DM3018B/EM3018B
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1. The CFG file should then be copied onto the CF card If the CFG file is missing or incorrect the board will operate in the DN mode 3 There are popping noise when playing a sound This will happen if the speed of the CF card is too slow Try to use a faster CF card or use a lower sampling rate 4 Possible causes for no sound and wrong sound a The sound file doesn t have the correct filename extension b The board is in the wrong operation mode due to missing incorrect CFG file c If the CF card is inserted when the power is on the board will not work To solve this problem turn the power off for a few seconds If this action does not fix the problem make sure the sound files are still on the CF card d Some CF cards especially if they have been used in digital cameras have a non standard format which can not be read by the board In this case reformat the CF card to the standard DOS FAT format and copy the wav files again e A mono sound will come out from the left channel only 5 Possible causes for trashy sound and sound too fast slow a Unsupported file formats such as 8 bit resolution and ADPCM compression will produce trashy sound Re digitize or convert the sound file b Unsupported sampling rates will produce sound too fast or too slow Re digitize or convert the sound file DM3018B EM3018B Us sMna EM3018B DM3018B Circuit Board Metal Endosure Specifications Operation playba2. by holding the trigger low constantly Interrupt Mode In this mode the sound does not start until the trigger goes high Any sound including the sound itself can interrupt the playback The playback will be stopped as soon as the interrupting trigger goes low but the new sound will not start until the trigger goes high Looping is not possible in this mode Hold Mode In this mode the sound plays only for as long as the trigger is held low The playback is not interruptable Looping is possible in this mode DM3018B EM3018B IrddldimGice Typical Wiring Diagram PWR O T8 T7 T6 T5 T4 T3 T2 T1 RS BY VD GD LEFT RIGHT BAL VOL I Caution Always turn off power before inserting the CF card or the board will not work Terminal Block Descriptions Power Input VD amp GD VD is voltage and GD is ground Use a well regulated power supply to obtain the best sound quality A higher input voltage will generally produce more output Speaker Output LEFT amp RIGHT The speaker output is bridged The two LEFT terminals are for the mono left chan nel and the two RIGHT terminals are for the right channel One or more speakers may be connected to the output but the equivalent impedance should be 8 16 Ohm Additional heat ventilation may be required to achieve maximum output The onboard power amp has internal current limiting and thermal protection Busy Output BY This output is internally pulled up to 5V through
3. DM3018B EM3018B TateSutirgGice 1 How to change the filename extension of a wav file In order to change the wav filename extension you must first force Windows to show it Refer to your Windows manual for instruction on how to do it The follow ing procedure is specific to Windows 2000 a Select Start gt Settings gt Control Panel and double click Folder Options In Windows 98 the Folder Options is under Start gt Settings b Click the File Types tab scroll down the list to find the WAV extension high light it and click Advanced click Edit if in Windows 98 c Check the box for Always show extension and click OK d Click Close to complete the procedure Now you can right click the file icon and select Rename to rename it If you get a warning message saying If you change a filename extension the file may be come unusable Are you sure you want to change it click Yes 2 How to create the CFG configuration file The easiest way is to use NotePad a Windows accessory Type in the configura tion letters and use Save As to save the file In the Save As window select the proper folder for Save in select All Files for Save as type and enter CFG for File name where can be any name with up to 8 letters Certain versions of NotePad also have an Encoding section for which you should select ANSI
4. a 10K R13 resistor It drops to OV 100 mA current sink when the board is playing Remove R13 for open collector Reset Input RS Connect this input to the ground to reset the board Minimum reset duration is 100 ms The current playback if any will be stopped immediately Trigger Inputs T1 T8 Either a negative pulse 5V to ground or a momentary contact closure to the ground can be used for triggering Minimum trigger duration is 100 millisecond Power Light PWR The power light should be on when power is applied Balance Control BAL BAL is the balance control with a center detent It affects only the speaker output not the line output Volume Pot VOL Turn VOL clockwise to increase the output volume It affects only the speaker out put not the line output Line Output LINE Located on the right hand side this 3 5 mm stereo phone jack provides line output for external amplification This single ended output is at a fixed level and not af fected by the volume pot or the balance control Alternate Signal Connector P2 Located on the circuit board this 12 pin 0 1 center pin header can be used as an alternate signal connector However it does not carry the audio output Pins from top to bottom are VD GD BY RS T1 T8 CompactFlash Card Programming A CompactFlash CF card reader must be used to read and write CF cards The reader connects to the USB or the parallel port of the host computer and operates li
5. ck only File Format Windows wav PCM mono or stereo 16 bit 22 05 or 44 1 KHz Maximum Number of Sound Segments Direct M ode 8 Binary Mode 128 Sequential M ode 128 Memory Type CompactFlash card type 1 5V 8 128 MB Supply Voltage 10 32 VDC regulated Audio Output 40W channel 8 Ohm load bridged output DM 3018B Dimensions 5 6 x 4 2 EM 3018B Dimensions 6 0 x 4 8 x 1 7 Direct Mode default Plays up to 8 different sounds Sound 1 first priority is activated by triggering T1 sound 2 second priority by triggering T2 and so on If multiple triggers are applied at the same time only the sound with the highest priority will be played Binary Mode Plays up to 128 different sounds To activate a certain sound apply its binary code on T1 LSB to T7 M SB with 1 45V and 0 OV Then trigger T8 to start the playback The binary code can be removed after the triggering signal goes back to high 5V The binary code for sound 128 is 0000000 Sequential Mode Plays up to 128 different sounds Sounds are activated sequentially by triggering T1 Sound 1 is played the first time sound 2 the second time and so on The sequence starts from 1 again when the next sound is absent Normal Mode default In this mode the sound starts as soon as the trigger goes low No sound can interrupt the playback A new sound can start only after the current sound is finished Looping is possible
6. ke a floppy drive Simply copy the sound wav files to the CF card However you must change the wav filename extension to a 3 digit identification number For example lion 001 indicates that it s sound 1 and frog 128 means it s sound 128 The order in which these files are written to the card is not important Files with invalid filename extension are ignored Operation Mode amp Sample Rate Configuration To select the desired operation modes you must copy to the CF card an ASCII text file named CFG can be any name with up to 8 letters which contains one and only one of the following two letter word DN Direct Normal DI Direct Interrupt DH Direct Hold BN Binary Normal BI Binary Interrupt BH Binary Hold SN Sequential Normal SI Sequential Interrupt SH Sequential Hold If the CFG file is missing or incorrect the board will operate in the default DN mode The CFG file is read by the board upon power up and reset The sound file s sample rate is automatically detected by the board Sound files on the same CF card may have different sample rates For example some sound files may be 22 KHz and some sound files may be 44 KHz
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DM3018B/EM3018B