AMS-4172 User Manual (Revision 02)
Contents
1. 2 8 34 45 144 155 Mb s and unbalanced AES Audio path suitable for 2 balanced or 4 unbalanced audio or data signals and balanced AES Married or independent operation Momentary Set Reset control No path change on power fail or board removal video only Local or remote control SNMP monitoring and control of module IRT Electronics Pty Ltd www irtelectronics com Page 5 of 18 Revision 02 TECHNICAL SPECIFICATIONS Video Signal path Signal types Impedance Switching characteristic Video crosstalk between channels Frequency response Audio Low speed Data Audio Crosstalk Control Mode Gnd Audio Toggle Video Reset Video Set NOTE Front panel switches Tally Gnd Video Tally Audio Tally Connectors Video Audio Control Tally Relay Contact rating Power requirements Volatge Power consumption Other Temperature range Mechanical Finish Front panel Rear assembly Dimensions Supplied accessories NOTE Main Standby AMS 4172 3G SDI HD SDI SD SDI ASI G 703 Video unbalanced AES Non terminating designed for 75 Q use Magnetic latching 4 port changeover relay lt 75 dB to 10 MHz measured input terminated by 75 Q lt 45 dB to 270 MHz lt 40 dB to 1 5 GHz lt 25 dB to 3 0 GHz 0 1 5 dB O Hz to 3 0 GHz lt 90 dB 20 Hz 20 kHz input terminated by 600 Q Momentary ground or open circuit switch selectable Pin 1 Pin 2 Standby Main Pin 32. Main Pin 4 Standby Separate Audio amp Video controls or Audio follows Video switch selectable Non momentary contacts required in Toggle modes Momentary illuminated push button Automatic remote default setting after several minutes Switch to Ground Main Switch to Open Circuit Standby Pin 1 Pin 2 Pin 3 BNC 5 pin Phoenix pluggable screw block 4 pin Phoenix pluggable screw block 3 pin Phoenix pluggable screw block 30 Vdc 0 5 A 28 Vac CT 14 0 14 or 16 Vdc lt 1 5 VA 0 50 C ambient Suitable for mounting in IRT 19 rack chassis with input output and power connections on the rear panel Note Not compatible with pre 4000 series 3RU frames Grey background black lettering amp red IRT logo Detachable silk screened PCB with direct mount connectors to Eurocard and external signals 6 HP x 3 U x 220 mm IRT Eurocard Rear connector assembly with matching connectors for control input and tally outputs IN A to OUT A IN B to OUT B IN A to OUT B IN B to OUT A Due to our policy of continuing development these specifications are subject to change without notice IRT Electronics Pty Ltd www irtelectronics com Page 6 of 18 Revision 02 AMS 4172 CONFIGURATION DIP Switch Settings DIP suena Swi Remote Control SW1 1 OFF Switch to Ground control Default ON Switch to Open Circuit control Video Relay Control SW1 2 OFF Magnetic Latch Video relay control Def
3. SNMP commands other than Audio follows Video operate whether SW1 4 is set ON or OFF NOTE Open circuit control implies removing a ground contact Input termination No terminations are provided on the module so that the switcher can function in changeover mode For 2 x 1 switcher applications the following terminations are recommended be installed Video Output A Main only is used and should be terminated at connected equipment Output B Standby should be terminated in 75Q or 50Q if being used for 500 RF signals using a BNC termination plug Audio Outputs A only are used and should be terminated at connected equipment Output B may be terminated if desired by connecting termination resistors to the connector on the rear assembly of the module The resistor values should be chosen to match the characteristic impedance of the rest of the connected audio system For example for balanced 600Q two 3000 resistors should be used In most modern audio systems a low output impedance of approximately 400 and input impedances of greater than 10 kQ are used If this is the case no termination of the unused audio output is required IRT Electronics Pty Ltd www irtelectronics com Page 7 of 18 Revision 02 AMS 4172 INSTALLATION Pre installation Handling This equipment may contain or be connected to static sensitive devices and proper static free handling precautions should be observed Where individual circuit cards
4. Input B Standby to Output A Provided the SET pin SK7 4 isn t already being held to ground momentarily grounding the RESET pin SK7 3 will select Input A Main to Output A and Input B Standby to Output B Switch to open circuit operation If the AMS 4172 has been set to switch to open circuit operation with the DIP switch SW1 1 ON provided the RESET pin SK7 3 isn t already being held open circuit momentarily open circuiting the SET pin SK7 4 will select Input A Main to Output B and Input B Standby to Output A Provided the SET pin SK7 4 isn t already being held to open circuit momentarily open circuiting the RESET pin SK7 4 will select Input A Main to Output A and Input B Standby to Output B Toggle Mode With SW1 2 ON the SET SK7 4 control operates in the video toggle mode of operation The RESET SK7 3 pin has no effect on the video relay control whilst in the toggle mode of operation If switch SW1 3 has been set to ON so that the audio relays operation follows that of the video relay operation the audio control pin SK7 2 has no effect on the audio relays control Switch to ground operation If the AMS 4172 has been set to switch to ground operation with the DIP switch SW1 1 OFF grounding the SET SK7 4 pin will select Video Input A Main to Video Output B and Video Input B Standby to Video Output A Removing this ground will automatically video reset Video Input A Main to Video Output A an
