PS Engineering PMA450 Installation Manual - Manual (Page 15)

PS Engineering
PMA450 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-450-0000 Page 2-8 Rev. 3, November 2014
2.7 User Adjustments
To access the user adjustment menus, turn the PMA450 off, and then back on. While the version screen is
displayed, push and hold the bottom line-select button (there is an indicator bar in the display indicating
that a menu is available). This places the unit into the “User Configurable Mode – home screen”. This al-
lows adjustment for:

LCD Screen Adjustment

Rename Switched Inputs

Bluetooth menus
Note: in this mode, the audio panel functions will be inoperative
2.7.1 Adjust Screen
The first items are adjustments to the Liquid Crystal Display, allowing the installer or user to tailor the con-
trast and backlight intensity to suit the cockpit conditions, and set the time period before the menus revert
to the “home” screen.
There are two screen visibility modes: LCD Brightness & LCD Contrast.
2.7.1.1 Brightness and Contrast
Adjusting either the Brightness or Contrast level requires selecting either of the two line select buttons and
then turning the inner knob. Counter clockwise to lower the number (level of Brightness & Contrast) and
clockwise to increase the number (level of Brightness & Contrast).
To change the display:
Press the line select for the desired item
Turn the small, inner knob to change the contrast and brightness as desired. Recommended set-
tings are Brightness 10, and Contrast 5.
LCD will change in real time while adjustments are made.
It will stay in this screen until the menu times out and returns to the adjustment home screen.
2.7.1.2 Display Timeout
This is a feature that allows the end user to adjust how quickly the screen levels menus timeout (revert to
main menu).
This allows adjustment of the timeout screen and can be configured from 1 second to 30 seconds when
turning the inner knob.
For a user that is unfamiliar with the product, this will give them enough time to learn the system. After
being familiar then the user can speed up the timeout screen as needed.
It will stay in this screen until the menu times out and returns to the adjustment home screen.
To exit the home screen and return to normal operation, turn the PMA450 off, and back on again.
2.7.2 Rename “Switched” Inputs
The system is factory set to default as ADF, DME & AUX as shown.
The three inputs are from top to bottom: