Avionics Innovations DMP-100 (MP3 Player) Installation Manual - Manual (Page 8)

DMP-100 INSTALLATION GUIDE PAGE 8 OF 20
P/N DMP010 V1.7
Example: Active Low
The annunciator lamp
functions as a pull-up
resistor. If a lamp is not
used, it must be replaced
by a resistor (1/4 W, 10K
to 47K Ohms)
Example: Active High
The annunciator lamp
functions as a pull-down
resistor. If a lamp is not
used, it must be replaced
by a resistor (1/4 W, 10K
to 47K Ohms).
Like the discrete trigger inputs, Remote Pause/Play is floating and must be pulled up or
down with an external resistor, depending on the desired active state. The input signal
may vary between 0V and 35 VDC: levels above 3.5 VDC will be interpreted as “high”,
while levels below 3.5 VDC will be “low”.
When Edge-Activated is selected, the Remote Pause/Play input works in parallel with the
front panel knob – playback may be paused via one and resumed via the other. Unlike
the front panel knob, however, playback mode cannot be cancelled by holding the Remote
Pause/Play input active.
3.3.3 Discrete Triggers
Seven discrete trigger inputs are provided, each of which can be assigned to a particular
audio track via the CardPrep software. When a trigger input becomes active, the
corresponding audio track is played. Each input can be configured independently in Setup
Mode as active high or active low. Triggers 6 and 7 can have a special function – see
“Jog Mode” below.
If more than one trigger input becomes active at the exact same time, the higher number
input has priority. For example, if Trigger 5 and Trigger 3 become active simultaneously,
the track assigned to Trigger 5 is played and Trigger 3 is ignored.
The trigger inputs are floating, and must be pulled up or down externally depending on the
desired active state. Inputs may vary between 0V and 35 VDC: levels above 3.5 VDC will
be interpreted as “high”, while levels below 3.5 VDC will be “low”.