MECHANICAL
Standard Crystal Vision module 266mm x 100mm
Weight: 135g
Power consumption: 5 Watts

VIDEO INPUTS
Two SDI or DVB-ASI inputs (1 and 2)
270Mbit to EBU 3267-E and SMPTE 259M and DVB-ASI to EN 50083-9
DVB-ASI to EN5008 3-9
Cable equalisation >200m Belden 8281 or equivalent
Auto 625/525 line selection

VIDEO OUTPUTS
Two independent ports with up to four buffered outputs of each, depending on the frame rear module fitted
Outputs available with RM01: SDI/ASI A1 and SDI/ASI A2; SDI/ASI B1 and SDI/ASI B2
Outputs available with RM02: SDI/ASI A1, SDI/ASI A2 and SDI A3; SDI/ASI B1, SDI/ASI B2, SDI B3 and SDI B4
Outputs available with RM18: SDI/ASI A1, SDI/ASI A2, SDI A3 and SDI A4; SDI/ASI B1, SDI/ASI B2, SDI B3 and SDI B4
Outputs available with RM38: SDI/ASI A1 (relay bypass protected) and SDI/ASI A2; SDI/ASI B1 and SDI/ASI B2 (relay bypass protected)
Reclocked 270Mbit SDI to EBU 3267-E and SMPTE 259M and DVB-ASI to EN 50083-9

RELAY BYPASS PROTECTION
The RM38 rear module provides relay bypass protection. An electromechanical relay switch needs power to hold the switch in one state and will revert to the other state (board bypass) on loss of power. It prevents signal loss by mechanically connecting the inputs of the SW222 to its outputs on complete frame power failure or board removal. Input 1 is connected to main output 1 and input 2 is connected to secondary output 2

DELAY THROUGH BOARD
20ns

SWITCHING
Electronic switching between SAV and EAV at line 6 (625 line) or line 10 (525 line) 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 switch 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 three consecutive line periods

GPI INPUT LEVELS
Active pull to ground, pulled up to 5V through 10 kohm

GPI OUTPUT LEVELS
Open collector transistor 30V, max current -300mA. Links can be replaced by resistor to drive LED if requested when ordered. Pulled up to 5V through 10 kohm (diode protected)

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 next section)
Multiplexed GPI control/lamp drive status (only in modes using four 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
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