J.P. Instruments EDM 900 Pilots Guide - Manual (Page 35)

For Your Safe Flight Page 35
Resetting ‘USD’
USD is automatically reset whenever you perform REFUEL on your EDM
(except if TRIP mode = yes).
After filling your tanks and prior to engine start you should inform the
EDM that the aircraft has been filled. In this case USD is automatically
set to zero.
To manually zero the amount of fuel USD at any time, manually STEP
to display USD and then hold both DIM (button 3) and EGT/FF (button 4)
until the display shows ‘USD 0.0 GAL ’ (this normally takes about five
seconds).
Trip Mode (Accumulate Trip Totalizer)
Trip mode is typically used if you want to track the total fuel used over a
multi-stop cross country. To have the USD parameter continuously
accumulate total consumed fuel, set TRIP? Y. ‘Trip Mode’ is described in
the ‘Program Mode section’. Note: typically, TRIP? is set to ‘N’ so that
USD will be reset every time you fuel the aircraft.
Scanner Fuel Flow Display Select
Button four selects three different Scanner filters - ALL, EGT or Fuel.
Tapping this button will select the next choice (shown after the ‘/’ symbol):

ALL/TEMP: all installed parameters are shown in Scanner (and
battery voltage).

TEMP/Fuel: only the installed temperature parameters are
shown in Scanner.

Fuel/ALL: only fuel flow parameters are shown in Scanner.