5. RT Electronics Pty Ltd www irtelectronics com Page 3 of 18 Revision 02 AMS 4172 OPERATIONAL SAFETY WARNING Operation of electronic equipment involves the use of voltages and currents that may be dangerous to human life Note that under certain conditions dangerous potentials may exist in some circuits when power controls are in the OFF position Maintenance personnel should observe all safety regulations Do not make any adjustments inside equipment with power ON unless proper precautions are observed All internal adjustments should only be made by suitably qualified personnel All operational adjustments are available externally without the need for removing covers or use of extender cards IRT Electronics Pty Ltd www irtelectronics com Page 4 of 18 Revision 02 AMS 4172 GENERAL DESCRIPTION BLOCK DIAGRAM AMS 4172 SIGNAL PATH VIDEO A 1 P Viboroa AUDIOA L P AUDIO A L O P O P VIDEO B AUDIO B L O P VIDEO BI P AUDIO B L 1 P j AUDIOA R Eo AUDIO A R O P ERT AUDIOB R O P FPGA Tally Video Reset Audio Toggle The AMS 4172 consists of one video and two balanced audio switches arranged as a changeover set with two inputs and two outputs No terminations are provided on the board allowing the switcher to be used in a wide variety of applications and with signals of various types and impedances The video path uses enhanced performance relays to provide switching c
6. RT SNMP Frame Ethernet Cable Ethernet Cable IRT modules fitted CDM with SMU 4000 oe el IRT SNMP Frame Ethernet Cable IRT SNMP Setup IRT Electronics Pty Ltd www irtelectronics com Page 16 of 18 Revision 02 AMS 4172 AMS 4172 SNMP Functions When installed in an IRT frame with SNMP capability the AMS 4172 can be interrogated by an SNMP Network Management System NMS The following SNMP functions are capable of being controlled and monitored by an NMS irt4172VideoStatus An indication and control of the state of the video relay main 1 standby 2 Main defined as Input A connected to Output A and Input B connected to Output B Standby defined as Input A connected to Output B and Input B connected to Output A irt4172AudioStatus An indication and control of the state of the audio relays main 1 standby 2 Main defined as Input A connected to Output A and Input B connected to Output B Standby defined as Input A connected to Output B and Input B connected to Output A irt4172AuFollowVidSource An indication of whether Audio Follows Video mode is controllable though SNMP or by local DIP switch localDIPsw 1 remoteSNMP 2 irt4172AuFollowVidSet An indication and control of the Audio Follows Video mode disabled 1 enabled 2 If disabled separate audio and video controls If enabled audio switching follows that of video switching NOTE SNMP control of this fun
7. apabilities for high speed data signals up to 2 97 Gb s and may be used with analogue video 3G HD SD ASI or G 703 data signals The audio path may be used for balanced or unbalanced audio or control signals RS232 RS422 RS485 etc The magnetic latching characteristic of the high performance relays allows momentary control and also provides for no change of path during power loss The AMS 4172 is ideally suited to applications where a simple choice between two inputs or outputs is required and may be easily driven by detector circuits for automatic path selection Local switching is possible using front panel push button switches Remote switching is possible using external normally open or normally closed alarms Front panel switches use a small delay to avoid accidental switching if bumped After a period of a few minutes the AMS 4172 automatically switches back into remote mode Remote indication of tally status is provided for integration into central alarm and monitoring systems SNMP Simple Network Management Protocol is available for monitoring and control when used in an IRT frame fitted with SNMP capability The AMS 4172 is designed to fit IRT s 1RU and 4000 series 3RU Eurocard frames and may be used alongside any other of IRT s analogue or digital Eurocards Standard features One video and two audio changeover switches in one package Video path suitable for 3G HD SD SDI Analogue video ASI G703 signals
