User guide

78
15.4 INSERT / CHANGE BATTERIES
Note
High capacity NiMh rechargeable batteries are needed.DO NOT use non rechargeable alkaline batteries. The unit
provides a ‘trickle’ charge to the batteries when the unit is plugged into external power and powered ON. In case
you power the EKP with batteries, you need to recharge them later with external charger.
15.5 TROUBLESHOOTING
The following is a brief guide to some of the problems you may experience while using the EKP-IV
with common solutions.
15.5.1 Power
No Power — The power connections are loose or not fully engaged. Make sure all Power Cable
connections are secure. Make sure the power supply is operating properly. Check the fuse located
at the end of the cigarette plug. (To open unscrew the middle circle at the tip of the adaptor.)
15.5.2 GPS Fix
Position fix doesn’t change — The signal from one or more satellites has been lost; the positioning
information displayed is the most recent available.
Position fixes vary a lot — GPS accuracy is affected by several variables, the most prevalent of
which are the geometric quality of the fix. Therefore, the specified accuracy of 15 Meters RMS
in 2D is statistical, not absolute and assumes the absence of Selective Availability which was
discontinued in April 2000.
The EKP-IV is not obtaining position fixes — If the EKP-IV is using an internal GPS Receiver,
proceed to the GPS status screen:
>‘MENU’ 1 sec. + “GPS PAGE” + ‘ENTER’
Review the number of satellites in use. If zero, check that the antenna has a clear view of the