Avionics Innovations DMP-100 (MP3 Player) Installation Manual - Manual (Page 9)

DMP-100 INSTALLATION GUIDE PAGE 9 OF 20
P/N DMP010 V1.7
3.3.4 Jog Mode
If enabled on the memory card using the CardPrep software, Jog Mode causes four of the
available seven trigger inputs to be redefined:
- Triggers 6 and 7 are used to remotely step the DMP-100 through its menus. This is
particularly useful for helicopter installations or any installation where the pilot needs
to be able to quickly step back or ahead through the playlists and select a new track.
- Triggers 1 and 2 are used to decrement or increment the volume level. Each
activation of the trigger simulates a push-and-turn of one knob click.
If Jog Mode is to be used, it is recommended that Triggers 1, 2, 6 and 7 each be wired to
a snap-action momentary pushbutton. They may be configured as either active high or
active low, as desired.
Trigger 6 simulates a counterclockwise knob turn followed by a button press (stepping
BACK through the playlists), while Trigger 7 simulates a clockwise knob turn (stepping
FORWARD through the playlists) followed by a button press. See the DMP-100 User
Guide; document DMP020, for complete details on the operation of Jog Mode.
3.3.5 Dedicated Annunciators for Triggers 1, 2 and 3
In some applications, it may be desirable to install dedicated pushbuttons for certain
tracks. For example, pushbuttons could be labeled “Takeoff Briefing”, “Turbulence
Briefing” and “Landing Briefing.” A dedicated annunciator can be installed with each
button and can be configured to illuminate whenever the corresponding audio track is
playing. This configuration is selected in Setup mode. See the Setup description on page
14.
3.3.6 GPS Data
The DMP-100 can receive RS-232 or RS-422/485 serial data from panel-mount GPS
receivers. This feature allows an audio track to be assigned to a latitude/longitude trigger
via the CardPrep software.
The GPSIN pin should be connected to either the GPS receiver’s RS232 out pin, or to RS-
422 “Data HI” or RS-485 “Data B”. The GPS DATA IN pin will accept either TTL level
signals (0-5VDC) or RS-232 level signals (-10 to +10 VDC).
The DMP-100 is compatible with the data from most models of Garmin, UPS/AT (Apollo/II
Morrow), and Honeywell (Allied Signal/Bendix-King) panel-mount receivers. For Northstar
receivers, please contact Avionics Innovations.
3.4 Outputs
3.4.1 Audio
The DMP-100’s stereo audio outputs are ground-referenced, line-level signals with a
typical signal level of 1.8 V p-p. If isolation is required, an audio isolation transformer such
as a Triad SP-50 or a Magna-Tek TY-141P must be provided externally. Volume level is
selected from the front panel by the user, and stereo balance is selectable from setup
mode.