Crystal Vision SW222 User Manual V1.4 Contents 1 Introduction 2 Operation Control modes Auto switching on missing input Frame-synchronised or immediate switching Status switching 2.1 Using control modes Independent channel selection Alternate channel selection 3 Installation 3.1 Rear modules and signal I/O...
Introduction 1 Introduction The SW222 is a 10-bit 2x2 Serial Digital switch. Each of two serial digital inputs can be switched to either or both of two outputs. Switching can be controlled separately or together, either from the board or from remote inputs.
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It is very compact with 6 modules fitting in a 1U frame and 12 modules in a 2U frame and 24 in a 4U frame. The unit plugs into the front of the rack frame, and the universal connection system allows a mixture of Crystal Vision modules to be used in the 1U/2U and 4U frames.
1 2 3 4 5 6 7 8 MODE AUTO ST 1 IN SW222 2 IN B2 PSU LOCAL IMM The SW222 front edge view Lever Function Down MODE Select control mode (see next table) A OUT Input 1 (mode dependant)
Crystal Vision Operation Control modes To provide maximum flexibility a number of different controls options are available. Piano switches 1-3 chose the control option as follows: - Function Mode Both channels selected by a single local piano switch Each channel selected by separate local...
If piano switch 6 (AUTO) is up, outputs A and B will automatically switch away from a missing input. The status outputs (‘a’ to ‘d’, depending on control mode) will indicate the actual status of the routing. If the missing input returns, the SW222 will revert to the selected routing.
Crystal Vision Operation 2.1 Using control modes Independent channel selection The four independent operational modes their switching options and GPI assignments are as follows: Each channel selected by separate local piano switches 1 2 3 Lever Function Down A OUT...
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Crystal Vision Operation GPIs When open (+5V) When grounded ‘a’ Control - Route Input 2 to Output A Control - Route Input 1 to Output A ‘b’ Status - Input 1 routed to Output A Status - Input 2 routed to Output A ‘c’...
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Crystal Vision Operation GPIs When open (+5V) When grounded ‘a’ Not used. Control (momentary action) – Route Input 1 to Output A. ‘b’ Not used. Control (momentary action) – Route Input 2 to Output A. ‘c’ Not used. Control (momentary action) – Route Input 1 to Output B.
Crystal Vision Operation Alternate channel selection The four ‘opposite selection’ or ‘alternate’ operational modes, their switching options and GPI assignments are as follows: Both channels selected by a single local piano switch 1 2 3 Lever Function Down A OUT...
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Crystal Vision Operation GPIs When open (+5V) When grounded ‘a’ Control - Input 2 routed to Output A. Control - Input 1 routed to Output A. Control - Input 1 routed to Output B. Control - Input 2 routed to Output B.
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Crystal Vision Operation Both channels toggled by single remote momentary switch 1 2 3 Lever Function Down A OUT Input 1 routed to Output A Input 2 routed to Output A Input 2 routed to Output B Input 1 routed to Output B B OUT Not used.
Indigo 4, 2, 1 and Desktop box rear connectors The Indigo 4 frame can accommodate up to 24 SW222 cards. The Indigo 2 frame takes up to 12 cards, six cards will fit in the Indigo 1 frame and 2 will fit in the Indigo DT Desktop box.
Reclocked ASI-compliant Serial Digital Output (channel 2). Rear module connections with RM38 The RM38 has the addition of bypass relays fitted to loop the input programme to the outputs should there be a catastrophic frame supply/mains failure or SW222 card removal. Indigo & FR-AV rear connectors...
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Reclocked ASI-compliant Serial Digital Output (channel 2). (SDI IN 2 loop on fail) SDI IN 2 Serial Digital Input channel 2. SW222 modification information for using the RM38 SW222 PCB Issue number Issue 2 No modification required Issue 3 No modification required...
Crystal Vision Installation 3.2 GPI connections Each slot has an associated set of GPI connections for remote control and external status outputs on the frame rear-panel remote connectors. For convenience, GPI lines are associated with reference codes ‘a’ to ‘f’ in the connector pin-out tables for each frame.
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Crystal Vision Installation 4U frame GPI connections GPI lines ‘a’ to ‘f’ of each card connect to one of eight rear remote connectors as follows: Slot no. ‘a’ pin ‘b’ pin ‘c’ pin ‘d’ pin ‘e’ pin ‘f’ pin 8 (1)
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Crystal Vision Installation GPI lines ‘a’ to ‘f’ of each card connect to one of four rear remote connectors as follows: Slot no. ‘a’ pin ‘b’ pin ‘c’ pin ‘d’ pin ‘e’ pin ‘f’ pin 8 (1) 9 (1) 18 (1)
PL3 (input 1) and PL4 (input 2) must be moved to the DVB-ASI position. With PL3 & PL4 in the DVB-ASI position and piano switch 6 up, the SW222 will automatically switch away from a missing DVB-ASI input.
MODE AUTO ST 1 IN SW222 LOCAL IMM 2 IN B2 PSU SW222 status LEDs The following table summarises the card edge LED functions and colours: Colour Meaning when lit 1 IN Green (top) Valid serial digital input detected input 1.
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Crystal Vision Problem solving Basic fault finding guide The Power OK LED is not illuminated Check that the frame PSU is functioning – refer to the appropriate frame manual for detailed information There is no video output Check that valid SDI or DVB-ASI input(s) are present and that any cabling is intact...
Crystal Vision Specification 5 Specification General Dimensions 100mm x 266 mm module with DIN 41612 connector Weight 135g Power consumption Inputs 2 x SDI /DVB-ASI 270Mb/s serial digital to EBU Tech 3267-E and SMPTE-259M DVB-ASI to EN 50083-9 Cable equalisation >200m Belden 8281 or equivalent (SDI).
Crystal Vision Specification GPI outputs Lamp drive Active low with pull ups and 0Ω series resistors (default) 330Ω series resistors may be used to drive LEDs (request when ordering) max current -300mA Ordering information SW222 2x2 SDI Switch. Suitable for SDI or DVB-ASI signals...
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Crystal Vision Specification Indigo DTS Desk top box with passive front panel fitted with Statesman CPU for up to two 2 modules Indigo 2-48V 48V 2U frame with passive front panel for up to 12 modules Indigo 1-48V 48V 1U frame with passive front panel for up to six modules...
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