Summary of Contents for Sigma MRX Series
- Page 1 SIGMA MRX SERIES ANALOG AND DIGITAL MID-SIZE MATRIX ROUTING SYSTEM OPERATORS MANUAL SIGMA ELECTRONICS, INC. P.O. BOX 448 1027 COMMERCIAL AVENUE EAST PETERSBURG, PA 17520-0448 (717) 569-2681 (MAR’ 03)
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Page 2: Unpacking
UNPACKING PHYSICAL INSPECTION Inspect your packages and equipment for any damage that might have occurred during shipping. If damage has occurred, save the shipping cartons. Report the damage to the shipping company and notify Sigma Electronics, Inc. STANDARD SHIPPING CONFIGURATION Each MRX system will be shipped in multiple cartons. -
Page 3: Table Of Contents
ANALOG AUDIO FRAME (MRX-24A, MRX-32A) ... B1 DIGITAL VIDEO FRAME (MRX-DVF)... B2 DIGITAL AUDIO FRAME – Balanced (MRX-TDAF) ... B2 DIGITAL AUDIO FRAME – Unbalanced (MRX-CDAF)... B3 POWER SUPPLY FRAME (MRX-PSF)... B3 MECHANICAL ... B3 SIGMA MRX SERIES OPERATOR’S MANUAL... -
Page 4: Installation And Overview
All frames and control panels are intended to be mounted in standard 19” EIA equipment racks. Prior to installing an MRX Series frame into a rack, the front panel must be removed. To remove the front panel, grasp the handles and pull firmly away from the frame. The front panel should completely detach from the ballstuds. -
Page 5: Interconnect Wiring
AUDIO FRAME - ANALOG The MRX Analog Audio Switchi audio signals having an input level of +26dBu or less in to Hi-Z ( INTERCONNECT WIRING... -
Page 6: Video Frame - Analog
VIDEO FRAME - ANALOG Video signals are connected to the video frame via BNC jacks on the rear panel. Connect the source video cables to the corresponding input BNCs on the rear of the frame. The MRX routing switcher must be the terminating device in the system. All video modules provide the video source with proper 75 termination. -
Page 7: Power Module
Frame placement within the racks will determine the required length of the bus cable. If custom length cables are required for a specific application, Sigma Electronics Inc can accommodate special cable requirements. POWER MODULE All power is supplied to the audio and video frames from the power frame through the supplied DC power cables. -
Page 8: Rear Supports
REAR SUPPORTS Depending upon the installation, it may be necessary to install the included rear mounting frame supports. These supports are designed to allow connection to rear rails positioned between 19 and 30 inches from the front supports. To install, follow the directions below. Rear Support Installation Instructions Refer to illustration below for reference letters. -
Page 9: Control Panel
To initiate the switching operation, data must be input into the SCI. One way to input this data is through a control panel. The MRX system is capable of utilizing many different control panels available from Sigma Electronics, Inc. The data from the control panels is transferred to the SCI via a communication line. References to this line are typically abbreviated to COMM line. - Page 10 APPENDICES...
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Page 11: Appendix A - Sci Protocol And Interface
INTERFACE INTRODUCTION The SCI serial interface card is the heart of the Sigma MRX Series mid-size matrix routing system. The SCI functions as the controller between the user and the switcher crosspoints. A switch can be generated one of two ways: by a remote control panel or by the serial port. -
Page 12: Rs232 Protocol Commands
APPENDIX A – SCI PROTOCOL AND INTERFACE RS232 PROTOCOL COMMANDS The following commands may be issued from a computer/terminal keyboard or other similar communication control device. This protocol is supported by various control systems provided by other control system manufacturers. Standard ASCII characters are used to create the command strings. - Page 13 APPENDIX A – SCI PROTOCOL AND INTERFACE COMMAND: MATRIX SETUP REQUEST The input/output matrix setup information of the system can be displayed. To do this, send the following command: ? {RETURN/ENTER} The SCI will respond with the following message: AVAILABLE OUTPUTS ARE: xxx AVAILABLE INPUTS ARE: xxx where 'xxx' is the number of inputs and outputs set at the SCI DIP switches.
