AvMap EKPIV series - Manual (Page 79)

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sky and that the connections have been made properly. If less than four satellites are in use, the
GPS receiver may have difficulty receiving a fix. Try repositioning the antenna. A GPS fix requires
a minimum of three satellites and a poor Signal Quality on one or more satellites may preclude
receiving a position fix.
Verify the user setting for Fix Source is listed as Internal GPS:
> ‘MENU’ 1 sec. + “SYSTEM SETUP” + ‘ENTER’ + “FIX SETUP” + ‘ENTER’ + “FIX
SOURCE” + ‘ENTER’ + “INTERNAL GPS” + ‘ENTER’
If the EKP-IV is using an External GPS receiver, proceed to Fix functions screen:
> ‘MENU’ 1 sec. + “SYSTEM SETUP” + ‘ENTER’ + “FIX SETUP” + ‘ENTER’
Verify that the Fix Source is listed properly (External NMEA) as indicated in the System Setup section
(see Chapter 14) and that the Baud Rate is set correctly for your GPS receiver (the EKP-IV requires
9600- Baud Rate). Verify that the data cable connections are proper.
external device is not responding — The data port is not turned on or is not outputting messages
in the correct format. Refer to the external device’s user guide to determine the correct message
format. Check the Installation Settings menu and make any necessary changes. The EKP-IV may
not be properly connected to the external device. Check all connections to be sure they are
correctly made and secure.
navigate feature does not work — Blanks are displayed in the navigation data fields until a GPS
fix has been obtained; this usually occurs within a few Minutes. Also a Flight Plan must be active
to display values for navigation-related information (such as Cross Track Error) and you must be
travelling at least  Knots to display values for velocity-related information (such as GS). Activate
a Flight Plan and/or increase your speed.
Fluctuations in positioning and navigation data — Small fluctuations in positioning and velocity-
related navigation is normal.
15.5.3 When nothing else Works
The list above should allow you to solve most of the operating problems you are likely to encounter.
Simply disconnecting the EKP-IV from power for a moment may solve your problem as well. If this
does not help, try resetting the EKP-IV to the factory defaults:
> ‘MENU’ 1 sec. + “SYSTEM SETUP” + ‘ENTER’ + “FACTORY DEFAULTS” + ‘ENTER’