For Your Safe Flight
Page 55
Diagnostic Messages, Fuel Flow
The following displays indicate a malfunction in the Fuel Flow Option
transducer or associated electrical connections:
0.0 GPH
Zero’s indicate Fuel flow is too low to register
---
GPH
Dashes indicate No fuel flow transducer signals
---
H.M
Dashes indicate No fuel flow transducer signals
GPS Interface Diagnostics
Parameters
REQ, RES,
&
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
parameters
REQ, RES,
&
MPG
are missing.
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
parameters
REQ, RES,
&
MPG
are missing.
GPS receiver has insufficient signal for
valid data.
NO - WPT
message and
parameters
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.
Navigation Data Ports for GPS Comm
(These ports are completely independent of the EDM serial data output
port.)
Navigation Data (output of GPS; input to EDM)
Compatible with RS-232, TTL, RS-423, RS-422 SDA.
Serial data format: 8 data, 1 start, no parity. Baud rates: 1,200, 4,800,
or 9,600 depending on the GPS data output format. The EDM
automatically detects the GPS data output format and is independent
of the GPS-C setting.
