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Avenue 7455 HD/SD/ASI/310 Protection Switch

The 7455 module is a fail-safe, bypass protection switch for critical digital paths for broadcast or satellite applications. When a fault is detected in the primary input, and the secondary input is verified as good, the switch will activate, causing the secondary input to be switched to the module’s output. The 7455 includes a passive, fail-safe path that ensures there is an output even in the event of a total power failure.

The 7455 supports SD SDI, HD SDI, SMPTE 310M and DVB-ASI signals. Different types of signal testing (vetting) can be enabled on the 7455 and it will apply the tests according to the type of input that is present. This happens automatically and independently for the Primary and Secondary inputs. This means that the Primary input of the module could be HD SDI while the Secondary input is SD SDI. It is also possible to mix SDI, ASI and 310 signals, or receive the same standard on both the Primary and Secondary inputs.

The health of a high definition or standard definition video signal is determined by monitoring crucial parameters in order of increasing complexity; Timing Reference Signal (TRS), or a persistent loss of digital sync is tested first. Black, Embedded Audio and Freeze are also evaluated. Each test can be configured by the user. For example, the sophisticated Black Detector includes configurable parameters for black level threshold, pixel count, and duration time.

The Freeze detection system can be set to detect a clean or noisy source. Freeze Time sets the number of seconds for the 7455 to switch to the secondary input after a video freeze condition is detected in the primary input.

The health of an ASI or 310 signal is determined by monitoring digital clock lock, packet presence, and PID presence. The user can configure tests to define the minimum number of video packets and audio packets expected per second in a given service.

The switch can operate in two modes: automatic or nonresetting. In fully automatic mode, the 7455 will automatically switch back to the primary signal once it’s been restored. In the nonresetting mode, the secondary input remains routed to the output, even after the primary input has recovered.

The 7455 can be configured locally or controlled and configured remotely with Avenue 5050 Touch Screen, Avenue Tabletop Control Panel, Avenue Express Panel, or Avenue PC Software. Alarm generation, configurable user levels, module lock-out, and customizable menus are just some of the tools included in the Avenue control system.

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Description

  • Fail-safe Bypass Protection Switch for Critical Signal Paths
  • Use with HD, SD, ASI and 310 signals
  • Detects TRS, Black, Silence, Freeze for HD and SD Signals
  • Detects Signal Presence, Program Packets, PMT, PAT and PIDs with PID specific targeting
  • Detection specifics are user-programmable
  • Passes embedded audio
  • Alarm generation
  • Remote control and monitoring

Additional information

Control

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Video Input

HD SDI, SD SDI, ASI, SMPTE 310M
Video Output

HD SDI, SD SDI, ASI, SMPTE 310M
Video Processing

Protection Switch

Product Documents

Datasheet

Manual

Firmware

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