EM38A / EM38A-R / EM38A-X User’s Manual
Page 7 of 8
Application Example
Using Normally Open Push Buttons
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.
- If the button is held down when the playback finishes, 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
D
I
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
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 & hold button #1 to play file #001.
- Press & 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.
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. EM38A-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. EM38A-R: Turn on multiple relays for each sound.
Intended Operation
- Press button #1 to play file #007 and turn on relays #1 & 2.
- Press button #2 to play file #008 and turn on relays #2 & 3.
Required Text in MODE.TXT
DS
N001=XN1,XN2,F007,XFF
N002=XN2,XN3,F008,XFF
END
Notes
- XFF is used to turn off all relays.
8. EM38A-X: Pre-program relays for synchronized activations
during audio playback.
The relays will be activated automatically when playing QSA
files. There is no required text in MODE.TXT.
