J.P. Instruments EDM-900 Installation Manual page 54

FAA Approved Installation Manual for the
EDM-900 and EDM-930
Primary Engine Data Management System
Programming
Depressing the LF and STEP buttons simultaneously enters the program mode to enter fuel quantities, display
scan rate, OAT display to °F or °C, EGT digital display resolution to 1 or 10° and other setup parameters. Exit by
depressing STEP. If either the STEP or LF buttons are not pushed for three minutes and the rate is not "0", the
EDM-900/930 will revert to automatic scan mode. Depressing the STEP button will stop the automatic mode and
revert to manual mode. Refer to the EDM-930 Pilot's Guide Rev. C or later for additional operating information.
EDM- 930 Remote Alarm Display (RAD)and EDM-900 Remote Annunciator Light (RAL)
RAD for the EDM-930 is a 0.2" high, 8 character independent display and for the EDM-900 the RAL is a
combination Red/Yellow light. The RAD or RAL will still function if the main display is inoperable. On the EDM-900
and EDM-930 only primary instrument alarms are indicated.
The RAD or RAL is located in front of the pilot within the primary flight instruments and displays caution and limit
exceedance when any of the parameters has reached its preset trigger point. On initial startup or whenever power
is turned on, the words "EDM-930 PRIMARY" is displayed, followed by the make and model of the aircraft for which
the primary limits are set.
Alarm Limits
Whenever a parameter reaches the programmed caution trigger point, the main display will flash. Tapping the
STEP button extinguishes these warnings.
Similarly, whenever a parameter reaches a programmed limit value, the display and the RAD will flash. Tapping the
STEP button will extinguish the red display warnings on the main display but the RAD will also continue to flash the
acronym until the parameter is not at or beyond the limit value.
Primary alarm limits for each specific aircraft model are set by JPI and are not programmable by the pilot. These
include some or all of the following: CHT, CDT, EGT, O-T, O-P, F-P, QTY-LF, QTY-RT, MAP, RPM, FF, CARB,
and TIT. The primary functions for your installation are shown on the Primary label on the back of the instrument
and are identical to those specified in the FAA Approved Airplane Flight Manual/Pilot's Operating Handbook (POH).
For caution alarms, primary digits and acronyms are flashed in amber at the original manufacturer's published
caution points or, if none is specified, at a specific temperature below the programmed limit.
When a caution range is reached, the pilot can momentarily depress the STEP button to extinguish the particular
flashing alarm. If another parameter has also reached its limit, that label will then begin to flash. The pilot should
continue to monitor the affected functions as he would if a conventional analog display had reached a limit. The bar
graph functions of CHT, EGT, and TIT remain displayed at all times
Alarm priority list.
21. OILP_LO.
22. FP_LO.
23. OILT_HI.
24. CHT.
25. TIT.
Dimming
Automatic dimming is provided to dim both the panel display and the remote alarm. Dimming can also be
accomplished manually. Tapping the far right hand button (labeled Dim) decreases brightness. Continuously
holding this button increases brightness. Manual dimming overrides the automatic dimming feature. When
switching electrical power off and on, the system defaults to automatic dimming.
26. FLVL. (Fuel Level)
27. REM.
28. FP_HI.
29. MAP.
30. DIF.
Page 54 of 56 Rev I
31. CLD.
32. RPM.
33. OILT_LO.
34. VOLTS.
35. OILP_HI.
Report No 908
Date 10-9-2012
The
36. AMPS.
37. CDT.
38. RES.
39. EGT.
40. FF.