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Page 14: Special Commands
{RETURN/ENTER} The command for a condensed BCD status {RETURN/ENTER} For a detailed explanation of the byte sequence please contact Sigma Electronics software department. COMMAND: HALT DATA TRANSMIT commands The SCI supports the XON/XOFF protocol. This is a method, through software, of halting and resuming transmission of data. - Page 15 APPENDIX A – SCI PROTOCOL AND INTERFACE COMMAND: STORE SALVO Creating a transaction to be stored in a salvo is done exactly as a regular transaction except the salvo symbol is the leading character. The following example will store this transaction in salvo 2 (@): @A10C3O19 {RETURN/ENTER} This is a split mode transaction stored in...
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Page 16: Rs422/485 Protocol Commands
APPENDIX A – SCI PROTOCOL AND INTERFACE @ZB {RETURN/ENTER} The example above for salvo 2 (@) will erase (Z) all level 2 (B) entries for each output specified in the salvo. It is also possible to erase a level for a specific output within a salvo. -
Page 17: Serial Control And Mode Switches
APPENDIX A – SCI PROTOCOL AND INTERFACE SERIAL CONTROL AND MODE SWITCHES The system configuration DIP switches S2 and S3 are located on the front edge of the SCI-MRX printed circuit board. The power supply frame holds the SCI-MRX module. Remove the front panel of the frame to access the switches. The momentary push-button reset switch S1 is positioned next to S3. -
Page 18: Jumper Selection
APPENDIX A – SCI PROTOCOL AND INTERFACE JUMPER SELECTION RS-232 SELECTION JP2, 9 position jumper with header attached, factory default. RS-422/485 SELECTION JP1, 9 position jumper, move header from JP2 to this position for RS-422/485. J4, RS-422/RS-485 selector, factory default is RS-422 J5, Delete for RS-422 and RS-232 (factory default), Add for RS-485 J6, Delete for RS-422 and RS-232 (factory default), Add for RS-485 Reserved Function... -
Page 19: Pin 'D' Rs-232 Pin Assignment
APPENDIX A – SCI PROTOCOL AND INTERFACE 9 PIN 'D' RS-232 PIN ASSIGNMENT PIN # FUNCTION RECEIVE DATA TRANSMIT DATA DATA TERMINAL READY OUTPUT from SCI-MRX SIGNAL GROUND DATA SET READY READY TO SEND CLEAR TO SEND The Pin assignments noted are per the RS-232 standard. Although the standard defines the use of twenty five (25) Pins, only nine (9) are required for PC serial communications. -
Page 20: Rs-232C Wiring
APPENDIX A – SCI PROTOCOL AND INTERFACE RS-232C WIRING SCI-MRX 9 PIN 'D' SIGNAL DESIGNATION RECEIVE DATA (RXD) [INPUT] TRANSMIT DATA (TXD) [OUTPUT] DATA TERMINAL READY (DTR) [OUTPUT] SIGNAL GROUND DATA SET READY (DSR) [INPUT] READY TO SEND (RTS) [OUTPUT] CLEAR TO SEND (CTS) [INPUT] Although the RS-232C standard defines the use of 25 pins, only nine of those are needed for basic PC serial communications. -
Page 21: Appendix B - Specifications
APPENDIX B - SPECIFICATIONS SYSTEM CONTROL INTERFACE MODULE (MRX-SCI) Data Transmission System ...RS-232 & RS-422 Serial Port Baud Rate ...Up to 57.6 Kb baud Control Levels ...Four or eight Communication Line ...Coaxial, up to 2000 feet Control Panels ...Up to 64 on 2 Comm. Lines Number of Salvos ...Four, from Master Control Panel Protocol ...Simple ASCII, supports Xon/Xoff External Sync Reference ...Composite Sync or Blackburst... -
Page 22: Digital Video Frame (Mrx-Dvf)
DIGITAL VIDEO FRAME (MRX-DVF) Signal Type...SMPTE 259M Connectors ...75 Ohm BNC Inputs...32, single-ended, terminated, 800mV p-p Input return loss ...15 dB min. from 5 MHz to 270 MHz Equalization ...Auto, 750 feet, with Belden 1694A or equiv. Outputs ...32, 800mV p-p max. (+/-10%) Output return loss ...15 dB min. -
Page 23: Digital Audio Frame - Unbalanced (Mrx-Cdaf)
DIGITAL AUDIO FRAME – Unbalanced (MRX-CDAF) Signal Type...AES-3id 1995 Connectors ...75 Ohm BNC Inputs...32, single-ended, terminated, 1V p-p max. Input return loss ...15 dB min. from 0.1 MHz to 6.0 MHz Input impedance ...75 ohms from 0.1 MHz to 6.0 MHz Input cable length ...1000 feet maximum Outputs ...32, single-ended, 1V p-p max.