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Switch Topology:

Switch Type:

Relay Type:

Number of Channels (Multiplexers and General Purpose Switches):

Matrix Configuration (Matrix Switches):

Technology:

Form Factor:

Operating System:

Maximum AC Switching Voltage:

Maximum DC Switching Voltage:

Maximum AC Switching Current:

Maximum DC Switching Current:

Maximum Real Switching Power per Channel:

Maximum Reactive Switching Power per Channel:

Operating Speed (Bandwidth):

Switch Operate Time:

Card is CE / FCC Certified?

Help with VME, VPX, and VXI Switches specifications:

General Switch Specifications Switches are used in industrial systems to connect test points or devices to instruments for the purpose of testing, measuring or monitoring the system.
   Switch Topology:      There are three main types of functional topologies for switches:
  • General-purpose
  • Multiplexers
  • Matrix
   Your choices are...         
   General Purpose       Simple switches that consist on independent and isolated relays or FET switches. They can connect one input to one output. 
   Multiplexer       A multiplexer connects one input to several outputs, or several inputs to one output. 
   Matrix       A matrix switch is an arrangement with several inputs and several outputs. Any number of inputs can be connected to any number of outputs. 
   Multiplexer/Matrix       Switch arrangement that can be connected as a multiplexer or as a matrix. 
   Other       Other unlisted switch topology. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Switch Type:       
   Your choices are...         
   Relay Switch       This switch uses a mechanical relay to rout or switch signals. It is used, among others, to switch or to scan high voltage signals.  There are three types: armature, dry-reed, and mercury-wetted switches. The relay type can be: SPST (single-pole (1-wire), single-throw), SPDT (single-pole (1-wire), double-throw), or DPDT (double-pole (2-wire), double-throw). 
   Solid State Switch       Solid-state switches use transistors (FETs and others) to route or switch signals. They are used in applications that require high-speed scanning of low-level signals (±10 V). Because they do not have any moving part these switches have a very long life. 
   RF Switch       RF switches are ideal for routing high-frequency signals. 
   Other       Other unlisted switch type. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Relay Type:      The type of the mechanical relays of the switch.
   Your choices are...         
   SPST       Single-pole, single-throw contact.  There are two types of SPST contacts:
  1. Form A:  normally open SPST switch.
  2. Form B:  normally closed SPST switch
 
   SPDT       Single-pole, double-throw relay.  It is also known as Form C type of contact. 
   DPDT       Double-pole, double-throw. 
   FETs       The switch is solid state and the relay is a field-effect transistor (FET). 
   Other       Other unlisted relay types. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Number of Channels (Multiplexers and General Purpose Switches):       Total number of switches in the board. This is the total number of paths that the switch provides, namely
  • For (1 x n) or (n x 1) multiplexers the number of channels is n.
  • For (n x m) matrices the number of channels is the product nm.
  • For general-purpose switches the number of channels is the total number of independent switches available in the board.
 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Matrix Configuration (Matrix Switches):      The input-output arrangement of the matrix. It is expressed as n x m.
   Your choices are...         
   4 x 4       4 x 4 matrix. 
   8 x 2       8 x 2 matrix. 
   8 x 4       8 x 4 matrix. 
   8 x 8       8 x 8 matrix. 
   10 x 2       10 x 2 matrix. 
   10 x 4       10 x 4 matrix. 
   16 x 2       16 x 2 matrix. 
   16 x 4       16 x 4 matrix. 
   16 x 8       16 x 8 matrix. 
   16 x 16       16 x 16 matrix. 
   Other       Other unlisted matrix configuration. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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System / Form Factor
   Technology:      See table at the end of this help module.
   Your choices are...         
   VMEbus       The original VMEbus specification (IEEE-1014-1987). Some features:
  • Asynchronous transfer
  • Addressing range between 16 and 32-bits
  • Data path widths: between 8 and 32-bits
  • Bandwidth: 40 MBps
 
   VME64       VME64 is a mechanical and electrical superset of the original VMEbus specification (IEEE-1014-1987). Some new features:
  • Asynchronous transfer
  • Addressing range between 16 and 40-bits
  • Data path widths: between 8 and 64-bits
  • Bandwidth: 80 MBps
 
   VME64x       The VME64 Extensions (VME64x) specifications were adopted in 1997 by the VITA (VMEbus International Trade Association) Standards Organization (VSO). This new standard adds new capabilities to the VME64 bus:
  • A new 160-pin connector family
  • 3.3 V power supply pins
  • Bandwidth: up to 160 MBps
  • Injector / ejector locking handles
  • Live insertion (hot-swap capability)
 
   VME160       VME160 is a version of the VME320 standard. The VME320 can transfer data from 320 MBps to over 500 MBps. The VME160 is the 160 MBps version. 
   VME320       VME320, a new modified VMEbus architecture, was developed in 1997 by Arizona Digital, Inc. Some features:
  • Allows synchronous data transmission
  • Bandwidth range: from 320 MBps to over 500 MBps
  • Also comes in 160 MBps version
 
