Sigma MRX Series Operator's Manual
Contents
1. Control Level Control Panel Type Handshaking Reserved Panel Scan S2 12 Levels 53 1 Panel Type S3 2 Handshaking S3 3 53 4 Panel Scan ON 8 ON Numeric ON Enabled Reserved ON Scan ALL OFF 4 OFF Alpha OFF Disabled OFF Scan Active NOTE 1 Fixed serial communications parameters are 8 Character bits 1 Stop bit No Parity NOTE 2 Synchronous mode switching occurs on line 10 in NTSC and line 7 in PAL when reference is supplied A7 APPENDIX A SCI PROTOCOL AND INTERFACE JUMPER SELECTION SERIAL PORT COMMUNICATION FORMAT 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 JP3 programming interface for U6 factory reserved 9 PIN D RS 422 485 WIRING PIN FUNCTION DIRECTION 1 Ground 2 2 Transmit A Output TX Data 3 Receive B Input RCV Data 4 Receive Common 5 N C 6 Transmit Common 7 Transmit B Output TX Data 8 Receive A Input RCV Data 9 Frame Ground Same as standard ANSI SMPTE 207M 1984 A8 APPENDIX A SCI PROTOCOL AND INTERFACE 9 PIN D RS 232 PIN ASSIGNMENT PIN FUNCTION DIRECTION 1 see 2 REC2. 0 1 dB 10 Hz to 30 KHz any level Ere A A cde ae eae P dc tie MESI 0 25 dB to 100 KHz Hum amp NOISE conste hm OC 90 dBu with 22KHz low pass filter Total Harmonic Distortion 0 0596 maximum worst case 24 dBu Crosstalk a 90 dB min below referenced channel 10Hz to 20kHz UMEN EP all inputs driven 6000 loads 110 dB typ fe nner Unity 0 2 dB 6000 termination atc sce eos ceil ise 3 Pin pluggable terminals APPENDIX B SPECIFICATIONS DIGITAL VIDEO FRAME MRX DVF Signal Type tere aed eee eet eph eee SMPTE 259M GOMMGGIONS eee ete uc etudes 75 Ohm BNC DEWPT Seta cee Sae EA 32 single ended terminated 800mV p p si eomm 15 dB from 5 MHz to 270 MHz EQUALIZATION ir eee ne bt Auto 750 feet with Belden 1694A or equiv UTS xen ep orte Ideo PE rane 32 800mV p p max 10 Output return IOSS cse o D bte tech 15 dB min from 5 MHz to 270 MHz Output DG offset cm c 0 0 V 0 5 V Rise and Fall time 0 4ns lt tr 1 50ns 20 to 80 rise time 0 4ns tf 1 50ns 20 to 80 fall time RAT ML LE M M IM E tr tf lt 0 5 difference of tr and tf lt 0 5ns OVOISIIOODs as fects rota etal qt dunt maximum 10 of total
3. In this command only the requested input Level A will change causing that level to breakaway from the other levels The A could actually be A B C D E F G or H These eight letters represent the control levels 1 8 respectively So an A would correspond to Level 1 a D would represent Level 4 and so on The Oxxx is the OUTPUT or destination number COMMAND SPLIT BxxxCxxxOxxx OR DxxxAxxxOxxx In these examples the inputs for two levels are assigned different sources but both will go to the same OUTPUT or destination Again it is not necessary to supply the leading zero in assigning source or destination numbers B17C03004 or B17C304 will both perform the same switch Order and number of levels does not matter Any combination of levels in any order is valid For example D09B21A2C1109 is valid sequence A2 COMMAND STATUS Any OUTPUT s status can be obtained by entering the following protocol sequence Sxxx RETURN ENTER The S represents STATUS and the xxx represents the one to three digit ASCII number of the OUTPUT Any leading zeros are optional Press RETURN ENTER to generate execution The SCI will respond with the following ASCII message Output xxx L1 xxx L2 xxx L3 xxx L4 xxx L5 xxx L6 xxx L7 xxx L8 xxx This will all print on one line on the terminal video screen The xxx will indicate the one to three digit ASCII number for the OUTPUT and all the sources for LEVEL 1 to 4 or 1 to
4. ELECTRONICS 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 Sigma Electronics Inc STANDARD SHIPPING CONFIGURATION Each MRX system will be shipped in multiple cartons 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 frame shipping carton Control panels ordered with a system are shipped in separate cartons The external power supply for the control panel is in the same carton as the control panel SIGMA MRX SERIES ANALOG AND DIGITAL MID SIZE MATRIX ROUTING SYSTEM OPERATOR S MANUAL TABLE OF CONTENTS Ambient temperature Ventilation Humidity Rack mounting 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 t
