Page 54 Engine Data Management
Calibration error. Return unit to factory.
Power down the instrument and power up again.
Transient warning messages. If they persistently
occur, return the unit to JPI for repair.
The time of the most recent flight may not be
reflected in the HOBBS meter.
The HOBBS data has been corrupted. The HOBBS
meter will be cleared.
Internal system errors. Return unit to factory.
GPS Interface Diagnostics
Measurements ‘xxx REQ’,
‘xxx RES’ and ‘xxx MPG’ are all
missing from the scan.
No communications from GPS
receiver to EDM. Possibly no
connection or aircraft GPS is off.
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.
NO - SIG message and
‘xxx REQ’, ‘xxx RES’ and
‘xxx MPG’ are all missing from
the scan.
GPS receiver has insufficient signal
for valid data.
NO - WPT message and
‘xxx REQ’, ‘xxx RES’ are all
missing from the scan.
No waypoints are programmed into
the aircraft GPS receiver.
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