User`s Manual
Contents
1. are held down button 1 prevails To play both sounds alternately when both buttons are held down use the RH mode 5 Play different sounds each time when the same button is pressed Intended Operation Press button 1 to play file 001 the first time file 002 the second time and etc Button 2 sequences through file 201 202 When playing pressing any button has no effect Required Text in MODE TXT SN Notes Up to 99 files can be assigned to each button and file numbers but be consecutive To allow playback interruption use the SI mode To play only when the button is held down use the SH mode In the SH mode the same sound will repeat for as long as the button is held down To advance to the next sound the button must be released first 6 EM34A R Turn on a single different relay for each sound Intended Operation Turn on relay 1 when playing file 001 Turn on relay 2 when playing file 002 Required Text in MODE TXT Only the mode letters are required for example DH 7 EM34A R Turn on multiple relays for each sound Intended Operation Press button 1 to play file 007 and turn on relays 1 amp 2 Press button 2 to play file 008 and turn on relays 2 amp 3 Required Text in MODE TXT DS N0O0O1 XN1 XN2 F007 XFF N002 XN2 XN3 F008 XFF END Notes XFF is used to turn off all relays 8 EM34A X Pre program relays for synchronized activations during audio playback Th2. ground e g while a ground connected push button is pressed and held down Open Contact Input is continuously triggered when it s left open or at 3 3V 5V e g while a ground connected push button is up Make Contact Input is triggered one time as it goes from 3 3V 5V to OV e g when a ground connected push button is pressed down Break Contact Input is triggered one time as it goes from OV to 3 3V 5V e g when a ground connected push button is released Speaker Connections Regular Stereo Virtual Surround Stereo LF GD RT LF GD RT The left channel signal is internally inverted and that s why the left speaker has an inverted polarity for regular stereo output If the left speaker is not inverted then the output is virtual surround stereo Regular Mono BTL Mono 4X Power Booster LF GD RT LF GD RT Since BTL mono provides four times the output power of regular mono at the same supply voltage it is often used to boost the output power when the supply voltage is low However the speaker impedence should not be lower than 8 Ohms to avoid overloading the power amp Converting Stereo To Mono By default the left channel is inverted internally to facilitate the use of BTL Mono 4X power booster But if the Line Output is to be converted to mono with a stereo to mono patch cord then the in verted left channel will cancel out most if not all of the right chan nel In this case the fourth letter R must be a
3. play file 002 once When playing pressing any button has no effect Required Text in MODE TXT None this is the default mode DN Notes The button can be released or held down when playing lf the button is held down when the playback finishes the sound will be played again lf both buttons are pressed or held down at the same time button 1 prevails 2 Allow interruption during playback Intended Operation Press button 1 to play file 001 once Press button 2 to play file 002 once Playing can be interrupted by pressing any other button Required Text in MODE TXT DI Notes When playing pressing the same button again has no effect 3 Play the sound only once even if the button is held down Intended Operation Press button 1 to play file 001 Press button 2 to play file 002 Don t repeat the sound even if the button is held down Required Text in MODE TXT DS N00O1 F001 J888 N002 F002 J888 H888 J888 END Notes The system will stay in the H888 J888 endless loop for as long as the button is held down 4 Play only when the button is held down Intended Operation Press amp hold button 1 to play file 001 Press amp hold button 2 to play file 002 Required Text in MODE TXT DH Notes Playing stops as soon as the button is released If the same button is pressed again later playing re starts from the begin ning of the file instead of where it left off lf both buttons
4. EM34A EM34A R EM34A X User s Manual Page 1 of 6 Available Models EM34A no internal relays EM34A R 4 relays for simple control EM34A X 4 relays for advanced control Firmware Version 1 4 Technical Specifications Operation Mode playback only Sound File Format MP3 ISO 11172 3 up to 44 1KHz Max Number of Sound Files Direct Mode 4 Sequential Mode 4 x 99 Script Mode 999 Memory Card Type SD SDHC Max Memory Capacity 2 GB for SD FAT FAT16 32 GB for SDHC FAT32 Max Recording Time Assuming 128 kbps on a 2GB card 33 hours Supply Voltage 12 30 VDC Typical Standby Current 60 mA Audio Output 30V supply 8 Ohm load 10 THD N High efficiency class D Stereo 15W per channel Mono 55W bridge tied load BTL Trigger Interface 4 inputs contact closure or 3 3V 5V logic Physical Dimensions 5 1 x 4 0 x 1 4 Inputs Outputs amp Controls Power Light PWR The power light is turned on when power is applied Trigger Input Terminals T1 T4 GD These inputs are internally pulled up to 3 3Vdc and seen as logic 1 if actively driven by a DC signal within the range of 3 3V to 5V for units purchased before October 2015 or 3 3V to 40V for units purchased in after Octorber 2015 or simply left undriven To be seen as logic 0 these inputs must be actively driven to OV ground The GD terminal is ground connected internally to the power ground Reset Input Term