5. the SCI transmits an update of the transaction to all the system control panels In this way there is a positive feedback for each transaction Serial Control Interface The second method of control is through the serial port The SCI can support either RS 232 or RS 422 protocols Selection of RS 232 is obtained by placing the dual 9 Pin jumper on JP2 factory default To select RS 422 the jumper must be moved to JP1 Serial communications is achieved with very simple and straightforward ASCII commands The interrupt driven communications link will respond immediately whenever a command is issued from an external serial device When the command is received it is interpreted and executed The SCI will issue a response of OK to the sending device upon completion of each transaction If the command was invalid the SCI will transmit a The response can be disabled if required Vertical Interval Switching The SCI is capable of generating a vertical interval switch To do this a reference signal must be present at the REF IN BNC This signal can A1 be either a composite video signal 1 Vp p or a composite sync pulse 4vpp The SCI will use this reference to determine the vertical interval switch If no REF IN signal is present the SCI will execute the switch as soon as it is interpreted SCI Configuration Switches There are three switches located on the front on the SCI MRX circuit board S1 is a momentary push button
6. 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 2 9 RETURN ENTER The example above for salvo 3 erases Z the level 3 C input assignment for output nine 9 A command is available to erase a level within a range of outputs for a particular level ZA12 19 RETURN ENTER The example above for salvo 3 will erase Z all entries for level 1 A beginning with output twelve 12 through and including output nineteen 19 COMMAND EXECUTE SALVO A salvo can be executed immediately by choosing the proper salvo symbol and using the execute command IX RETURN ENTER The example above is the salvo 1 execute X command COMMAND PRESET SALVO The command to PRESET a salvo but not execute it allows the system to queue a system for an immediate preloaded switch upon the execute command P RETURN ENTER The example above for salvo 4 presets P and holds the salvo During a salvo preset condition no other salvo can be accessed Neither edits nor system transactions are permitted There are essentially only three options execute the salvo cancel the salvo or request a status This is true whether it is a command from the serial port or a control panel All other switch commands are ignored during a salvo preset A salvo preset has an internal timer of approximately 30 seconds If a preset salvo is not exec
7. 8 in an eight level system COMMAND STATUS ALL A global status can also be generated This will give the STATUS for all the active OUTPUTS By default those OUTPUTS not yet addressed will be indicated as having INPUT 01 selected SA RETURN ENTER The S represents STATUS and the A represents ALL As always press the RETURN ENTER key to execute the command The SCI will respond with the following L1 L2 L3 L4 L5 L6 L7 L8 OUT XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX XXX The current INPUT STATUS for all levels of each OUTPUT will be listed The number of outputs to which the SCI DIP switches are set see SCI DIP switch settings will limit the number of outputs displayed Anytime an invalid or incomplete message is sent to the SCI it will respond with an ASCII unless this response is disabled see N Y command This will occur for each group of invalid characters it receives The RETURN ENTER key is the delimiter between commands Therefore invalid characters will not cause a response until the RETURN ENTER key has been sent 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 wher
8. COMMECIOMS ii eese teer een enda 2 BNC for Comm Line amp External Sync tibet ina ate R O 9 Pin D for Serial Port ANALOG VIDEO FRAME MRX 24V MRX 32V Input Impedance 75Q terminated Input Level eased en oe orte ertet l 1 4V p p maximum Input CODD n e pee e at a DC Input Return 35dB minimum to 5MHz Input DG Offset eie dee meten nes 0 3V Tilt field and line eene 196 maximum Output Impedance 750 source terminated Output Level accent rote tre re e enero eot 1 4V p p maximum Output COMI seii eo paie as eer DC Differential Phase 0 15 4 43MHz 10 90 APL Differential Gain eee 0 1596 4 43MHz 96 10 90 APL Frequency 0 14 from DC to 25 MHz Bandwidth eere rece eterne 50 MHz Input Gain Variation lt 0 15 dB maximum Pro ci p PE E gt 40 dB below 1V 5 MHz Hum amp NOIBO co ert ro ROS et PR Ro ue tras 65 dB rms below 1Vp p CONNECT St TI buds BNC ANALOG AUDIO FRAME MRX 24A MRX 32A Input Impegdalce eter 30 KO balanced Input E6V6l ss ie cp EC ero EE ep n beris 24 dBu maximum Output Level ec e te ne ihe 24 dBu max into 6000 TTE 26 dBu max into high impedance Output Impedance s 1008 balanced Frequency