8. are stored they should be placed in antistatic bags Proper antistatic procedures should be followed when inserting or removing cards from these bags Power AC mains supply Ensure that operating voltage of unit and local supply voltage match and that correct rating fuse is installed for local supply DC supply Ensure that the correct polarity is observed and that DC supply voltage is maintained within the operating range specified Earthing The earth path is dependent on the type of frame selected In every case particular care should be taken to ensure that the frame is connected to earth for safety reasons See frame manual for details Signal earth For safety reasons a connection is made between signal earth and chassis earth No attempt should be made to break this connection Installation in frame or chassis See details in separate manual for selected frame type Video analogue 3G HD SD SDI ASI G 703 data unbalanced AES Signal connections Signal connections are made to BNC coaxial connectors No termination of inputs is provided on the module When switched to the output the input load impedance is that of the load connected to the output Where the input signal is required to be terminated and one of the outputs is not connected to anything then this unconnected output should be terminated by an appropriate BNC terminator of the required impedance usually 75 Ohm INA KB OUTA SK4 IN B SK5 OUT B kg IRT Electro
9. ault ON Toggle Video relay control Audio Relay Control SW1 3 OFF Separate Audio relay control Default ON Audio follows Video relay control SNMP Control SW1 4 OFF DIP switch control Default ON SNMP control Local to Remote SW1 5 OFF Front Panel Local Remote switch automatically reverts from Local to Remote mode after a period of 5 6 minutes Default ON Front Panel Local Remote switch permanently stays in its set position i e does not automatically revert to Remote mode Remote switching control is either by switch to ground operation or switch to open circuit This allows for connection to either alarm type condition of external equipment being used to drive the AMS 4172 Magnetic latch relay control needs a set and reset operation to switch between the two relay states whilst toggle relay control only requires a set and removal of set to switch between the two states With Audio follows Video control only the video control is needed as the audio relays track what the video relay is doing If video relay has been set for magnetic latch operation audio relays are also set for magnetic latch operation However with separate audio relay control that is audio not following video audio relays are always operated in toggle mode SNMP control only relates to Audio follows Video control With SW1 4 set to ON the SNMP Audio follows Video command over rides the DIP switch SW1 3 setting All other
10. ays are in If however Audio relays have been set to follow the Video relay either by the Sw1 3 DIP switch position or via the SNMP setting Audio relays will follow that of the Video relay state and the AUDIO MAIN STANDBY switch will not function except to indicate the same state as the VIDEO MAIN STANDBY switch position Switches need to be held down for approximately a second before activation takes place This is so to avoid accidental switching taking place should the switches be pressed accidentally as they are momentary not latched contact type switches IRT Electronics Pty Ltd www irtelectronics com Page 13 of 18 Revision 02 AMS 4172 Remote Control Magnetic Latch Mode With SW1 2 OFF the SET SK7 4 and RESET SK7 3 controls operate in the video magnetic latch mode of operation If switch SW1 3 has been set to ON so that the audio relays operation follows that of the video relay operation then the audio relays effectively operate in the magnetic latch mode as well If however SW1 3 has been set to OFF for independent audio and video control the audio relays are only remotely controlled in the toggle mode regardless of how SW1 2 has been set Switch to ground operation If the AMS 4172 has been set to switch to ground operation with the DIP switch SW1 1 OFF provided the RESET pin SK7 3 isn t already being held to ground momentarily grounding the SET pin SK7 4 will select Input A Main to Output B and
11. be of assistance in fault location and remedy A contact name and telephone and fax numbers Details of payment method for items not covered by warranty Full return address For situations when No Fault Found for repairs a minimum charge of 1 hour s labour will apply whether the equipment is within the warranty period or not Contact IRT for current hourly rate NODWN Please note that all freight charges are the responsibility of the customer The equipment should be returned to the agent who originally supplied the equipment or where this is not possible to IRT directly Details of IRT s direct address can be found at IRT Electronics website Web address www irtelectronics com Email sales irtelectronics com IRT Electronics Pty Ltd www irtelectronics com Page 18 of 18 Revision 02
