J.P. Instruments EDM 960 Twin Primary Installation Manual - Manual (Page 4)

FAA Approved Installation Manual for the EDM-960 system Report No 909
Primary Engine Data Management System Page 4 of 46 Rev D
Date 2-6-2014
5. Operation and Abbreviations
The EDM-960 is a combined electronic indicating system made up of one Display Unit and two Data Acquision Units
one mounted behind each engine. Which displays to the pilot powerplant parameters. It replaces all previous primary
digital and/or analog instruments: The display has a message area below the EGT/CHT”s Above are Abbreviation’s
used in the Message Area, the parenthesis. (X)* denotes cylinder No.
Remote Alarm Display Operation (RAD)
The RAD is composed of two (one per engine) red 0.2” high by 8 character displays. The RAD displays flashing alert
messages when any of the parameters reaches its preset trigger point, otherwise the RAD is dark. The RAD also
serves as an alert back-up if the main LCD display screen becomes inoperative. The RAD will extinguish when no
primary alarms exist or when the pilot acknowledges the alarm by tapping the STEP button on the EDM-960. On initial
startup or whenever power is turned on, the words ‘EDM-960 PRIMARY’ are displayed, followed by the make and
model of the aircraft for which the primary limits are set.
Gauge Function
Message Area
Alarm Abbreviation
Primary Primary
Engine rotational speed RPM xxxx
Engine Manifold Pressure MAP xx.x in hg
Engine Cylinder Head Temp CHT2 xxx o F
Engine Oil Temperature O-T xxx o F
Engine Oil Pressure O-P xxx o F
Fuel Pressure F-P xx PSI
Fuel Flow to engine F-F xx.x GPH
Comp. Discharge Temp. CDT xxx o F
Turbine inlet Temp. Left side TIT-L xxxx o F
Turbine Inlet Temp. Right side TIT-R xxxx o F
Single Turbine Inlet Temp. TIT xxxx o F
Non-Primary Non-Primary
Exhaust Gas Temp. EGT2 xxxx o F
Shock Cooling of CHT CLD xx o /MIN
Differential Temp. of EGT DIF xx o F
Bus Voltage Volts xx.x
Amperage Load AMPS xx
Outside Air Temp. OAT xx o F
Estimated Time to Empty Est. T to E xx:xx H:M
Fuel used to date USED xx.x GAL
Estimated Remaining fuel Est. REM xx GAL
Estimated Fuel required to Waypoint Est. WP REQ xx GAL
Estimated Fuel Remaining at Waypoint Est. WP RES xx GAL
Nautical Miles per Gallon ECON xx.x MPG
Brightness, Dim control DIM/BRT