9. responses are sent This assures the fastest processing of a change request COMMAND DISABLE CONTROL PANELS It is possible to disable the remote control panels and give exclusive attention to the serial port for improved response time to incoming serial commands To halt the scanning of panels press PD CARRIAGE RETURN The response is Panels Inactive This will cause the polling and updating of any remote panels to stop This command is especially useful to improve SCI efficiency in systems where control panels are not used Also this command can be used to temporarily disable the panel scan execute time critical serial transactions and then re enable the panel scan with the next command COMMAND ENABLE CONTROL PANELS To re enable the control panel scan routines press PE CARRIAGE RETURN The response is Panels Active Now the SCI is fully functional again and the panels will be updated and polled as before Careful tailoring of programming will allow maximum efficiency in executing serial commands in those applications where execution time is especially critical COMMAND CONTROL PANEL STATUS The current control panel status can be determined by pressing PS CARRIAGE RETURN This will yield the response of Panels Active or Panels Inactive depending on the current state APPENDIX A SCI PROTOCOL AND INTERFACE SPECIAL COMMANDS There are several special commands available that should be used wit
10. the warranty 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 750 termination All active video outputs must be terminated in 75Q BNC s for outputs that are beyond the configured matrix size do not need to be terminated The figure below shows the rear of a system configured as a 32 X 32 switcher In this configuration the bottom two rows of BNC s are used as the video input connectors The 32 BNC s that make up the top two rows are the video output connectors All 32 output BNC s need to be terminated Use a 759 load to terminate any unused output OUTPUTS 1 32 Top 2 rows of BNCs INPUTS 1 32 Bottom 2 rov To ensure that the SCI has power at all times the control module is connected to every power module output This guarantees that if any functional power supply module is installed the SCI will have power supplied to it In addition as long as there is more than 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 B
11. EIVE DATA INPUT to SCI MRX 3 TRANSMIT DATA OUTPUT from SCI MRX 4 DATA TERMINAL READY OUTPUT from SCI MRX 5 SIGNAL GROUND N A 6 DATA SET READY INPUT to SCI MRX 7 READY TO SEND OUTPUT from SCI MRX 8 CLEAR TO SEND INPUT to SCI MRX 9 N C ate 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 Of those nine pins only seven are required for communication to the SCI when handshaking is required If handshaking is not required only three pins will be active There is no need to jumper the handshaking pins when unused Consult the control device manufacturer s data sheet to determine proper wiring PIN OUT O5 gt 8 7O 90 SCI MRX Serial Port A9 APPENDIX A SCI PROTOCOL AND INTERFACE RS 232C WIRING SCI MRX 9 PIN D SERIAL PORT SERIAL PORT PIN SIGNAL CONNECTIONS CONNECTIONS DESIGNATION COMM 1 DCE COMM 2 DTE 1 NIC N C N C 2 RECEIVE DATA RXD INPUT RXD OR TXD 3 TRANSMIT DATA TXD OUTPUT TXD OR RXD 4 DATA TERMINAL READY DTR OUTPUT CTS CTS 5 SIGNAL GROUND GROUND GROUND 6 SET READY DSR INPUT RTS RTS 7 READY TO SEND RTS OUTPUT DSR DSR 8 CLEAR TO SEND CTS INPUT DTR DTR 9 NIC N C N C Although the RS 232C standard defines the use of 25 pins only nine of those are needed for basic PC serial communications Of t
