docs/MSRA User Manual v1_35
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1. symbol the emitter by a symbol The MSRA is connected to the 120VAC mains via the 2 prong 6 foot AC cord Set up and Operation A Endec Programming Reference section 9 2 SE1822 or section 10 2 3644 of the Sage Endec User Guide and Reference Manual for complete details Entry of a password will be required to complete most of the steps below Do not reassign any of the MSRA relays to stations using the msrp assign msrp relay menu unless you are positively sure of what you are doing The default settings are the proper settings for most installations 1 Assign either COM4 or COM5 1200 baud ports on the SE 1822 or any port on the 3644 Digital to be used as a RELAY device for using the MSRA menu devices COM X device type relay X selected COM port For the 3644 Digital it will be necessary to set the baud rate to 1200 baud for the COM port chosen by using menu devices COM X baud rate X selected COM port Set up the call sign for each station by using menu MSRP station call sign The character is the station number 2 4 Follow the prompts to install the desired station call signs for stations 2 4 Enable each station desired by setting menu MSRP station enable to YES for each desired station The 3644 Digital Endec is shipped with the digital audio enabled by default It will be necessary to disable the digital audio This may be done from the Endec front panel by setting menu2. dBm EAS Audio Output 10 to 12 dBm Switching Relays loop through Sealed with bifurcated gold clad over silver nickel contacts 2 per stereo channel Logic Control 8 bit PIC Microprocessor Logic and audio I O Interface RJ11 modular to DB9 RS232 Logic and wire leads audio Status Indication Front Panel LED Power and EAS Station Relay Active indicators Power Requirement 105 125VAC 50 60Hz internally fused at 1 4 A Size 9 X 6X 2 3 8 inch ABS cabinet Optional Rack Mount MSRA RM 1 MSRA on one 2 unit high 19 panel Warranty Information The DM Engineering MSRA and is warranted for a period of one year from the date of purchase This warranty covers materials and workmanship only Any misapplication physical or electrical damage from outside sources or by the customer is not covered The customer must pay shipping costs to the factory and DME will pay shipping costs to return the warranted equipment to the customer Any priority shipping costs are to be the responsibility of the customer as ground service is standard Please contact the factory for an RMA number prior to any returns Items returned without an RMA may be sent back to the customer unopened Technical Support If you have questions experience difficulties with the product or require further information please contact DME at 805 987 7881 toll free 800 249 0487 or E mail technical support at support dmengineering com or visit www dmengineering com for
3. digital audio and select NO at the prompt to disable digital audio or by selecting the software program Endecsetd digital audio tab and disabling the digital audio You may be asked to re boot the Endec and you will need to recycle the Endec power for the changes to take effect See section 4 5 4 of your 3644 manual for details B Other COM Port Devices if used 1 If Remote Controls such as the DM Engineering Ultimate Ultimate Jr SE1822 Remote Control and Automation Interface any other DM Engineering Automation Interface module or the Sage RC 1 are to be used configure the appropriate ports for the Hand Control option by selecting menu device COM X type hand control X selected COM port Note that DM Engineering Remote Controls and Automation Interface Modules are 9600 baud devices and may be used to control COM ports1 on the front panel variable baud rate 2 fixed 9600 3 variable and 6 fixed 9600 COM1 and 3 may be set to the desired baud rate by selecting menu device COM X baud rate X selected COM port The RC 1 Remote Control is a 1200 baud device and must be configured for either COM1 3 4 or 5 whichever is not being used for the MSRA and or other Remote Controls or Automation Interface modules 2 The last command to assign the Remote Control or Automation Interface Module to its specific station is menu devices COM X station X selected COM port Audio Set up The MSRA EAS audio output i
4. right audio relay activation during an EAS event The MSRA is internally protected by a 1 4A AGC type fast blow fuse Installation 1 The MSRA should be located in an area that is not subjected to temperatures in excess of 85 degrees centigrade nor subjected to moisture greater than 90 relative humidity non condensing Station audio connections are made using the pluggable Eurostyle connectors Wires should be stripped approximately 1 4 inch and fully inserted into the connector Assure that the connector locking screws are fully tightened and that the wires are secure The MSRA insertion in the station audio chain should be made between the stations main audio source and the input to the stations processing equipment Balanced input and output and connections are made for each applicable station audio chain for both the left and right channels as indicated on the MSRA It is important that at no time should any of the or outputs be connected to ground Grounding any of the active outputs for an extended period of time may cause damage to the individual amplifier IC and will not be covered under the MSRA warranty RF protection is incorporated within the MSRA but in some high RF environments it may be advisable to connect a lead from any of the MSRA station Ground terminals to your station ground Data and audio connections are made using the supplied Data Audio Modular to DB9 cable The DB9 female connector is
