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J.P. Instruments EDM-930 - User Manual

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FAA Approved Installation Manual for the Report No 908
EDM-900 and EDM-930 Page 1 of 56 Rev I
Primary Engine Data Management System Date 1-18-2013
TABLE OF CONTENTS
1. Revisions ______________________________________________________________________________________ 2
2. Read This First _________________________________________________________________________________ 2
3. Instrument Labeling______________________________________________________________________________ 3
4. Operation and Abbreviations ______________________________________________________________________ 4
5. Locating and Installing the Indicator and Remote Alarm Display (RAD and Alert Light) ________________________ 8
6. EDM-900/930 Key information installation __________________________________________________________ 10
7. Routing the Wiring Harnesses_____________________________________________________________________ 11
8. Power Connection ______________________________________________________________________________ 11
9. Probe Wiring __________________________________________________________________________________ 12
10. Wiring Markings _______________________________________________________________________________ 12
11. Exhaust Gas Temperature Probe (EGT) Installation ___________________________________________________ 12
12. RADIAL Engine EGT_____________________________________________________________________________ 13
13. Turbine Inlet Temperature (TIT) Probe Installation (optional) ___________________________________________ 13
14. Cylinder Head Temperature (CHT) Probe Installation__________________________________________________ 14
15. Radial Engine CHT (spark plug gasket) _____________________________________________________________ 14
16. Outside Air Temperature (OAT) Probe Installation ____________________________________________________ 14
17. Induction Air (IAT), Compressor Discharge Temperature Probe Install (optional)____________________________ 14
18. Carburetor Probe Installation (optional) ____________________________________________________________ 15
19. Oil Temperature Probe Installation ________________________________________________________________ 15
20. Oil Pressure Sensor Installation ___________________________________________________________________ 15
21. Fuel Pressure Sensor Installation __________________________________________________________________ 16
22. Ammeter Shunt Installation _______________________________________________________________________ 18
23. General Fuel Flow Transducer Installation __________________________________________________________ 19
24. Fuel Level Sender Wiring Types ___________________________________________________________________ 20
25. Fuel Flow Totalizer, Refuel Question _______________________________________________________________ 26
26. GPS Interface _________________________________________________________________________________ 27
27. Manifold Pressure (MAP) Sensor __________________________________________________________________ 27
28. RPM Sensor installation _________________________________________________________________________ 29
29. EDM-900/930 Specifications and Limitations_________________________________________________________ 30
30. EMI Radio Test and functional check:_______________________________________________________________ 31
31. Component Parts_______________________________________________________________________________ 32
32. Weight and Balance Data ________________________________________________________________________ 33
33. Pilot Programming _____________________________________________________________________________ 34
34. Programming the HP Constant ____________________________________________________________________ 35
35. Programming the MAP __________________________________________________________________________ 35
36. Selecting Fuel Pressure Type (EDM-900 only)________________________________________________________ 35
37. Customizing Non-Primary Data (EDM900 only) ______________________________________________________ 36
38. K Factor______________________________________________________________________________________ 36
39. Fine tuning the K Factor _________________________________________________________________________ 37
40. Adjusting the K Factor___________________________________________________________________________ 38
41. Programming Accumulate Trip Total _______________________________________________________________ 38
42. Trouble Shooting _______________________________________________________________________________ 39
43. Connector Pin Assignments on EDM, J1 through J5 _______________________________________________ 41
44. Connector Pin Assignments on EDM, J1 through J5 ___________________________________________________ 42
45. J3 RPM, MP, Oil-P_____________________________________________________________________________ 45
46. Appendix A Fuel Flow install Report 503 ___________________________________________________________ 49
47. Appendix B ICA _______________________________________________________________________________ 49
48. Appendix C Connector Pin Assignments on EDM, J1-J2 Only with ARINC 429 _____________________________ 50
The Owner of the EDM-900/930 must keep this manual
J.P. INSTRUMENTS
PO BOX 7033
HUNTINGTON BEACH CA
Last printed 1/22/2013 10:53:00 AM

Table of Contents

Questions and Answers

  • T
    Theodore AndrewsAug 7, 2025
    What to do if the J.P. Instruments EDM-930 GPS display freezes or is incorrect?
    • B
      Betty PattersonAug 7, 2025
      If the J.P. Instruments GPS display freezes or shows incorrect information, it might be due to a power transient causing a processor malfunction. To resolve this, recycle the power to the EDM.
  • J
    juanedwardsAug 11, 2025
    How to fix off-scale EGT columns (too high or low) on J.P. Instruments EDM-930 GPS?
    • A
      anthonyhorneAug 11, 2025
      Off-scale EGT column readings on your J.P. Instruments GPS might occur if the EDM is in Normalize view (blue EGT scales). Return to Standard mode by holding the LF button.
  • S
    Sarah CruzAug 17, 2025
    What to do if peak is not found during LeanFind on J.P. Instruments GPS?
    • K
      Kimberly BrownAug 17, 2025
      If the peak is not found during LeanFind on your J.P. Instruments GPS, ensure Lean Find is activated and that you are not stopping while leaning. Lean at a speed of approximately 10°F per second.
  • F
    fpopeAug 22, 2025
    Why does LeanFind find a peak too soon on my J.P. Instruments EDM-930?
    • J
      Jessica YoungAug 22, 2025
      LeanFind might find a peak too soon on your J.P. Instruments GPS due to failure to pre-lean before performing LeanFind, stopping while leaning, or leaning too slowly. Continue to lean without stopping, and lean more rapidly.
  • M
    Michael CarrollAug 27, 2025
    What to do if there is a missing column in the J.P. Instruments EDM-930 GPS display during flight?
    • J
      Joshua TaylorAug 27, 2025
      If a column is missing from the J.P. Instruments GPS display during flight, it could be due to a reading that is jumping around or incorrect because the probe is removed from the line up. Replace the EGT or CHT probe shown in the error message on the next flight.
  • C
    crystal29Sep 1, 2025
    How to fix a missing column in the J.P. Instruments EDM-930 GPS display upon start up?
    • A
      Alexis WilliamsSep 1, 2025
      A missing column in the J.P. Instruments GPS display upon startup indicates that the diagnostic routine has found an open line or probe with no connection. Replace the EGT or CHT probe shown in the error message.

Summary

Read This First

Remote Alarm Display (RAD) Operation EDM-930

Locating and Installing the Indicator and Remote Alarm Display (RAD and Alert Light)

Routing the Wiring Harnesses

Power Connection

Probe Wiring

Exhaust Gas Temperature Probe (EGT) Installation

Cylinder Head Temperature (CHT) Probe Installation

Fuel Pressure Sensor Installation

Fuel Tank Calibration Setting Fuel Calibration Points

Manifold Pressure (MAP) Sensor

Manifold Pressure Calibration

RPM Sensor installation

Pilot Programming

Programming the HP Constant

Fine tuning the K Factor

Trouble Shooting

Programming

Alarm Limits

Troubleshooting Information

J.P. Instruments EDM-930 Specifications

General IconGeneral
BrandJ.P. Instruments
ModelEDM-930
CategoryGPS
LanguageEnglish

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