ESW201-B

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SDI 2x1 Emergency Switch

Cost effective emergency switching
Automatic switching on signal loss
GPI operator override
Power-fail bypass
Vertical interval switching

The ESW201-B is designed for applications requiring automatic
emergency switching capability in the event of signal loss. The
both SDV inputs are monitored and on loss of sync data, the
output is switched to the other input. If inputs are co-timed,
switching in the VBI achieves a seamless changeover.

The automatic switching feature can overridden by the operator through external connection
to the GPI, a simple switch is also provided on the front of the card to give users a quick
method of switching between inputs. A tally output indicates when the switch has occurred.

The program path is maintained, even in the event of a power failure, through the inbuilt
bypass relay.

Inputs:
2 x Serial Digital Video (270Mb/s) to SMPTE 259M (EBU Tech 3267-E),
referred to as input A (main) and B (secondary).

Outputs:
2 x re-clocked SDV (270Mb/s) on Program and Auxiliary output.
In the event of power failure to the unit a passive bypass relay connects input A
to the main program output. This can also be activated by a switch on the front
of the card.

Control:
2 x GPI inputs, ¡®AUTO¡¯ and ¡®SELECT
AUTO selects between automatic and manual switching modes.
In manual switching mode, SELECT switches between A and B inputs.
In AUTO switching mode, SELECT allocates A or B as the main input. This
input is monitored and if an invalid signal is detected, a switch occurrs.
A tally output is provided which indicates switch status.
On the 1U frame GPIs and tallies are wired to a 15 way high density ¡®D¡¯
connector and are included with the frame. On the 3U frame the -CB option is
required to provide the wiring of all card to two 25 way ¡®D¡¯ connectors.

Physical:
Eurocard size module for mounting in our 1U or 3U frames.

Power usage: 5W.

Frames:
Up to 6 modules will fit in a Microvideo 1U frame and 14 in a 3U frame.
They may be mixed with other Microvideo Series 200 boards in the same
frame.

Ordering:
ESW201-B 2x1 serial digital video emergency switch module.
EU-FRM1U 1U rack mounting frame for series 200 cards.
FL-FRM3U 3U rack mounting frame for series 200 cards.
-RP Redundant power supply (for both 1U and 3U frame, this option reduces
card capacity).
-CB Control Bus wiring for 3U frame.

Related products: ESW201, ESW201-S, RSW204, ASW201


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