12. O 03 RETURN ENTER 1104 O 04 RETURN ENTER 1105 O 05 RETURN ENTER 1106 O 06 RETURN ENTER 1107 O 07 RETURN ENTER 1108 O 08 RETURN ENTER 1109 O 09 RETURN ENTER 1110 10 RETURN ENTER 11110 11 RETURN ENTER 1112 O 12 RETURN ENTER 1113 O 13 RETURN ENTER 11140 14 RETURN ENTER 1115 O 15 RETURN ENTER A16 B 64 O 16 RETURN ENTER No spaces are used between any commands This salvo command is set for Salvo 1 and switches inputs I one to fifteen 1 15 to outputs 0 one to fifteen 1 15 respectively The last step of salvo 1 performs a split switch of input level 1 A from source sixteen 16 and input level 2 B from source sixty four 64 to output O sixteen 16 The salvo command is finished with Return Enter The number of possible transactions in a salvo is equal to the number of outputs in the system You can only change each output once in any particular salvo Switch commands do not need to be in numerical order If multiple commands are entered for one output only the last command for that output will be visualized after the execution of the salvo 5 COMMAND SALVO STATUS ALL The status of a salvo can be examined by prefixing the status command with the salvo symbol ISA RETURN ENTER The example provided is for salvo 1 This example provides the status S for all outputs A The difference between a normal status check and a salvo status check is anytime a leve
13. Salvo symbols are as follows Symbol Keyboard Command Shift 1 Salvo 1 Shift 2 Salvo 2 Shift 3 Salvo 3 Shift 4 Salvo 4 Shift 5 Salvo 5 A Shift 6 Salvo 6 amp Shift 7 Salvo 7 Shift 8 Salvo 8 Shift 9 Salvo 9 Shift 0 Salvo 10 EAS SHIFT 1 through SHIFT 0 correspond to salvo 1 through salvo 10 When activating a salvo the first character in the command must be the salvo designator symbol l 96 8 7 or The Salvo stored as Salvo 10 will execute upon a closure applied to the EAS screw terminals on the rear of the master frame This provides an automatic response to an Emergency Alert System alarm 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 A10C3019 RETURN ENTER This is a split mode transaction stored in salvo number 2 SHIFT 2 change level 1 A to source ten 10 and level 3 C to source three 3 of output O nineteen 19 Multiple switches may occur upon a single salvo command This allows multiple input to output switches to be preloaded and then switch simultaneously upon the execution of the salvo A typical multiple output salvo would be entered like the following string of commands 101 O 01 RETURN ENTER 1102 O 02 RETURN ENTER 1103
14. Switching forced air cooling Removable Supply Model Name MRX PSU Max Removable Supplies 2 in non redundant configuration 4 in redundant configuration DO e dtes 2 per MRX PSU 8 total per frame DC Output Connectors eee 4 pin for MRX Analog 6 pin for MRX Digital DC Output Voltage 18VDC for MRX Analog Dual 18VDC for MRX Digital AC Input POW ects ocu t th oe bas 85W Supplying Maximum Load for MRX Digital Includes MRX DVF and MRX TDAF or CDAF 60W Supplying Maximum Load for MRX Analog Includes MRF V and two frames of MRF A 120W Supplying Max Load for MRX Analog amp Digital Operating 0 to 50 degrees Celsius MECHANICAL Switch and Power 1 RU 1 75 H x 19 W x 10 D Master Control Panel SYX amp SYX 3232 2RU 35 Hx19 Wx25 D Single Bus Panels 5 32 2RU 3 59 Hx19 Wx2 5 D Alpha Numeric ANX 1 RU 1 75 H x 19 W x 2 5 D Rapid Take Panel 32 1 RU 1 75 H x 19 W x 2 5 D B3
15. amplitude Serial Jitter en rre teres 500ps p p max RECIOCKING xtd Automatic Electrical ees dede eo te aee iis 11ns typical Operating 0 to 50 degrees Celsius DIGITAL AUDIO FRAME Balanced MRX TDAF Signal Type ei reg AES 3 1992 COLD Decio Sca io du dame trie e Re e 3 pin removable terminal block DUNS es er Sak ake tese gt e 32 differential terminated 7V p p max Transformer Coupled AES 3 1992 Input impedance een riter eos 110 ohms 20 from 0 1 MHz to 6 0 MHz Input cable length seo Eee 500 feet maximum at endende tere 32 differential 7V p p max 4 3Vp p typical Transformer Coupled AES 3 1992 Output 110 ohms 20 from 0 1 MHz to 6 0 MHz Output Rise and Fall 5ns tr 30ns 10 to 90 rise time 5ns lt tf lt 30ns 10 to 90 fall time Serial Data 3 072 Mb s max Fs 48 kHz max Serial Data 20ns p p max Reclocking FERME DES RD MOT E CERES Automatic Input common mode rejection 7V peak from DC to 20 kHz Output common mode 30 dB min below signal from DC to 6 MHz Electrica
