EM2218C User`s Manual
Contents
1. Notes W06000 is a delay loop of 6000 x 0 1 second 10 minutes so the file s will be played at an interval of 10 minutes one file at a time 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 lf multiple sensors are open at the same time play all corresponding files sequentially Required Text in MODE TXT RN 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 DN 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 DS 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 closed2. Mode defines how the playback is to proceed These Playback Modes do not apply when the system is controlled via the Serial Port 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 in cluding itself can interrupt the playback later Looping is possible by applying a constant trigger on the input 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 Please see the Script Playback Mode section for descriptions Positive Trigger Mode Normally a parallel input is triggered when its voltage level is low OV This can be reversed by setting the system to the Positive Trigger mode in which the triggering voltage is 5V Note that all parallel inputs are internally pulled up to 5V so unused inputs must be tied to ground for this mode Audio Output Modes Standard Output default This mode is enabled by placing a shorting cap on pin 1 and 2 of jumper J1 In this mode the power amplifier is always on There is no popping noise when the playback starts But when the board is idle a constant hissing noise may be heard from a sensitive speaker Mute Output This mode is enabled
3. the last step is to short T8 to the ground for at least 50 ms while maintaining the signal on T1 T7 Afterwards signals on T1 T7 don t matter any more Sequential Trigger Use the Sequential Trigger to sequentially trigger up to 99 different files per input as defined below However the total number of files cannot exceed 512 T1 triggers File 001 099 T2 triggers File 201 299 T8 triggers File 801 899 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 Sequential Trigger is prioritized from T1 the highest to T8 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 conjuction with Non interruptible Playback and Script Playback Parallel Interface Playback Modes The Playback
4. DM2218C EM2218C User s Manual Page 1 of 8 Models DM2218C version 1 5 Board only no enclosure EM2218C version 1 5 Board metal enclosure Technical Specifications Operation Mode playback only Sound File Format Windows WAV uncompressed PCM 6 8 11 025 16 or 22 05 KHz 8 bit depth monaural Max Number of Sound Files Parallel Direct Mode 8 Parallel Binary Mode 128 Parallel Sequential Mode 512 Parallel Round Robin Mode 8 Parallel Script Mode 512 Serial Control 512 Memory Type CompactFlash card type Max Memory Capacity gt 1GB Max Recording Time gt 1 hour Supply Voltage 6 VDC or 9 12 VDC Typical Standby Current 30 mA Mute mode 50 mA Standard mode Max Audio Output 1W 8 Ohm load Serial Interface RS 232 Parallel Interface 8 inputs CMOS logic level Physical Dimensions DM2218C board only 3 0 x 4 2 x 0 9 EM2218C board metal case 3 3 x 4 6 x 1 2 Interface Descriptions Power Input Terminals VD amp GD Use a well regulated DC power supply to obtain the best sound quality Connect the power supply s positive output to terminal VD and the negative output to terminal GD By default the board is set to accept a 9 12 VDC supply voltage with jumper J3 at the 12V position If the supply voltage is 6 VDC move jumper J3 to the 6V position Speaker Output Terminals S1 amp S2 This is a 1 watt bridged balanced o
5. 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 DM2218C EM2218C User s Manual Page 8 of 8 Application Examples Automatic Playback on Power up Application Examples Using Normally Closed Switches amp Sensors DM2218C EM2218C DM2218C EM2218C POWER SUPPLY 8 7 6 5 4 3 2 1 1 Repeat continuously on power up with no priorities Intended Operation Normally closed switches and sensors are often used in security Play file 001 on power up if switch 1 is turned on systems Play file 002 on power up if switch 2 is turned on Play file 008 on power up if switch 8 is turned on If more than one switch is turned on play all corresponding files sequentially Repeat the file s until power is turned off Required Text in MODE TXT RN Notes Adirect short can be used if there is only one sound file If priority is required use DN instead of RN In this case switch 1 has the highest priority switch 2 has the sec ond 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 intervals Required Text in MODE TXT RS N001 F001 WO06000 N002 F002 W06000 N008 F008 W06000 END
