GPS Interface Diagnostics
Measurements REQ, RES, &
MPG are all missing from the
scan.
No communications from GPS receiver
to EDM-760. Possibly no connection or
aircraft GPS is off.
NO - COM message and
measurements REQ, RES, &
MPG are missing.
Communications are received by EDM-
760/790 and the Auto-Protocol setup is
in process. Verify correct output format
setup in GPS receiver; check GPS
connections.
NO - SIG message and
measurements REQ, RES, &
MPG are missing.
GPS receiver has insufficient signal for
valid data.
NO - WPT message and
measurements REQ & RES, are
missing.
No waypoints are programmed into the
aircraft GPS receiver.
- - - REQ or - - - RES
message
Your ground track is more than 70°
from your course to the next GPS
waypoint.
For Your Safe Flight Page 53