16. d in the power frame and connected to the audio or video frames via this connector The redundant connector on the rear of the analog frame is labeled DC2 I The redundant connector on the rear of the digital frame is labeled DC 2 NOTE If one analog video frame and two analog audio frames are used connect the power supply 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 frame connector DC1 I Connect one 4 pin power supply cable from the video frame connector DC1 O to the 2 audio frame connector DC1 I 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 1 Prior to installation of the frame into the rack attach an extender bar A the flat piece with the countersunk holes at one end to each side of the frame using the four 4 supplied 48 32 undercut flathead screws B through the countersunk holes and into the threaded inserts in the side of the frame NOTE Undercut flathead screws must be used to provide adequate clearance and proper fit 2 Install the frame into t
17. d to the COMM Line as system requirements dictate Additional panels are added by installing BNC T connectors in the coax path Coaxial cable paths for either COMM 1 or COMM2 are recommended to be less than 2000 total feet This coaxial path should NOT be terminated in a 758 load m i 00 240 FIBVDE 100 240V SERIAL l J V J Fri 18VDC 18VDC Tl REF IN COMMI 2 A Electronics Inc APPENDICES APPENDIX A SCI PROTOCOL AND 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 Control Panel Interface On the rear of the main frame are two BNCs labeled COMM 1 and COMM 2 Coaxial control lines connect the COMM ports to the remote control panels Multiple control panels may be supported by the SCI The 64 different panel addresses allow each panel to have a unique polling address This prevents conflicts of transaction information during a poll between the SCI and a specific address The 5 systematically polls the control panel addresses to request transaction data When polled data present at the control panel is transmitted to the SCI via the coax cable The SCI interprets and executes the instruction After a panel is polled
18. e xxx is the number of inputs and outputs set at the SCI DIP switches COMMAND DISABLE RESPONSE Responses generated by the SCI can be disabled with the following command The command is CTRL N This will prevent all SCI responses No carriage return is required COMMAND ENABLE RESPONSE At any time the responses can be resumed The command is CTRL Y Again no carriage return is needed Please note this process differs from the XON XOFF routine In that case the responses are held in a buffer and then all pending messages are sent upon receiving the XON command In this case the messages are simply discarded and no record of them is kept In this way it is possible to tailor a program to allow only a status response but inhibit all other SCI messages COMMAND CLEAR ENTRY Whenever a wrong key is accidentally pressed or a command needs to be changed the current command can be cleared by pressing the SPACEBAR This is always true as long as the RETURN ENTER key has not yet been pressed All keystrokes made since the last entry of the RETURN ENTER key will be erased The CANCEL command is automatic and does not require the RETURN ENTER key to be pressed The format is SPACEBAR A3 The SCI will respond by sending a carriage return and linefeed to move the cursor on the screen to the beginning of the next line The SCI always gives priority to commands over responses All commands are executed before any
19. h care COMMAND SYSTEM HARD REBOOT It is possible to force a system reset from the serial port duplicating the function of the RESET switch on the front of the SCI All outputs are reassigned to source 1 all previously stored data is cleared all salvo information is erased and the system will then reboot as though a power on condition occurred This hard reboot command is C Note no carriage return is required COMMAND SYSTEM SOFT REBOOT This is a less destructive reset This method will force the internal watchdog timer to restart the system as though a power on condition had occurred No crosspoint or salvo table information is lost Upon this reset the DIP switch settings of the SCI are read It is useful to use this reset command when changing the DIP switches without requiring a power down of the SCI This soft reboot command is CTRL W Again no carriage return is required COMMAND CONDENSED STATUS It is possible to get the status of the system in a condensed format There are two possible methods The first is in binary and the second is in packed BCD The advantage here is a minimal number of bytes are issued from the port and it is a very efficient method of gaining the status from within an external control program Since these characters may be non printing ASCII characters it is not useful to use in a terminal package The command for a condensed status in binary is SB RETURN ENTER The comma