6. ace consists of a female DB9 serial port supporting the RS 232 communication protocol On the DB9 connector only three pins are used pin 2 for RX pin 3 for TX pin 5 for ground The hardware protocol is fixed at 9600 baud eight data bits no parity and one stop bit 9600 8N1 Other protocols may be sup ported by special request For RS 232 applications the system a DCE device is connected to a DTE device such as a PC with a regular serial cable not a null modem cable To enable the Serial Mode on the system the configuration file must contain a two digit device ID ranging from 01 to 32 This ID assignment seems unnecessary but is required for possible fu ture expansion purposes The communication protocol uses software handshake on a per byte basis That is for every byte it receives the system sends an confirmation byte to the DTE The DTE must not send the next byte until it receives the confirmation one exception explained below A communication session always starts with a selection process The DTE should first sends out an ASCII A which as the only exception will not be acknowledged by the system The DTE should then sends a binary coded address byte ranging from 1 to 32 If there is a system with the matching address it will respond by sending back an ASCII a within 100 ms Otherwise the selection process has failed and should be restarted Once the selection process is finished succ
7. another trig ger using the Jump command In the DS and RS modes there are 991 indirect triggers 009 999 In the BS mode there are 871 indirect triggers 129 999 These are the script commands Fnnn play File nnn Example F168 plays file 168 Wnnnnn wait nnnnn units of 0 1 second Example W00020 waits 2 seconds Jnnn jump to trigger nnn Example J007 jumps to trigger 007 BF turn off the Busy output The Busy output is always turned off at the end of the script Use this command to turn it off before the end of the script BN turn on the Busy output The Busy output is always turned on at the beginning of the script Use this command to turn it on if it has been turned off previously by the BF command 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 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 Automatic Execution of Script 000 Upon powerup or reset the system will automatically executes script 000 once if it exists Script Examples DS N001 F007 BF W00030 BN F899 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 or BS to enter the Round Robin Script
8. back DTE Sends R System Confirms r If the system is not paused it will simply ignore the command Busy DTE Sends B System Confirms b if playing paused or s otherwise Query Parallel Input Status DTE Sends Q System Confirms one status byte read from the parallel input This command is usually used when the parallel inputs are con nected to switches sensors and or other similar devices and you want to know the on off status of these devices Note that although the status of these devices can be read they cannot be used to trigger the audio because the Parallel Interface is disabled when the Serial Port is enabled The status byte has T1 as the LSB and T8 as the MSB Note that an input is at logic 1 when connected to 5V or left unconnected and it is at logic O when connected to OV the ground This command can be issued at any time Serial Command Error Code The system will confirm with an e if an invalid command is re ceived or if a valid command is received at the wrong time At this point the command should be aborted DM2218C EM2218C User s Manual Page 6 of 8 System Configuration File By default the system works in the following mode Parallel Control Direct Trigger Non Interruptible Playback To operate the system in other modes you need to create an ASCII text file called MODE TXT with one of the following two letter words on the first line Note that this file sho
9. by placing a shorting cap on pin 2 and 3 of jumper J1 In this mode the power amplifier is turned off when the board is idle eliminating the hissing noise But there will be a pop ping noise when the board starts to play This popping noise is caused by turning on the power amplifier and is harmless to the board DM2218C EM2218C User s Manual Page 3 of 8 Script Playback Mode Instead of playing just a single file Script Playback mode executes a script of commands for each trigger Written in the configuration file using plain ASCII text the script consists of multiple lines each containing the commands for a par ticular trigger in the following format nnn Command1 Commandz Here nnn is the trigger number and is one of the following N Non interruptible Execution of this trigger is not interruptible l Interruptible Execution of this trigger can be interrupted by any trigger including itself H Holdable Execution of this trigger continues for as long as the trigger is present repeating itself if necessary The execution stops immedi ately when the trigger is no longer present In the DS and RS modes there are 8 direct triggers 001 008 corresponding to T1 T8 In the BS mode there are 128 direct triggers 001 128 corresponding to the binary code on T1 T7 In addition to the direct triggers there are also indirect triggers An indirect trigger can be activated only by jumping from
10. confirmation byte Play File DTE Sends F is the three digit file number System Confirms f is the same file number as above If the file exists it will be played once If the file does not exist the system will simply ignore the command If the system is playing paused when the F letter is received it will return the error code e instead of f At this point the command should be aborted You should use the Stop Playback command to stop the currrent playback first before starting a new one Loop File DTE Sends L is the three digit file number System Confirms l is the same file number as above If the file exists it will be played repeatedly If the file does not exist the system will simply ignore the command If the system is playing paused when the L letter is received it will return the error code e instead of I lower case L At this point the command should be aborted You should use the Stop Play back command to stop the currrent playback first before starting a new one Stop Playback DTE Sends S System Confirms s If the system is not playing paused it will simply ignore the com mand Otherwise it will terminate the current playback Pause Playback DTE Sends P System Confirms p If the system is not playing it will simply ignore the command When the system is being paused its Busy output terminal BY is still active Resume Play
11. essfully the DTE can issue one of the serial commands one byte at a time For each byte sent the DTE should expect to receive a proper confirmation within 100 ms If the confirmation is missing or invalid the whole session must be aborted Testing the Serial Port The serial port can be easily tested by using a Windows utility pro gram called HyperTerminal HyperTerminal allows you to send and receive data through the PC s serial port All you need to do is type the letters on the keyboard to send them and watch the screen for received data The first step is to create a text file called MODE TXT on the flash card Put only two letters in the file 01 This will put the player into the Serial mode of operation with a device ID 1 You may use Windows Notepad or Wordpad to do it just be sure to save the file as text only and Windows will add TXT automatically In addition to the MODE TXT file you also need to put a test sound file on the flash card For testing purpose this sound file should be called 001 WAV The next step is to connect the player to the PC using a straight through serial cable not a null modem one A straight through cable has pin 2 connected to pin 2 pin 3 connected to pin 3 and pin 5 connected to pin 5 Those are the only three pins we use Other pins whether connected or not do not matter Power up the player and run HyperTerminal on the PC This pro gram is u
12. f you want to store the maximum number of files 512 on a single flash card you should keep the filenames including the file number within 8 characters Any filename longer than 8 characters will reduce the number of files you can store on the flash card Trouble Shooting Guide Parallel Interface Related 1 Plays no sound at all 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 turn the power off for a few seconds to reset the system d Some CF cards especially if they have been used in digital cameras need to be reformatted with the FAT16 file system e The output volume may have been set too low Try turning it up 2 Plays a wrong File File numbers are not assigned properly The system is in the wrong mode due to missing or incorrect configuration file oo 3 Plays trashy sounds It s probably due to unsupported file formats such as 16 bit resolu tion or ADPCM coding Re digitize or convert the file into a sup ported format 4 Playback speed is too slow fast Unsupported sampling rates may result in wrong playback speed Re digitize or convert the file into a supported sampling rate 5 Plays a popping bursting noise once in a while The speed of the flash card is too slow Use a faster flash card or convert the file to a lower
13. gger Mode defines how the playback is to be triggered via the Parallel Interface which has 8 inputs labeled T1 through T8 All inputs are internally connected to 5V through 10K resistors If left unconnected an input is at 5V logic 1 These Trigger Modes do not apply when the system is controlled via the Serial Port Direct Trigger default In this mode each input directly triggers a corresponding file T1 File 001 T2 File 002 18 File 008 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 T8 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 Binary Trigger Use the Binary Trigger to trigger up to 128 different files ranging from 001 to 128 The Binary Trigger is often preferred when the system is controlled by an external controller because it requires less I O ports in most cases To trigger a particular file the first step is to signal the file number on T1 LSB T7 MSB The signal must be in the binary format with 5V being logic 1 and OV the ground being logic 0 For example to signal File 007 binary code 0000111 T1 T3 should be at 5V and T4 T7 should be at OV Note that as a special case the binary code for File 128 is 0000000 The second and
14. in 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 N001 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 beginning of the file instead of where it left off If both buttons 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