12. ction is only available if switch Sw1 4 is set to ON position irt4172FirmwareVersion An indication of the firmware version of the FPGA in the format x y where x is the major revision number and y is the minor revision number irt4172SoftwareVersion An indication of the software version of the processor in the format x y where x is the major revision number and y is the minor revision number irt4172Reset Unit reset control A set with a value of 2 sent to this OID will cause a system reset to occur When queried returns a Null irt4172VideoTrapEnable Disables or enables a Trap to be sent when the video relay status changes disable 1 enable 2 irt4172AudioTrapEnable Disables or enables a Trap to be sent when the audio relays status changes disable 1 enable 2 IRT Electronics Pty Ltd www irtelectronics com Page 17 of 18 Revision 02 AMS 4172 MAINTENANCE amp STORAGE Maintenance No regular maintenance is required Care however should be taken to ensure that all connectors are kept clean and free from contamination of any kind This is especially important in fibre optic equipment where cleanliness of optical connections is critical to performance Storage If the equipment is not to be used for an extended period it is recommended the whole unit be placed in a sealed plastic bag to prevent dust contamination In areas of high humidity a suitably sized bag of silica gel should be included to deter corr
13. d Video Input B Standby to Video Output B Unless SW1 3 has been set for audio follows video operation the same is true for the audio control SK7 2 pin Switch to open circuit operation Likewise if the AMS 4172 has been set to switch to open circuit operation with the DIP switch SW1 1 ON open circuiting the SET SK7 4 pin that is removing a ground will select Video Input A Main to Video Output B and Video Input B Standby to Video Output A Grounding this pin will automatically reset Video Input A Main to Video Output A and Video Input B Standby to Video Output B Unless SW1 3 has been set for audio follows video operation the same is true for the audio control SK7 2 pin IRT Electronics Pty Ltd www irtelectronics com Page 14 of 18 Revision 02 AMS 4172 SNMP What Is It SNMP stands for Simple Network Management Protocol It is an application layer protocol for managing IP Internet Protocol based systems SNMP enables system administrators to manage system performance and to find and solve system problems SNMP runs over UDP User Datagram Protocol which in turn runs over IP Three types of SNMP exist SNMP version 1 SNMPv1 SNMP version 2 SNMPv2 and SNMP version 3 SNMPv3 It is not the intention here to discuss the differences between various versions only to bring attention to the fact that IRT Electronics modules fitted with SNMP capability use SNMPv1 An SNMP managed network consists of three k
14. e type This is a unique number specific to the model of managed device Other information relating to the device is also stored information such as alarm states controllable settings etc The MIB tree is organised in such a way that there will be no two MIB files with conflicting placements Normally an NMS polls an agent for information relating to the M B in a managed device to be sent back to the NMS When certain conditions are met within the MIB such as major alarm conditions for example the agent automatically sends what is known as a trap to the NMS without any prompting from the NMS This allows automatic notification of a predetermined event SNMP Block Diagram SNMP Agent SNMP Agent Protocol Engine SNMP Agent SNMP Agent Protocol Engine SNMP Agent SNMP Agent Protocol Engine IRT Electronics Pty Ltd www irtelectronics com Page 15 of 18 Revision 02 AMS 4172 SNMP with IRT Products IRT Electronics currently employs SNMPv1 with its SNMP capable frames The frame acts as an agent when fitted with a CDM xxxx module This module has its own designated slot next to the power supply so as to not affect the number of modules that the frame will take Communication between the NMS the frame and its loaded modules are via this CDM xxxx module Note that the NMS software is third party and not supplied by IRT Electronics Ethernet connection for SNMP operation is via an RJ45 connector on the rear of the frame bel
15. ey components Network Management Systems NMS agents and managed devices An NMS is the console through which the network administrator performs network management functions such as monitoring status e g alarm states and remote controlling of a set of managed devices One or more NMS s must exist on any managed network Generally the NMS is a computer running third party SNMP control software There are a number of third party SNMP software applications currently available on the market An NMS polls or communicates with an agent An agent is a network management software module that resides in a managed device An agent has local knowledge of management information and translates that information into a form compatible with SNMP The agent therefore acts as an interface between the NMS and the managed devices The NMS sends a request message and control commands for the managed devices to the agent which in turn sends a response message containing information about the managed devices back to the NMS A managed device contains an SNMP agent and resides on a managed network Managed devices collect and store management information and make this information available to NMS s using SNMP Managed device agent variables are organised in a tree structure known as a Management Information Base MIB Within the MIB are parameters pertaining to the managed device An Object Identifier OID number within the MIB defines the managed devic
