JPI EDM-930 User Manual

55 pages

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FAA Approved Installation Manual for the Report No 908

EDM-900 and EDM-930 Page 1 of 55 Rev I

Primary Engine Data Management System Date 1-18-2013

TABLE OF CONTENTS

1. Revisions ______________________________________________________________________________________ 3

2. Instrument Marking ______________________________________________________________________________ 4

3. Primary TSO Label ______________________________________________________________________________ 4

4. Operation and Abbreviations ______________________________________________________________________ 5

5. Dimming ______________________________________________________________________________________ 6

6. Locating and Installing the Indicator and Remote Alarm Display (RAD and Alert Light) ________________________ 9

6. EDM-900/930 Key information installation __________________________________________________________ 11

7. Routing the Wiring Harnesses_____________________________________________________________________ 12

8. Power Connection ______________________________________________________________________________ 12

9. Wiring Markings _______________________________________________________________________________ 13

10. Exhaust Gas Temperature Probe (EGT) Installation ___________________________________________________ 13

11. RADIAL Engine EGT_____________________________________________________________________________ 14

12. Turbine Inlet Temperature (TIT) Probe Installation (optional) ___________________________________________ 14

13. TIT for second Turbine Inlet Temperature ___________________________________________________________ 14

14. Using the Factory original TIT Probe_______________________________________________________________ 14

15. Cylinder Head Temperature (CHT) Probe Installation__________________________________________________ 15

16. Radial Engine CHT (spark plug gasket) _____________________________________________________________ 15

17. Outside Air Temperature (OAT) Probe Installation ____________________________________________________ 15

18. Induction Air (IAT), Compressor Discharge Temperature Probe Install (optional)____________________________ 15

19. Carburetor Probe Installation (optional) ____________________________________________________________ 15

20. Oil Temperature Probe Installation ________________________________________________________________ 15

21. Oil Pressure Sensor Installation ___________________________________________________________________ 16

22. Fuel Pressure Sensor Installation __________________________________________________________________ 17

23. Adding a non-primary gauge to the system ___________________________________________________________ 17

24. Fuel Pressure Sensor Installation __________________________________________________________________ 17

25. Ammeter Shunt Installation _______________________________________________________________________ 18

26. Load Meter Configuration________________________________________________________________________ 19

27. Fuel Level Sender Wiring Types ___________________________________________________________________ 20

28. Capacitive Sender Frequency Output Type Sender System_______________________________________________ 20

29. Resistive Output Type Sender System (Float type, most common) _________________________________________ 20

30. Voltage Output Type Sender System ________________________________________________________________ 22

31. Fuel Tank Calibration Setting Fuel Calibration Points _________________________________________________ 22

32. After you have collected your data _________________________________________________________________ 24

33. Fuel Flow Totalizer, Refuel Question _______________________________________________________________ 26

34. GPS Interface _________________________________________________________________________________ 27

35. Manifold Pressure (MAP) Sensor __________________________________________________________________ 27

36. RPM Sensor installation _________________________________________________________________________ 28

37. EDM-900/930 Specifications and Limitations_________________________________________________________ 29

38. EMI Radio Test and functional check:_______________________________________________________________ 30

39. Component Parts_______________________________________________________________________________ 31

40. Weight and Balance Data ________________________________________________________________________ 32

41. Pilot Programming _____________________________________________________________________________ 33

42. Programming the HP Constant ____________________________________________________________________ 33

43. Selecting Fuel Pressure Type (EDM-900 only)________________________________________________________ 34

44. Customizing Non-Primary Data (EDM900 only) ______________________________________________________ 34

45. K Factor______________________________________________________________________________________ 34

46. Adjusting the K Factor___________________________________________________________________________ 37

Questions and Answers:

J
Jennifer FisherSep 8, 2025
What does 'BAD-PRB' mean on my JPI Avionics Display?
- J
  joseph48Sep 8, 2025
  If the JPI Avionics Display shows 'BAD-PRB', it indicates a bad probe. This is due to erratic reading and may be a poor electrical connection. Swap probes to troubleshoot.
J
Jackson DaughertySep 10, 2025
Why is peak not found during LeanFind on my JPI EDM-930?
- C
  Catherine WrightSep 10, 2025
  If Peak is not found during LeanFind on your JPI Avionics Display, it is because Lean Find was not activated or you stopped while leaning. Lean at the speed of approximately 10°F per second.
R
Robert MaciasSep 12, 2025
What does it mean if my JPI EDM-930 shows 'NO - COM' and is missing data?
- K
  Kristine LeeSep 12, 2025
  If the JPI Avionics Display shows 'NO - COM' message and ‘xxx REQ’, ‘XXX RES’ AND ‘XXX MPG’ are all missing from the scan, communications are received by EDM and the Auto-Protocol setup is in process. Verify correct output format setup in GPS receiver; check GPS connections.
J
James EdwardsSep 14, 2025
What does it mean if my JPI Avionics Display shows 'NO - SIG' and is missing data?
- C
  Charles GarzaSep 14, 2025
  If the JPI Avionics Display shows 'NO - SIG' message and ‘xxx REQ’, ‘XXX RES’ AND ‘XXX MPG’ are all missing from the scan, it means the GPS receiver has insufficient signal for valid data. Check GPS signal.