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 should 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 if 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.
a. File numbers are not assigned properly.
b. The system is in the wrong mode due to missing or incorrect
configuration file.
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 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.