16. iss Jun s Jasi Jer Joes Dosa lsm IEB Coca AMS 4172 Changeover Switch ELECTRONICS User Manual IRT Electronics Pty Ltd www irtelectronics com Revision 02 3G HD SD SDI ASI G 703 Video Audio Relay Changeover Switch Revision History AMS 4172 Revision Date By Change Description Applicable to 00 08 02 2011 AL Original Issue S N gt 1102001 01 25 02 2011 AL Correction to control pin designation in S N gt 1102001 specifications 02 02 11 2012 AL DIP switch SW1 5 functionality added Firmware version AMS4172F4V3S4V2 IRT Electronics Pty Ltd www irtelectronics com Page 2 of 18 Revision 02 AMS 4172 USER MANUAL Table of Contents Section Page Revision History 2 Operational Safety 4 General Description 5 Technical Specifications 6 Configuration 7 Installation 8 Video Signal Connections 8 Audio Signal Connections 9 Remote Control Connections 10 Tally Connections 11 Front and rear layouts 12 Operation 13 Local Control 13 Remote Control 14 Magnetic Latch Mode 14 Switch to ground operation 14 Switch to open circuit operation 14 Toggle Mode 14 Switch to ground operation 14 Switch to open circuit operation 14 SNMP What Is It 15 AMS 4172 SNMP Functions 17 Maintenance amp Storage 18 Warranty amp Service 18 This instruction book applies to units programmed with firmware version AMS4172F4V3S4V2 or later I
17. n Audio Toggle control SK7 pin 2 not used when configured for Audio follows Video configuration IRT Electronics Pty Ltd www irtelectronics com Page 10 of 18 Revision 02 AMS 4172 Tally connections Switch status is made by a relay contact on the SK3 connector Tally located on the rear assembly With pins 1 amp 2 short circuited together Video is in the MAIN RESET position Input A Main to Output A and Input B Standby to Output B With pins 1 amp 2 open circuited Video is in the STANDBY SET position Input A Main to Output B and Input B Standby to Output A With pins 1 amp 3 short circuited together Audio is in the Main RESET position Input A Main to Output A and Input B Standby to Output B With pins 1 amp 3 open circuited Audio is in the STANDBY SET position Input A Main to Output B and Input B Standby to Output A Tally output connector SK3 pin configuration is as follows TALLY SK3 Pin Description Audio Tally Video Tally Ground e NUW IRT Electronics Pty Ltd www irtelectronics com Page 11 of 18 Revision 02 Front amp rear panel connector diagrams AMS 4172 IRT MAIN STANDBY GREEN ORANGE AUDIO LOCAL REMOTE GREEN ORANGE IRT Electronics Pty Ltd www irtelectronics com Page 12 of 18 AMS 4172 Revision 02 AMS 4172 OPERATION The AMS 4172 can be used for a MAIN STANDBY changeover switch or a 2x1 switche
18. nics Pty Ltd www irtelectronics com Page 8 of 18 Revision 02 AMS 4172 Audio Signal connections Audio signal connections are made to 5 pin plug in screw terminating connectors No termination of inputs is provided on the module When switched to the output the input load impedance is that of the load connected to the output There are four 5 pin audio connectors IN A OUT A Left IN B OUT B Left IN A OUT A Right and IN B OUT B Right Common Ground between IN and OUT is shared via the middle pin pin 3 R AUDIO ame L AUDIO garg lt a elo tle el Selo 3E tl Ee smeje m opel m lo e el 8 iO 2km J F om SK11 When wiring be sure to keep phase of audio cables the same The above connector will take either a balanced input balanced output audio or data RS 232 RS 422 etc signal or two unbalanced audio signals where the ground connectors are commoned together and the two unbalanced audio signals connected to each of the phase connections IRT Electronics Pty Ltd www irtelectronics com Page 9 of 18 Revision 02 AMS 4172 Remote Control Connections Remote switch control is made by either a switch to ground or switch to open circuit contact depending upon the DIP switch SW1 settings as described in the Configuration section of this manual on the 4 pin SK7 connector located on the rear assembly With the AMS 4172 set to operate in magnetic latch mode the video relay will ope