20. he equipment rack securing the front mounting brackets with the supplied 1110 24 plastic coated rack mounting screws For shorter front to back rack mounting applications be certain both extender bars are positioned between the vertical rear mounting rack rails 3 Install both rear mounting brackets C over the end of the extender bars with the angled portion pointing toward the outside 4 Secure the rear mounting bracket to the rear of the rack using 10 24 plastic coated rack mounting screws 5 Install at least one of the supplied 28 32 panhead screws D through the extender bar and into the threaded inserts in the mounting bracket on each side For greater security an additional screw may be installed where possible Rear Support Installation right side only shown 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 This coaxial cable is connected between either the COMM 1 or COMM 2 BNC on the SCI interface on the rear of the power frame and the COMM connection on the rear of the control panel Both connectors provide an identical interface to the SCI Several control panels may be adde
21. he range of 0 C to 50 C Ventilation slots are provided on the front and sides of the frames to assist in the removal of the excess heat generated in the normal operation of the units These ventilation slots must not be blocked Sigma Electronics will consider blocking 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 environment 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 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 Audio Frame placement Due to the susceptibility of all audio circuitry to interference 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 commercial power environments providing input voltage between 100VAC and 240VAC 1096 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
22. hose nine only seven are required for serial communications with the SCI MRX The above wiring chart is typical for most IBM and compatible type PC s However it is always best to check with the manufacturer s wiring specifications to determine exact pin assignments before beginning This is especially true if using COMM 1 since some manufacturers use a 9 pin D connector instead of a 25 pin D Regardless of the connector the signal connections are the same RXD and TXD are reversed depending upon whether the serial port is configured as a DTE data terminal equipment or a DCE data communications equipment If the control equipment does not require handshaking there is no need to jumper the pins on the SCI MRX When handshaking is not required only 3 pins will be used TXD RXD and Signal Ground All other pins will have no connection A10 APPENDIX B SPECIFICATIONS SYSTEM CONTROL INTERFACE MODULE MRX SCI Data Transmission System RS 232 amp RS 422 Serial Port Baud Rate Up to 57 6 Kb baud Control Levels er rte e tx tms Four or eight Communication Line Coaxial up to 2000 feet Control Panels sei Up to 64 on 2 Comm Lines Number of Salvos Four from Master Control Panel Po Simple ASCII supports Xon Xoff External Sync Reference Composite Sync or Blackburst
23. is referred to as a breakaway switch As well the operator may source video and audio from two different source devices With the use of level control the video source is preset on its level and audio is preset on a different level At the TAKE command the two different source signals switch to a common destination This is referred to as a split mode switch 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 The SCI MRX is not case sensitive and therefore does not care if capital or lower case letters are used Please note that_spaces are not used in any command strings COMMAND Audio Follow Video switch IxxxOxxx RETURN ENTER The I represents INPUT and the O OUTPUT The xxx represents the one to three digit number of the respective INPUT and OUTPUT Leading zeros are optional Valid INPUT numbers for the SCI are 1 to 128 Valid OUTPUT numbers are 1 to 128 To generate a TAKE command press the RETURN ENTER key on the keyboard When the SCI receives the request and executes the change it will respond with an ASCII message OK unless disabled see N Y command explanation COMMAND BREAKAWAY AxxxOxxx RETURN ENTER
