both inputs simultaneously.

If any problem in any parameter is detected, preset rules apply and the unit will check the opposite input for the same failure and perform a switch if no failure is detected.

To avoid switch flapping a minimum switchback time can optionally be configured. All the parameters in the implementation of the TS 101 290 specification can be utilised as switching criteria.

The VB120 blade offers a bonus ASI input port with TS 101 290 analysis support that can be used for ad-hoc monitoring in addition to the two main ASI input ports used on the VB242 blade should the need arise.

The hardware is custom designed and built to telco-grade standards for maximum reliability and minimum maintenance. The complete redundancy solution consumes less than 25W of power. This drastically cuts on power consumption and air conditioning needs in installations.

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See Demonstration

To see this product in action, contact your Phoenix Datacom Account Manager, or fill out the form below for your demonstration, online, at your place of work, or in out state of the art Cyberlab at our operations in Buckinghamshire.

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