19. osion Where individual circuit cards are stored they should be placed in antistatic bags Proper antistatic procedures should be followed when inserting or removing cards from these bags WARRANTY amp SERVICE Equipment is covered by a limited warranty period of three years from date of first delivery unless contrary conditions apply under a particular contract of supply For situations when No Fault Found for repairs a minimum charge of 1 hour s labour at IRT s current labour charge rate will apply whether the equipment is within the warranty period or not Equipment warranty is limited to faults attributable to defects in original design or manufacture Warranty on components shall be extended by IRT only to the extent obtainable from the component supplier Equipment return Before arranging service ensure that the fault is in the unit to be serviced and not in associated equipment If possible confirm this by substitution Before returning equipment contact should be made with IRT or your local agent to determine whether the equipment can be serviced in the field or should be returned for repair The equipment should be properly packed for return observing antistatic procedures The following information should accompany the unit to be returned A fault report should be included indicating the nature of the fault The operating conditions under which the fault initially occurred Any additional information which may
20. ow the mains inlet Ethernet rate runs at either 10 baseT or 100 baseT Frame parameters such as Name Address and Location are set via an RS232 interface a D9 connector on the rear of the frame below the mains inlet A software terminal emulator such as Tera Term or HyperTerminal is used for setting and reading the parameters of the frame IRT modules that are SNMP compatible need a plug in SMU 4000 module with a program relevant to the module that it is plugged into Depending on the module besides the module identification parameters such as alarm states inputs and controls etc are communicated to the CDM xxxx agent via a data bus on the rear of the frame Thus the CDM xxxx collects information on what is loaded within the frame what positions they occupy and their current status for communication to the NMS when the NMS sends a request for information In the event of a major alarm from any of the SNMP compatible modules or power supplies a trap is automatically sent by the CDM xxxx agent to the NMS without any prompting by the NMS This alerts the operator to any fault conditions that may exist that need immediate attention O O L D FRU 4000 110 240 V 50 60 Hz FRAME 0 7 A max im RS232 V o Alarm AS3260 approval no CS6346N Ass no 804692 E O O IRT SNMP Connections IRT modules fitted CDM xxxx with SMU 4000 PSU s Se SS I
21. r application Switcher control is done either locally via the front panel pushbutton switches remotely by external signals alarms connected via the SK7 control connector on the rear assembly or via SNMP Simple Network Management Protocol using a Network Management System NMS Local Control There are three front panel momentary pushbuttons marked LOCAL REMOTE AUDIO MAIN STANDBY and VIDEO MAIN STANDBY MAIN STANDBY GREEN ORANGE AUDIO VIDEO LOCAL REMOTE GREEN ORANGE E MW The LOCAL REMOTE switch switches between front panel local control and remote control via the SK7 connector on the rear assembly The default state is in the remote orange setting To switch to front panel local control press this button and hold for approximately a second Switch colour then changes to green indicating that the AUDIO and VIDEO MAIN STANDBY switches are now operational Unless DIP switch SW1 5 is set to ON after a period of a few minutes the LOCAL REMOTE switch automatically reverts back to the remote setting The AUDIO and VIDEO MAIN STANDBY switches independently switch the audio and video relays between MAIN Input A goes to Output A Input B goes to Output B and STANDBY Input B goes to Output A Input A goes to Output B positions To activate press and hold for approximately a second Switch colour changes between green MAIN and orange STANDBY to indicate which position the changeover rel
22. rate and cause the input output states to cross over as follows Control Input Output SET Gnd Open Circuit A Main lt B B Standby lt A RESET Gnd Open Circuit A Main e A B Standby lt gt B Note In magnetic latch mode only a momentary contact or break is needed for the SET and RESET controls With the AMS 4172 set to operate in the toggle mode the video relay will operate and cause the input output states to cross over as follows Control Input Output SET Gnd Open Circuit A Main lt B make contact B Standby A SET Open Circuit Gnd A Main o A break contact B Standby gt B Note In toggle mode a permanent contact or break is needed for the SET control RESET pin is not used With Audio follows Video configuration the audio relays change as per the video relay controls above With Separate Audio control configuration audio control is only by toggle mode regardless of whether the video control has been set for magnetic latch mode or toggle mode Control input connector SK7 pin configuration is as follows CONTROL SK7 4 3 2 1 Pin Description Video SET control select Video Input B Standby to Video Output A Video RESET control select Video Input A Main to Video Output A Audio Toggle control select Audio Input B Standby to Audio Output A Ground PNW Bs Note Video RESET control SK7 pin 3 not used when configured for Toggle Video operatio
Download Pdf Manuals
Related Search