24. l pate seu etel 80ns typical Operating 0 to 50 degrees Celsius B2 APPENDIX B SPECIFICATIONS DIGITAL AUDIO FRAME Unbalanced MRX CDAF Signal Type fu tt cand AES 3id 1995 ONNE IONS is ii A ieee 75 Ohm BNC la o P iE A At TE 32 single ended terminated 1V p p max Input return OSS ccs wine eem 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 tore toco 1000 feet maximum UIDES socie 32 single ended 1V p p max Output return loss eee 15 dB min from 0 1 MHz to 6 0 MHz Output 75 ohms from 0 1 MHz to 6 0 MHz Output Rise and Fall time 30ns tr 44ns 10 to 90 rise time 30ns tf 44ns 10 to 90 fall time Serial Data Rates xi sas ie rer RE penes 3 072 Mb s max Fs 48 kHz max Serial Data Jitter 20ns p p max RECIOCKING cuti rt OR a Automatic Electrical a A ss dat 80ns typical Operating 0 to 50 degrees Celsius POWER SUPPLY FRAME MRX PSF AC Input Voltage eiecit rnm ent t ets 100 240 VAC 50 60 Hz AC Input Connectors 3 pin IEC 2 total per frame Power Supply AC DC
25. l is not assigned such as in a breakaway the unassigned inputs will display dashes to indicate these input levels will not be affected by the salvo The dashed lines would appear at levels 3 C and 4 D of output 16 for the sample salvo 1 given in the previous command paragraph COMMAND SALVO STATUS SINGLE OUT Within each salvo a specific output can be checked for the status 59 RETURN ENTER The example command for salvo 3 would yield the current status S for output nine 9 COMMAND SALVO ERASE clear There are six commands available to erase a salvo or portions of a salvo To erase an entire salvo use the following command 2 RETURN ENTER In the example above the command will take salvo 4 erase Z the entire contents To erase only a specific output use the command with an output limiter attached Z14 RETURN ENTER This example for salvo 2 erases Z all input assignments for output fourteen 14 A range of outputs within a salvo can be erased as a group 1211 18 RETURN ENTER This example for salvo 1 erases Z all input assignments for outputs eleven 11 through eighteen 18 It is possible to erase only one level of a salvo The following command erases only the level designated for all transactions listed in the command string APPENDIX A SCI PROTOCOL AND INTERFACE ZB RETURN ENTER The example above for salvo 2 will erase Z all level
26. nd for a condensed BCD status SC RETURN ENTER For a detailed explanation of the byte sequence please contact Sigma Electronics software department A4 COMMAND HALT DATA TRANSMIT The SCI supports the XON XOFF protocol This is a method through software of halting and resuming transmission of data The XOFF is activated by holding the Control key and pressing S CTRL S This will halt data transmission Incoming commands are still executed during an XOFF It is the responses generated by the SCI that are not sent They are held in a message buffer until an XON is received Like the CANCEL command XOFF is automatic and does not require the RETURN ENTER key to be pressed COMMAND RESUME DATA TRANSMIT XON is activated by holding the Control key and pressing Q CTRL Q This will resume transmission of data from the SCI All pending responses are sent out the serial port in the same sequence in which they were received and stored Like the CANCEL and XOFF command XON is automatic and does not require the RETURN ENTER key to be pressed SALVO COMMANDS The SCI MRX is capable of internally storing ten different salvos A salvo provides a method of switching multiple commands at one time This grouping of switches eliminates delay of switching from the first step to the last step in a multi step switch There are commands that pertain exclusively to the creation edit and execution of a salvo The ten distinct
27. o generate a typical audio follow video switch use the sequence below IxxlyyyOzzz RETURN ENTER The forward slash precedes the SCI s two digit logic address xx the input number is represented by one two or three digits yyy and the output or destination is represented by the one two or three digit zzz 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 See INTRODUCTION for details This chart sets the communications Baud Rate Baud Rate The Dip switch settings below are configured for a 4 level 32x32 matrix using RS 232 protocol at 38 400 baud rate 9600 OFF ON 19200 A m on Orr 3840 Off down ON up 57600 This chart sets the number of switcher inputs sources ON oN O1 16 SORE ON 0 eger ON oF 01 48 _ __ oF 01 64 ON o oF ON oF oF 0 12 This chart sets the number of switcher outputs destinations Output Range oN 01 16 OFF 1 ON 01 32 Use address 00 for RS 232 All other settings are for RS 422 operation