5. the Endec A multi turn recessed front panel Input Gain trim potentiometer and individual multi turn Station Gain controls on the MSRA are provided for controlling the active stereo distribution amplifier sections having balanced output levels capable of greater than 12dBm into a 600 ohm load impedance A recessed front panel Test switch is also provided for aiding the setup of the audio levels See Audio Setup procedure below An optically isolated open emitter and collector Tally output is provided for user interface and is active when any or all of the 3 MSRA controlled stations are activated and remains active until the end of the EAS activation The MSRA is transparent to program audio due to it s loop through design and uses 6 high quality bifurcated gold over silver nickel contact sealed relays one relay for each left and each right channel circuit The MSRA also is designed to remain transparent to program audio during a power failure condition All station inputs and outputs are connected using large 5mm Eurostyle screw type pluggable connectors for wiring ease and connection reliability The internal power supplies precision regulators precision audio distribution amplifier sections and quality components throughout assure long life and trouble free operation of the MSRA No external power supplies wall warts are required Front panel LED indicators are provided for Power and Station left and
6. USER GUIDE DM Engineering Multi Station Relay Adapter MSRA and MSRA RM Version 1 35 DM Engineering 2174 Chandler St Camarillo CA 91345 4611 805 987 7881 800 249 0487 www DMEngineering com Overview The DM Engineering Multi Station Relay Adapter MSRA is a microprocessor based three stereo channel accessory for the Sage Endec EAS encoder decoder models SE1822 and the 3644 Digital when used in the analog audio configuration that expands the allowable controlled number of stations to a total of four from a single Sage Endec EAS Encoder Decoder The MSRA is available in both a table top version and a 2U rack mount version MSRA RM The Endec has embedded programming that allows additional stereo or mono stations in addition to the station controlled within the Endec itself to be controlled using Multi Station Relay devices such as the DM Engineering MSRA All digital commands and EAS audio are supplied by the Endec and the MSRA interprets these commands to select the appropriate station or stations for EAS broadcast Digital control communications between the Endec and the MSRA is accomplished via RS232 at 1200 baud through either the COM 4 or COM 5 1200 baud ports on the Model SE1822 and on any port on the 3644 Digital when programmed to do so See Endec Programming procedure below EAS audio for the MSRA is derived from the Speaker Line Output SE 1822 or Line Out 3644 Digital connection on the rear of
7. connected to either the Endec COM4 or COM5 port SE 1822 or any properly programmed COM port on the 3466 Digital See Endec Programming section below The audio connection is made by connecting the red wire to the Endec Speaker Line SE 1822 or Line Out connection 3644 Digital and the black wire to any of the Endec Audio Common or Gnd connections Audio levels are set according to the Audio Set up section below The RJ11 modular connector is connected to the MSRA Data Audio input port For long distance runs between the MSRA and the Endec the use of CAT5e cable is recommended for the extended run Both audio and data may be sent using CAT5e cable except in high RF environments where a separate shielded pair should be used for the audio See drawing below for the Interface Cable Schematic Optional CAT5e cable extensions up to 500 ft are available from DM Engineering at an additional cost TO DBS PIN 3 TO DBS PIN 5 Ji TAB DOWN Viewed from rear of connector common speaker line out TO ENDEC LINE OUT MSRA Interface Cable Schematic The Tally output is not required to be used for proper operation of the MSRA It consists of an optically coupled open collector emitter NPN transistor for external signaling that is active when any or all of the MSRA relays are activated The transistor can dissipate 150mw at 30 volts maximum emitter to collector The collector connection is designated by a
8. ed for audio set up Pressing and holding the recessed Test button on the MSRA will activate stations 2 4 relays simultaneously to aid in audio level set up Note Do not arbitrarily change the levels on the Endec itself as they may have been previously been set for the correct levels for station 1 To end the test tones press done or abort 4 Ifthe Endec audio outputs have been significantly increased beyond the default values 32 the MSRA output waveform of any one channel of any of the station outputs should be checked using an oscilloscope to assure that the input stage is not being overloaded Overloading will be noted by observing any clipping of the MSRA output waveform Adjustment of the Input Gain trimmer potentiometer may be required to avoid clipping This control has limited effect on the input gain stage and is designed for only reducing an overloaded input condition or increasing all three MSRA outputs simultaneously if required Set the appropriate Station Gain multi turn potentiometers to get the desired modulation levels for each station 5 Final testing of the system may be done by generating an RWT by entering week your password STN Follow the yes no prompts to test any or all of the stations 1 4 and then proceed Specifications Loop through Frequency Response DC to 20 kHz 1dB Loop through Signal to Noise gt 80dB Loop through Channel Separation gt 80 dB EAS Audio Input 10 to 10
9. s factory set at unity gain to deliver a 10dBm output into 600 ohms with the Endec default Attention and or Data Tone gain levels set at the default value of 32 10dBm The MSRA factory settings may be required to be readjusted after initial set up of the Endec The user should set the Endec EAS Attention Tone and Data Tone modulation levels to achieve a minimum of 80 modulation on all stations and the Attention and Data tones should be balanced to within 1 dB left and right channels to be in compliance with Part 11 of the FCC Rules The MSRA relies on these tones to be balanced as the precision distribution amplifier sections will faithfully reflect this balance or imbalance Refer to section 4 3 SE1822 or 4 4 8644 of the Endec User and Reference Guide for detailed instructions 2 After initial audio set up of the Endec as described above has been completed for Station 1 the XLR outputs on the Endec itself and the proper modulation levels and balance have been achieved the individual Station Gain controls may need to be adjusted on the MSRA to achieve a minimum of 80 modulation when an attention tone is transmitted Each Station Gain control simultaneously adjusts both left and right levels of the balanced precision MSRA amplifiers as detailed below 3 To generate an attention test tone for setting the audio levels in the MSRA enter menu levels attn tone You will be prompted to choose which relays are activat
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