15. mode or the Binary Script mode When the T1 input is triggered the system start executing trigger NO001 Since this trigger is non interruptible it will always executes to the end Trigger N001 is executed as the following play file 007 turn off the Busy output wait 3 seconds turn on the Busy output play file 899 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 1000 F 123 JO00 N001 F001 J000 N002 F002 J000 N003 F003 J000 END Here file 123 will be looped since power up but can be interrupted by trigger inputs T1 T2 and T3 After interruption it always jumps back to trigger 000 so file 123 starts to loop again although from the beginning instead of where it left off DM2218C EM2218C User s Manual Page 4 of 8 Serial Interface When the serial interface is enabled all parallel inputs T1 T8 are disabled and all Parallel Modes are no longer applicable But there is a serial mode command to read the parallel inputs The serial interf
16. sampling rate Serial Interface Related 6 The DTE device receives strange characters Make sure the DTE device s serial port setting is 9600 baud 8 data bits no parity 1 stop bit 7 RS 232 does not support multiple device addressing Does the DTE device still need to send the device ID byte after send ing the initial letter A Yes It is because the protocol is designed to accommodate for possible future expansions DM2218C EM2218C User s Manual Page 7 of 8 Application Examples Using Normally Open Push Buttons DM2218C EM2218C T8 T7 T6 T5 T4 T3 T2 T1 GD VD S2 S1 OO M OOGQOOD PWR VOL POWER SUPPLY 1 Play without interruption Intended Operation Press button 1 to play file 001 once Press button 2 to 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 Ifthe button is held down at the end of the sound the sound will be played again If 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 aga
17. sually found under Start gt Programs gt Accessories gt Communications gt HyperTerminal Make a new connection on the COM port to which the player is connected with the following parameters Bits per second 9600 Data bits 8 Parity None Stop bits 1 Flow control None Now we are ready to send the following commands to the player We Type Player Responds A 2 ALT 01 a see notes below F f 0 0 0 0 1 1 At this point the player should start playing the test sound file and the test is considered successful Note that in order to type the device ID in the binary format on the PC s keyboard you must hold down the ALT key while entering the numbers on the numerical keypad make sure the NUM light is on In this test for example we need to type device ID 01 so you must hold the ALT key down press 0 1 on the numeric keypad O first then 1 then release the ALK key If you made a mistake and typed a wrong letter during the test the player will either respond with a letter e for error or not respond at all depending on the situation In this case you need to re type the command from the very beginning DM2218C EM2218C User s Manual Page 5 of 8 Serial Commands The communication protocol uses software handshake on a per byte basis That is for every byte it receives the system sends an confirmation byte to the DTE The DTE must not send the next byte until it receives the
18. uld be the only TXT file on the flash card DN Direct Non interruptible DI Direct Interruptible DH Direct Holdable DS Direct Script BN Binary Non interruptible BI Binary Interruptible BH Binary Holdable BS Binary Script SN Sequential Non interruptible SI Sequential Interruptible SH Sequential Holdable RN Round Robin Non interruptible RS Round Robin Script For Positive Trigger mode add a as the third letter For ex ample DN means Direct Non interruptible Positive Trigger For serial control RS 232 RS 485 replace the two letter word with a two digit device ID ranging from 01 to 32 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 001 008 For Binary Trigger 001 128 For Sequential Trigger and Serial Control 001 999 but limited to 512 files max Simply add the file number to the beginning of the original filename e g 001tiger wav Note that i
19. utput Minimum load is 8 Ohm Speaker Output Jack 1 8 Mono Phone Jack This is a 1 4 watt single ended unbalanced output Minimum load is 4 Ohm Busy Output Terminal BY available on internal connector P2 only This is an open collector output It drops to about 0 2V when the board is playing Maximum sink current is 100 mA When controlling an external relay with this output be sure to adda diode to protect the driving transistor System Reset Terminal RS available on internal connector P2 only Short terminal RS to the ground to reset the board Minimum reset duration is 100 ms Parallel Input Terminals T1 T8 These inputs are internally pulled up to 5V through 10K resistors and protected with 1K in line resistors The Parallel Input is enabled by default Power Light PWR The power light is turned on when power is applied Volume Pot VOL Turn the knob clockwise to increase the output volume It affects both the balanced and the unbalanced outputs Serial Port DB9 Female The Serial Port supports RS 232 and is disabled by default Typical wiring diagram for push button activation EM2218C TYPICAL WIRING DIAGRAM NOT TO SCALE COMPACTFLASH CARD SERIAL PORT T8 T7 T6 T5 T4 T3 T2 T1 GD VD S2 S1 Q OOQ i PWR VOL O 8 16 OHM SPEAKER 6 or 9 12 VDC POWER SUPPLY DM2218C EM2218C User s Manual Page 2 of 8 Parallel Interface Trigger Modes The Tri
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