28. switch labeled RESET This switch functions as a microprocessor hardware reset that forces the processor to restart from a default setup condition The SCI will reset all crosspoints every output will be set to input 1 An S1 reset will clear all entries in the internal salvo tables and panel restrictions in the SCI memory Reset must be used with care Refer to the CTRL W command before implementing a system reset with S1 The 12 position DIP switch S2 provides system configuration System configuration includes serial port baud rate switcher input range output range protocol logical addressing and number of control levels Refer to the tables provided in this manual The four position switch S3 is used to select the Numeric Aloha mode X enable disable hardware handshaking and control panel scanning Control Levels The SCI MRX supports four or eight control levels Rotary switches on the front of the audio and video boards control level assignments for each output group Level 1 typically assigned to the video modules is designated with an A in the ASCII protocol Level 2 typically assigned to the audio modules is designated with letter B in the protocol The separation of signals into levels allows the routers logic to switch one level without affecting any other level Using level control allows the operator to switch a video signal to a given destination without changing the audio signal for that destination This
29. us connectors These Bus connectors are used to transmit the control data from the SCI to all system frames All systems will be provided with enough bus cable assemblies to meet the requirements of the system plus an expansion connector 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 Although all power modules are identical some positions within the frame are dedicated to supply power to digital audio or video frames and other positions are to supply analog frames For applications where redundancy is required each power frame can hold two digital and two analog assigned supplies After the power supply modules are plugged into the power frame s slots install the power cables into the rear of each supply and then connect to the rear of the appropriate frame analog or digital Analog power cables are terminated with 4 pin connectors and digital power cables are terminated with 6 pin connectors Ensure that 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 frame Redundant analog or digital power supplies may be mounte
30. uted within this time it will automatically be canceled and a salvo cancel message will be sent out the serial port A6 COMMAND EXECUTE PRESET SALVO To execute a preset salvo choose the salvo number symbol of the preset salvo RETURN ENTER The example above will execute salvo 4 which was in the preset mode COMMAND CANCEL PRESET SALVO A preset salvo can be canceled Q RETURN ENTER The sample above takes a preset condition for salvo 4 and releases Q quit it This cancellation of the preset salvo allows normal transactions to resume RS422 485 PROTOCOL COMMANDS Unlike the RS232 commands the RS422 485 protocol allows for multiple devices to be connected to a computer terminal at the same time In order for the computer terminal to communicate with a device in RS422 485 it must first tell the device to listen This is the purpose of the logic address The SCI has four DIP switches reserved for setting the device s logic address Valid addresses for the SCI are 01 07 an address of 00 indicates that RS 232 is being used The format for RS 422 485 protocol is identical to that of RS232 with one exception Any RS422 485 command must be have the prefix of a forward slash The forward slash is required on all commands including special commands like XON XOFF XX The slash is the precursor and the xx is the logic address of the device This is ALWAYS a TWO DIGIT NUMBER For example t
Download Pdf Manuals
Related Search