ESW201-S

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SDI 2x1 Synchronising Emergency Switch

The ESW201-S is designed for live applications giving automatic
emergency switching capability in the event of signal loss. By
synchronising the timing of the two inputs with a reference, the
ESW201-S will switch seamlessly between inputs with
no disruption to transmitted picture.

In the event of the loss of the main input signal or of valid sync pulses, the ESW201-S
switches automatically during the vertical interval (on line 6 in 625).
The automatic switching feature can overridden by the operator through external connection
to the GPI. A tally output indicates when the switch has occurred. The program path is
maintained, even in the event of a power failure, through the inbuild bypass relay.

Inputs:
2 x Serial Digital Video (270Mb/s) to SMPTE 259M (EBU Tech 3267-E).
1 x Analogue video (PAL/NTSC), 1V into 75R (optional internal termination)

Output:
2 x 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:
In ¡°Manual¡± switch mode a closing contact to ground on the GPI input causes a
switch to input B.
In ¡°Auto¡± switch mode the card will switch to input B when the video on input A
becomes invalid. In Auto mode switching can still be activated by the external
GPI input.
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.

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-S 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-B, HDS201, HDS201-S, RSW204, ASW201
                   

 
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