5. For example the command after F001 will not be executed until the 001 file has played to the end Automatic Execution of Script 000 Upon powerup or reset the system will automatically executes script 000 once if it exists Script Example DS N001 F007 W00030 BN R926 BF J168 1168 F001 W36000 J168 H033 F273 END DS is not really a script command but it tells the system to enter the Direct Script mode You can also use RS to enable the Round Robin Script mode When the T1 input is triggered the system start executing trigger N0OO1 Since this trigger is non interruptible it will always executes to the end Trigger NOO1 is executed as the following play file 007 wait 3 seconds turn on the Busy output random play a file within 901 to 926 turn off the Busy output jump to trigger 168 1168 Trigger 1168 is executed as the following play file 001 wait 60 minutes jump back to itself Since trigger 1168 is interruptible this endless loop can be broken by any future trigger Trigger H033 will never be executed because it is an indirect trig ger in the DS mode yet it is not jumped to by any other trigger Background Music Example The automatic execution feature can be used to play background music while no trigger is being executed For example DS l 000 F 123 J000 N001 F001 J000 END Here file 123 is looped from power up but can be interrupted by trigger inputs T1 The JOOO comm
6. and at the end of script 001 jumps to script 000 so file 123 starts to loop again although from the beginning instead of where it left off Random Play Consideration All files within a random range must exist or the system will play nothing when a non existing file is selected for random play For example the script command R926 randomly selects a file within 901 to 926 so every file from 901 to 926 must exist Note that random play does not guarantee that every file in the range will be played once before it selects the same file again EM34A EM34A R EM34A X User s Manual Page 4 of 6 System Configuration File By default the system works in the following mode without a configu ration file Trigger Input Parallel Trigger Mode Direct Playback Mode Non Interruptible Trigger Polarity Close Contact To operate the system in any other modes you need to create a plain text file called MODE TXT with a line of four letters First Letter Trigger Mode D Direct S Sequential R Round Robin Second Letter Playback Mode N Non interruptible Interruptible H Holdable S Script Third Letter Trigger Polarity C or no letter Close Contact O Open Contact M Make Contact B Break Contact Fourth Letter R or none By default the left channel is inverted internally to facilitate the use of BTL Mono 4X power booster But if the Line Output is to be converted to mono with a stereo to m
7. at the next command if any will not be executed until the file has played to the end Wnnnnn wait nnnnn units of 0 1 second Maximum value for nnnnn is 65535 6553 5 seconds Example W00020 wait 2 seconds Note W00000 wait forever Jnnn jump to trigger nnn Example J007 jumps to trigger 007 BF turn off the Busy output Use this command to turn the Busy output off BN turn on the Busy output Use this command to turn the Busy output on Rgnn random play one time Play a random file from group g within range 01 to nn For ex ample R015 will random play a file within 001 to 015 R208 will random play a file within 201 to 208 XNn turn on relay n EM34A R amp EM34A X only Example XN3 turns on relay 3 XNN turn on all relays EM34A R amp EM34A X only Example XNN turns on all relays XFn turn off relay n EM34A R amp EM34A X only Example XF2 turns off relay 2 XFF turn off all relays EM34A R amp EM34A X only Example XFF turns off all relays END Always add the word END at the end of the entire script You may add any comments for your own reference after END Important Notes All command letters must be in upper case Script lines must be separated by carriage returns the Enter key A script line is limited to 128 characters excluding and If more space is needed use the Jump command A command is always fully executed before the next one starts
8. dded to the system configuration file MODE TXT to prevent the left channel from be ing inverted internally EM34A EM34A R EM34A X User s Manual Page 3 of 6 Script Playback Mode Instead of playing a single sound file the Script Playpack mode executes a script of commands for each trigger Note that the Busy output will not turn on off automatically in the Script mode It must be specifically turned on off with the BN and the BF commands Written in the configuration file using plain text the script consists of multiple lines each containing the commands for a particular trigger in the following format nnn Command1 Commandz Here nnn is the trigger number and is one of the following N Non interruptible This trigger is not interruptible l Interruptible This trigger can be interrupted by another trigger but not itself H Holdable Execution continues for as long as the trigger is applied repeating if necessary Stops immediately when the trigger is removed In the DS and RS modes there are 4 direct triggers 001 004 corresponding to T1 T4 In addition to the direct triggers there are also indirect triggers An indirect trigger can be activated only by jumping from another trig ger using the Jump command In the DS and RS modes there are 995 possible indirect triggers 005 999 These are the script commands Fnnn play file nnn one time Example F168 plays file 168 Note th
