Sigma MRX User Manual
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)
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 Sigm a
Electronics, Inc.
STANDARD SHIPPING CONFIGURATION
Each MRX system will be shipped in multiple cart ons. Video and Audio frames are shipped, each in their
own carton, with all modules installed. Power supply frames and the required power supplies are shipped in
the same carton. The accessory box (where this manual was located) containing all power interface cables,
accessories, connectors and documentation is shipped inside the power fr am e shipping carton.
Control panels ordered with a system are shipped in separ ate cartons. The external power supply for the
control panel is in the same carton as the control panel.
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SIGMA MRX SERIES
ANALOG AND DIGITAL MID-SIZE MATRIX ROUTING SYSTEM
OPERATOR’S MANUAL
TABLE OF CONTENTS
UNPACKING.......................................................................................................................................................................................i
PHYSICAL INSPECTION...............................................................................................................................................................i
STANDARD SHIPPING CONFIGURATION.................................................................................................................................i
TABLE OF CONTENTS..................................................................................................................................................................... ii
INSTALLATION AND OVERVIEW.................................................................................................................................................1
GENERAL OPERATING REQUIREMENTS................................................................................................................................1
ENVIRONMENTAL...................................................................................................................................................................1
Ambient temperature/Ventilation.............................................................................................................................................1
Humidity ..................................................................................................................................................................................1
Rack-mounting.........................................................................................................................................................................1
Audio Frame placement...........................................................................................................................................................1
POWER........................................................................................................................................................................................1
INTERCONNECT WIRING ...........................................................................................................................................................2
AUDIO FRAME - ANALOG.....................................................................................................................................................2
AUDIO FRAME - DIGITAL......................................................................................................................................................2
VIDEO FRAME - ANALOG.......................................................................................................................................................3
VIDEO FRAME - DIGITAL.......................................................................................................................................................3
POWER FRAME.........................................................................................................................................................................3
SYSTEM CONTROL INTERFACE .......................................................................................................................................3
POWER MODULE..................................................................................................................................................................4
REAR SUPPORTS ..........................................................................................................................................................................5
Rear Support Installation Instructions..........................................................................................................................................5
CONTROL PANEL.........................................................................................................................................................................6
APPENDIX A – SCI PROTOCOL AND INTERFACE...................................................................................................................A1
INTRODUCTION.....................................................................................................................................................................A1
Control Panel Interface..........................................................................................................................................................A1
Serial Control Interface....................................................................................................... .................................................. A1
Vertical Interval Switching ................................................................................................................................................... A1
SCI Configuration Switches..................................................................................................... ............................................. A1
Control Levels.......................................................................................................................................................................A1
RS232 PROTOCOL COMMANDS ........................................................................................................................................A2
SPECIAL COMMANDS..........................................................................................................................................................A4
RS422/485 PROTOCOL COMMANDS ................................................................................................................................. A6
SERIAL CONTROL AND MODE SWITCHES......................................................................................................................A7
JUMPER SELECTION............................................................................................................................................................. A8
9 PIN 'D' RS-422/485 WIRING................................................................................................................................................ A8
9 PIN 'D' RS-232 PIN ASSIGNMENT..................................................................................................................................... A9
RS-232C WIRING..................................................................................................................................................................A10
APPENDIX B - SPECIFICATIONS ................................................................................................................................................ B1
SYSTEM CONTROL INTERFACE MODULE (MRX-SCI).................................................................................................. B1
ANALOG VIDEO FRAME (MRX-24V, MRX-32V).............................................................................................................. B1
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
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INSTALLATION AND OVERVIEW
GENERAL OPERATING REQUIREMENTS
ENVIRONMENTAL
Ambient temperature/Ventilation
The MRX Switching System is designed to operate as specified when the ambient temperature is kept
within the range of 0°C to 50°C. Ventilation slots are provided on the fr ont and sides of the frames to assist
in the removal of the excess heat generated in t he nor mal operation of the units. These ventilation slot s
must not be blocked. Sigma Elect r onics will consider block ing of these slots, to be a custom, design
modification by the user. Custom design modifications void the Sigma Electronics warranty.
Humidity
Excessive humidity is harmful to electronic equipment . It is expected that the user will monitor and control
the relative humidity of the operating environm ent to maintain levels acceptable for the operation of this
equipment.
Rack-mounting
All frames and control panels are intended to be mounted in standard 19” EIA equipment racks. Prior to
installing an MRX Series f rame into a rack, the front panel must be removed. To rem ove the front panel,
grasp the handles and pull fir mly away from the f rame. T he front panel should completely detach from the
ballstuds.
Audio Frame placement
Due to the susceptibility of all audio circuitry to int er ference from power sources, the audio frame should be
located as far away from power sources as possible.
POWER
The MRX Switching System is designed to operate in all standard com mercial power environments
providing input voltage between 100VAC and 240VAC ± 10%. Voltages outside of this range may or may
not be tolerated by the equipment for a period of time but will, in any case, be considered a violation of the
warranty.
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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 t he 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 75Ω
termination. All active video outputs must be terminated in 75Ω. (BNC’s for outputs that are beyond the
configured matrix size do not need to be ter minated.)
The figure below shows the rear of a system configur ed as a 32 X 32 switcher. In this configuration,
the bottom two rows of BNC’s are used as t he video input connectors. T he 32 BNC’s that m ake up the t op
two rows are the video output connectors. All 32 output BNC’s need to be terminated. Use a 75Ω load to
terminate any unused output.
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To ensure that the SCI has power at all times, the control module is connected to every power
module output. This guarant ees that if any functional power supply module is installed, the SCI will have
power supplied to it. In addition, as long as there is m or e t han one operating power supply in the power
frame, the SCI has redundant power capability.
CONTROL BUS WIRING
The data bus connection is provided on the rear of each power frame at the SCI interface panel.
Ribbon cables with 15 Pin D-type connectors are used as Bus connectors. T hese Bus connectors are used
to transmit the control data f rom the SCI to all system f ram es. All systems will be provided with enough bus
cable assemblies to meet the req uirements of the system plus an expansion connector. Fram e placement
within the racks will determine the required leng th of t he bus cable. If custom leng th cables are req uired for
a specific application, Sigma Electr onics I nc can accom modate special cable requirements.
POWER MODULE
All power is supplied to t he audio and video frames from the power f rame through the supplied DC
power cables. Although all power modules are identical, some positions within the f rame are dedicated to
supply power to digital audio or video frames and other positions are to supply analog frames. For
applications where redundancy is requir ed, each power fr ame can hold two digit al and two analog assig ned
supplies.
After the power supply modules are plugged into t he power frame’s slots, install the power cables
into the rear of each supply and then connect to t he rear of the appropriat e fr ame, analog or digital. Analog
power cables are terminated with 4-pin connectors and digital power cables are terminated with 6-pin
connectors. Ensure t hat an analog power supply is used to supply an analog frame and a digital power
supply is used to supply a digital frame.
Additional DC input power connectors are provided on each analog and digital f rame. Redundant
analog or digital power supplies may be mounted in the power fram e and connected to the audio or video
frames via this connector. The redundant connector on the r ear of the analog f rame is labeled DC2- I. The
redundant connector on the rear of the digital frame is labeled DC 2.
*NOTE: If one analog video frame
cables as follows: Connect one 4-pin power supply cable from the power supply frame to the video frame
connector DC1-I. Connect one 4-pin power supply cable from the power supply frame to the audio f rame
connector DC1-I. Connect one 4-pin power supply cable from the video fr ame connector DC1-O
audio frame connector DC1-I
.
and two analog audio frames are used, connect the power supply
to the 2nd
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