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Zektor CVS4 User Manual Supplement

Home theater switches, high definition component video switch
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Z E K T O R
H o m e T he at e r Swi tc he s
Digital Video / Component Video / Multichannel Audio
CVS4
(Supplement to the CVS4 User Guide)
High Definition Component Video Switch
Rev 2
07/25/2006

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Summary of Contents for Zektor CVS4

  • Page 1 Z E K T O R H o m e T he at e r Swi tc he s Digital Video / Component Video / Multichannel Audio CVS4 (Supplement to the CVS4 User Guide) High Definition Component Video Switch Rev 2 07/25/2006...

  • Page 2: Table Of Contents

    CVS4 Command Reference ..........10 The CVS4 K.I.S.S.™ Command Reference ....... . 10 Error Response Codes .

  • Page 3: Keep It Simple Serial™)

    P 1<CR> An example of a command that uses a bitmapped parameter is the “XS settings<CR>” com- will turn on the power of most Zektor devices. The spaces between the ‘P’ and ‘1’ are optional. mand, which is defined like this: Since commands consist of alpha characters only, there can never be a ‘P1’...

  • Page 4: Command Checksums And Crc-8 Checkcodes

    XS +4<CR> This is useful when communications with the Zektor device is being initialized and the state of the device is unknown. An <ESC> will clear the command buffer and reset all checksums and The will set the ‘IR’ bit, and have no affect on the others, and the new “XS” value would be: 13 CRC-8 checkcodes.

  • Page 5: Response String Checksums And Crc-8 Checkcodes

    Sent: Controller issues a query command. =LI 2,13;239<CR><LF> +<CR><LF> Received: Acknowledgment (or possible Error) Response. =LI 2,13<CR><LF> Received: Query Response. In the Master / Slave mode, the Acknowledgement or Error Response will always be the next re- CVS4 Component Video Switch CVS4 Component Video Switch...

  • Page 6: The Asynchronous Mode Of Operation

    Query Response internally (by looking for the ‘=’ character), and only passing through non-query responses. By using such a routine the above scenario becomes: LI?<CR> Sent: Controller issues command +<CR><LF> Received: Acknowledgement (or Error) Response CVS4 Component Video Switch CVS4 Component Video Switch...

  • Page 7: Cvs4 Command Reference

    “Front Panel Button Emulation” command. This section defines the K.I.S.S.™ commands that are available to the users of the CVS4. Note: The CVS4 has been designed as somewhat of a drop in replacement for one of our previ- The CVS4 Command Set ous products, the HDS4.2.

  • Page 8: Output Mapping

    = Currently selected channel. Response String: Note 1: If the CVS4 is off, this command will turn on power before selecting channel. Note 2: For backward compatibility with the HDS4.2, there is no space after the command in the response string.

  • Page 9: Front Panel Light Intensities

    The uses for this command are two fold: Note: This command exists for backwards compatibility with the HDS4.2, use the “LI” version of 1) The value returned from this command are the same values used to teach the CVS4 new IR this command in new designs.

  • Page 10: Set Learnable Ir Command Codes

    2) This command gives the controller full access to the CVS4’s IR sensor and Zektor’s IIR™ The value ‘ircmd’ refers to the IR commands that the CVS4 is able to learn, they are: algorithm. This is a very reliable way of adding IR control to any project. The IR codes generated IR Cmd Description by Zektor’s IIR™...

  • Page 11: Query Status

    When issue by the controller, it acts like an Exit key, used to exit setup modes, similar to pressing the Power Button, but it will be ignored if the CVS4 is not in the Control Settings setup mode.

  • Page 12: Extended Control Settings

    • Control Settings changes. setting the ‘IR’ bit to zero, keeps the CVS4 from responding to IR codes, however the front panel sensor remains operational and any codes received can still be queried for by using the “IR ?” Each of the above states can be selectively set to asynchronously transmit their state changes, command.
  • Page 13 CVS4 Command Reference (Cont’d) CVS4 Command Reference (Cont’d) transmissions, if the ‘AS’ bit is set to zero, then the CVS4 will operate solely in the Master / Slave mode regardless of the settings of this command. XE settings Set the enable bits to ‘settings’.

  • Page 14: Checksums And Crc-8'S

    The use of a checksums or CRC-8 checkcodes can increase the reliability of communications LI 3,2:114 between the controller and any Zektor device. IL 2,3:22 A checksum is calculated by using an unsigned byte as an accumulator, and adding together all KJ 2,3:145 the ASCII characters of a command string, up to and including the ‘;’...

  • Page 15: Source Code Example Of Calculating A Crc-8 Checkcode

    // else, just shift if (lcrc8 & 0x01) lcrc8 = ((lcrc8 >> 1) & 0x7F) ^ CRC8_POLY; else lcrc8 = (lcrc8 >> 1) & 0x7F; *crc8 = lcrc8; // return new CRC8 26 CVS4 Component Video Switch CVS4 Component Video Switch...
  • Page 16 This page left intentionaly (nearly) blank. This page left intentionaly (nearly) blank. 2 CVS4 Component Video Switch CVS4 Component Video Switch...
  • Page 17 Z E K T O R Z E K T O R 2675 Danielson Ct Suite 0 Poway, CA 206 5•7•250 www.zektor.com...

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