MECHANICAL
Standard Crystal Vision module 266mm x 100mm
Weight: 150g
Power consumption: 5 Watts
INPUTS
All 270Mbit to EBU 3267-E & SMPTE 259M
2 SDI inputs (1 and 2)
Cable equalisation >200m Belden 8281 or equivalent
Auto 625/525 line selection
OUTPUTS
Reclocked 270MMbit to EBU 3267-E & SMPTE 259M
A x 2 and B x 2 with rear module RM01; A x 3 and B x
4 with RM02; A x 4 and B x 4 with RM18
SWITCHING
Electronic switching between SAV and EAV at line 6 or
immediate switching if input missing (or immediate switching
selected on piano switch)
Switching can be controlled from the board edge or by
GPI
GPI control can be configured in six different ways,
allowing for direct connection to lamps and switches
in a number of different configurations, or to an automation
system
AUTO SWITCHING ON MISSING OUTPUT
The outputs of the switch can be configured to automatically
switch away from a missing input. The SW222 will return
to the previous selection when the input returns. An
input is considered missing if successive SAV and EAV
sequences are not detected for 3 consecutive line periods
GPI INPUT LEVELS
Active: connect to ground
Inactive: high impedance or 3 to 48 volts
Input current <500uA
GPI OUTPUT LEVELS
Lamp driver outputs, active low, with pull-ups
Links can be replaced with resistors to drive LEDs if
requested when ordered
Max current -300mA
Lamp drive is multiplexed with GPI inputs in some modes
to allow for four control inputs and four lamps. This
can be switched off
LED INDICATION OF:
Power supplies
625/525 input detected
Inputs present
Selected input for each output
PIANO SWITCH CONTROL OF:
Switch inputs
Auto switch away from missing SDI input
Immediate switch without waiting for correct line in
vertical interval
GPI control mode (see below)
Multiplexed GPI control/lamp drive status (only in modes
uing 4 GPI inputs)
GPI CONTROL MODES
Each output can be selected by: the position of a remote
switch, the repeated action of a single remote momentary
switch, the most recent of two remote momentary switches
or a local piano switch (GPI off)
Outputs A and B can be controlled separately, or output
B can be forced to be the opposite of output A
Tally outputs are provided to drive the lamps in all
switches
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