PS Engineering PMA9000EX Pilot’s Guide - Manual (Page 21)

202-920-0100 Page 21 OCT. 2010
After the music transfer is complete, the PMA9000EX will automati-
cally reset to store the files and create the new play list. Therefore it is
not advisable to upload files in flight or when the audio panel is other-
wise in use.
Note: For best results, use quality name-brand USB devices.
Different types of files, and music file programs may result in variation
in the volume level of the stored music.
The maximum transfer rate will decrease by about 1% each time the
unit is uploaded, therefore frequent music upload is not advised.
4.5 Backlighting & Contrast
The PMA9000EX has an automatic photocell dimming of the annuncia-
tion LEDs and marker lamps. Control of the text backlighting is
through the aircraft avionics dimmer.
The LCD display has backlighting controlled by the automatic photo-
cell dimming. In addition, the text inverts for nighttime mode when the
ambient light is low. As the light decreases to a dim sunlight, the LCD
backlighting will turn on, and you may notice a brightening of the LCD
under some conditions.
The contrast on the
LCD display can be
controlled for individual
preference. Activate the
LCD CONTRAST sub-
menu, and turn the outer
knob to adjust the level.
There are 10 steps, with
10 as the lowest con-
trast. NOTE: A contrast
level of 3 or 4 is opti-
mal.
4.6 A D F / D M E /
AUX Monitor-
ing
ADF, DME and AUX
(auxiliary) audio is
available when selected
through the ECAPS
graphical and data con-