   VPX       VPX (aka VITA 46) is an ANSI standard based on the VME bus with support for switched fabric using a high speed connector. 
   VXITM Compliant       VXITM (VMEbus eXtensions for Instrumentation) is a platform trademarked by National Instruments and a Consortium of other companies in order to define a multivendor instrument-on-a-card standard for industrial applications.  The VXIbus specifications combine the VMEbus with the popular GPIB to create a modular instrumentation platform to meet the needs of instrumentation applications. 
   Other       Other unlisted technology types. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Form Factor:      Card format is given in terms of (height x length). The height is expressed in units of 'U', and the length in mm (millimeters). The most popular heights are:    
  • 3U = 100mm
  • 6U = 233mm
  • 9U = 360mm    (Not part of the VMEbus specifications)
The VMEbus specifications recognize two types of cards: A single height board, also known simply as a 3U card, is 100mm x 160mm with one 96 pin DIN connector (the P1 connector) on the rear that plugs into the backplane.  A double height board, also known as a 6U card, is 233mm x 160mm and may have a second 96 pin DIN connector (the P2 connector). There are 9U boards in existence but they are not part of the VMEbus specification. For VXI systems the cards are referenced by assigning a letter to the card: Size A, Size B, Size C, etc. VME systems reference the card by naming the height and the length: 3U x 160mm, 6U x 340mm, etc. The front edge (width) of a typical board is 20mm wide and may incorporate connectors, indicator lights and switches. (See table at the end of this help module.)
   Your choices are...         
   3U x 160 mm (Size A)       Size A cards have a height of 100 mm (3U) and a length of 160 mm. 
   6U x 160 mm (Size B)       Size B cards have a height of 233 mm (6U) and a length of 160 mm. 
   6U x 340 mm (Size C)       Size C cards have a height of 233 mm (6U) and a length of 340 mm. 
   9U x 340 mm (Size D)       Size D cards have a height of 360 mm (9U) and a length of 340 mm. 
   9U x 400 mm       Cards have a height of 360 mm and a length of 400 mm.  
   Other       Other unlisted form factor. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Tables:         
   VMEbus Data transfer Speeds      

VMEbus Data Transfer Speeds

Bus

Maximum Speed

VMEbus

40 MBps

VME64

80 MBps

VME64x

160 MBps

VME160

160 MBps

VME320

320 to over 500 MBps

 
   Card Form Factors (Sizes):     

VME / VXI Card Form Factors (sizes)

Height

Length (mm)

VXI Name

VME Name

3U

160

Size A or 3U x 160mm

3U (Eurocard)

6U

160

Size B or 6U x 160mm

6U (Eurocard)

6U

340

Size C or 6U x 340mm

6U x 340mm

9U

340

Size D or 9U x340mm

9U x 340mm

9U

400

9U x 400mm

9U x 400mm

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Operating System Support
   Operating System:       
   Your choices are...         
   DOS       Disk operating system (DOS®) is a command-line operating system developed by Microsoft Corporation. 
   Windows® 95/98       Operating system developed by Microsoft Corporation. 
   Windows® NT       Operating system developed by Microsoft Corporation. 
   Windows® 2000       Operating system developed by Microsoft Corporation. 
   Windows® XP       Operating system developed by Microsoft Corporation. 
   Linux®       An open-source implementation of UNIX used on many platforms, including Intel-based PCs, Macintosh, SPARCTM workstations, etc. Linux® is a registered trademark of Linus Torvalds. 
   SolarisTM       SolarisTM is a Unix-based operating environment that includes the SunOSTM operating system.  Solaris and SunOS are trademarks of Sun Microsystems. 
   QNX®       QNX® is a microcomputer operating system which is especially useful for controlling real-time operations. This includes things like assembly lines, position monitors, chemical plants, and industrial robots. 
   VxWorks®       A real time operating system (RTOS) from Wind River Systems. 
   LynxOS®       LynxOS® is a real-time operating system (RTOS) based on the open source Linux OS.  Developed by LynuxWorks, it is used extensively in embedded systems. 
   None       The device comes without any operating system support. 
   Other       Other unlisted operating system such as MAC OS, RTX, Embedded NT, Embedded Linux, pSOS+, etc. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Electrical Specifications
   Maximum AC Switching Voltage:       The maximum AC voltage (signals) that the switch is capable of switching. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Maximum DC Switching Voltage:       The maximum DC voltage (signals) that the switch is capable of switching. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Maximum AC Switching Current:       The maximum AC current that the switch is capable of switching and still achieves full rated life. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Maximum DC Switching Current:       The maximum DC current that the switch is capable of switching. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Maximum Real Switching Power per Channel:       The maximum power in watts that the switch is capable of switching. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Maximum Reactive Switching Power per Channel:       The maximum signal power in VA (Volt-Ampere) that the switch is capable of switching. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
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Other Specifications
   Operating Speed (Bandwidth):       The maximum switching frequency supported. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Switch Operate Time       The time it takes to make contact. 
   Search Logic:      All matching products will have a value less than or equal to the specified value.
   Card is CE / FCC Certified?       The card conforms with the U.S. requirements of the Federal Communication Commission (FCC) and with the European CE Marking (Conformite Europeene or European Conformity) system, which is helpful for exports to the countries of the European Economic Area (EEA). 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
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