displayed measurement from the Automatic indexing mode. It
has no effect on the displayed measurements in the Manual
indexing mode.
Measurement Indexing—without Fuel Flow Option
The EDM-760/790 steps through the engine measurements in a specific
sequence. Listed below is the indexing sequence, measurement description
and example of the digital display.
Measurement Example Comments
Voltage, System Bus
Outside Air
Temperature
14.2
81
BAT
OAT
Battery voltage and OAT °F
or °C
Difference between
hottest and coolest
EGT
80
EGT 52
DIF
DIF
Dot indicates most widely
deviating cylinder
Measurement
Example
Comments
EGT, CHT
1340
1430
376
385
EGT, left, CHT, right. Dot
indicates cylinder
TIT, Turbine Inlet
Temperature
1370
1450
TIT
TIT
Oil Temperature
177
180
OIL
OIL
TIT #2 Second Turbine
Inlet Temperature
1450
1460
TIT 2
Only one of these three
options may be installed in
the aircraft
Page 12 Engine Data Management
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