Electronics International CGR-30P - Manual (Page 13)

C. CGR Display – The CGR receives, processes and displays the Serial EDC data on its TFT color
display. In addition, the CGR receives GPS data, interfaces with the Voice Warning Control Panel and
monitors the external back light control line. Also, the CGR transmits fuel data to the GPS and controls
the external Caution and Warning Lights.
The CGR reduces the number of panel-mounted instruments from around 12 to only 1. The EDC can reduce the
total number of wires routed to the aircraft instrument panel by 50 or more.
1.4 SELECT Knob and Button Operation:
SELECT Knob: The SELECT knob can be rotated or pressed.
Depending on the screen and field being viewed, rotating the knob can
move an arrow, select a digit, or change a digit’s value. Pressing the
SELECT knob will choose the highlighted item.
SCREENS Button: Pressing the SCREENS button sequences the
CGR through the four display screens (Main, Secondary, Fuel Qty and Fuel Data).
EXIT Button: Pressing the EXIT button will exit you out of a specific operation. Repeated presses will exit you
out of the current screen and return you to the Main Screen.
1.5 Display Dimming:
The CGR provides an external dimming control line to dim the display. The CGR can be set to dim on any input
voltage swing. Dimming calibration is setup in the Display & Voice Controls screen found in section 7 of this
manual.
1.6 Cleaning the Screen:
The CGR incorporates a flat panel full color TFT display, which should be protected from scratches. The TFT
display should be cleaned using only isopropyl alcohol and a soft cleaning cloth. Individually wrapped lens-cleaning
tissue (used to clean glasses or plastic lenses) works best.
7