9. dio playback by using the Windows based user friendly QSAplay program A PC is needed for programming only but not for the actual operation Script mode Relays are controlled by script commands Please see the Script Mode section for details All other modes A relay will turn on when the corresponding file is being played Relay 1 corresponds to file 001 relay 2 corresponds to file 002 and so on For example relay 4 will be turned on when file 004 is being played Trouble Shooting Guide 1 No sound a File numbers are not assigned properly b The system is in the wrong mode due to missing or incorrect configuration file c If the flash card is inserted when the power is on the system may not work To fix this problem recycle the power or use the RS input to reset the system The output volume may have been set too low Try turning it up Plays the wrong file File numbers are not assigned properly The system is in the wrong mode due to missing or incorrect configuration file OO ND Q 3 Noisy playback The speed of the flash card is too slow Use a faster flash card or convert the file to a lower bit rate EM34A EM34A R EM34A X User s Manual Page 5 of 6 Application Example Triggering with Normally Open Push Buttons V GD BY RS 11 T2 T3 T4 GD POWER SUPPLY 1 Play without interruption Intended Operation Press button 1 to play file 001 once Press button 2 to
10. e relays will be activated automatically when playing QSA files There is no required text in MODE TXT 9 Very weak or no audio from Line Output when it s converted to mono with a stereo to mono patch cord Add the fourth letter R in MODE TXT See System Configuration File for details EM34A EM34A R EM34A X User s Manual Page 6 of 6 Application Example Automatic Playback on Power up V GD BY RS T1 T2 T3 T4 GD 1 Repeat continuously on power up Intended Operation Play file 001 on power up if switch 1 is closed Play file 002 on power up if switch 2 is closed Play file 004 on power up if switch 4 is closed lf more than one switch is closed play all corresponding files sequentially Repeat the file s until power is turned off Heduired Text in MODE TXT RN Notes If priority is required use DN instead of RN In this case switch 1 has the highest priority switch 2 has the second highest priority and switch 8 has the lowest priority If more than one switch is turned on only the file for the switch of the highest priority will be played 2 Repeat at intervals on power up Intended Operation Same as the example above but play files at fixed intervals Only files with corresponding switches closed will play Required Text in MODE TXT RS N001 F001 W06000 N002 F002 W06000 NOO8 F008 W06000 END Notes W06000 is a delay loop of 6000 x 0 1 second 10 minutes so the file s w
11. ill be played at an interval of 10 minutes one file at a time Application Example Triggering with Normally Closed Switches amp Sensors T1 T2 T3 T4 GD V GD BY RS 1 Play when the switch sensor opens with no priorities Intended Operation Play file 001 when sensor 1 opens Play file 002 when sensor 2 opens Repeat the sound for as long as the sensor is open If multiple sensors are open at the same time play all corre sponding files sequentially Required Text in MODE TXT RNO Notes Unused inputs must be connected to the ground as shown in the wiring diagram 2 Play when the switch sensor opens with priorities Intended Operation Same as the example above but if multiple sensors are open at the same time the sensor of the highest priority prevails Required Text in MODE TXT DNO Notes The sensor connected to T1 has the highest priority and the sensor connected to T8 has the lowest priority 3 Play when the switch sensor opens but don t repeat Intended Operation Play file 001 when sensor 1 opens Play file 002 when sensor 2 opens Do not repeat the sound Required Text in MODE TXT DSB N001 F001 J999 N002 F002 J999 H999 J999 END Notes The system will stay in the H999 J999 endless loop for as long as the sensor is open The system will not respond to other sensors until this one is closed
12. inal RS Pull this input down to the ground momentarily to reset the unit Min duration is 100 ms This input has the same pull up characteristics as the trigger inputs Busy Output Terminal BY This open collector output from an internal transistor can be controlled with more flex ibility if the unit runs in the Script mode In all other modes it is automatically turned on while playing audio with a maximum sink current of 200 mA It can be used to synchro nously activate an external relay for switching on a device such as a lamp or a motor Power Input Terminals V GD Use a well regulated DC power supply to obtain the best sound quality Connect the power Supply s positive output to terminal V and the negative output to terminal GD Line Output LINE 1 8 Stereo Phone Jack This jack provides single ended line output Balance Knob BAL This knob adjusts the output balance between the two channels It should be set at the middle center detent if the unit is configured for BTL bridge tied load mono out Volume Knob VOL Turn this knob clockwise to increase the output volume It affects both the speaker and the line out Speaker Output Terminals LF left channel GD RT right channel See the Speaker Connections section Relay Output Terminals EM34A R amp EM34A X only These terminals are on the back of the unit Three terminals are provided for each relay NC Normally Closed NO Normally Open and Common The co
13. ntact is rated at 12A 120VAC or 10A 24VDC Typical Wiring Diagram for Push Button Activation LF GD RT V GD BY RS T1 T2 T3 T4 GD LINE VOL BAL POWER SUPPLY EM34A EM34A R EM34A X User s Manual Page 2 of 6 Parallel Trigger Modes The Trigger Mode defines how the playback is to be triggered via the parallel inputs Direct Trigger default In this mode each input directly triggers a corresponding file T1 File 001 T2 File 002 14 File 004 A trigger is valid when the input is shorted to the ground for at least 50 ms The Direct Trigger is prioritized from T1 the highest to T4 the lowest However it does not mean a higher priority input can interrupt a lower one It only means that if multiple triggers are applied at the same time the highest priority wins Sequential Trigger Use the Sequential Trigger to sequentially trigger up to 99 different files per input as described below T1 triggers File 001 099 T2 triggers File 201 299 T3 triggers File 301 399 T4 triggers File 401 499 Each trigger on the same input activates the next file in the se quence The sequence automatically restarts when either the end of the sequence is reached or there is a break in the sequence For example if there are only three files on the flash card 001 002 and 004 the system will only sequence from 001 to 002 File 004 will never be played because File 003 is missing The Seq
14. ono patch cord then the in verted left channel will cancel out most if not all of the right chan nel In this case add this letter R to prevent the left channel from being inverted internally For Script modes enter the script starting from the second line Be sure to add the word END at the end of the Script After editing the configuration file be sure to save it as a plain text file ASCII text file or simply text file The system may not work if the configuration file is not created properly File Number Assignment Sound files on the flash card must be assigned a unique file num ber for identification purpose The file number must be a three digit number within the following range For Direct Trigger 001 004 For Sequential Trigger 001 099 for T1 201 499 for T2 T4 Simply add the file number to the beginning of the original filename e g 001tiger wav Note that if the flash card is formatted with FAT FAT16 and you want to store the maximum number of files 511 on the card you should keep the filenames including the file num ber within 8 characters and use only upper case letters and num bers If the flash card is formatted with FAT32 then you may use any filename that Windows allows Relay Control EM34A R EM34A X only The relays are controlled differently in different modes QSA mode EM34A X only Relays are pre programmed for synchronized activations during au
15. uential Trigger is prioritized from T1 the highest to T4 the lowest However it does not mean a higher priority input can interrupt a lower one It only means that if multiple triggers are applied at the same time the highest priority wins Round Robin Trigger This mode is very similar to the Direct Trigger mode except that the inputs are not prioritized So if multiple inputs are tied to ground then their files will be played one after another instead of just the highest priority one Round Robin mode can only be used in con junction with Non interruptible Playpack and Script Playback Parallel Playback Modes Non interruptible Playback default The file is played once per trigger The playback is not interruptible except by the system reset Looping is possible by applying a con stant trigger on the input Interruptible Playback The file is played once per trigger if not interrupted Any input can interrupt the playback except that an input cannot interrupt itself if the Trigger Polarity is either Close or Open Holdable Playback The file is played for as long as the input is triggered looping if necessary It is not interruptible except by the system reset Script Playback This mode allows many alternative playback options such as back ground music and random play Please see the Script Playback Mode section for descriptions Parallel Trigger Polarity Close Contact Input is continuously triggered when it s at OV
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