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To prevent accidental battery power loss, the GPS 45XL
will automatically shut off 10 minutes after the last key-
stroke if the unit is not tracking at least one satellite and
has never acquired a position fix.
If you have trouble initializing the receiver or getting a
position fix, check the following:
• Does the receiver have a clear view of the sky?
If there are large buildings, rocks, or mountains, if there
is heavy tree cover, the receiver may not be receiving
enough satellite signals to calculate a fix.
• Have you selected the right country/state/region
from the EZinit list?
Check for the correct approximate lat/lon on the posi-
tion page or reselect the appropriate country from the
list to restart the initialization.
• Have you moved more than 500 miles from the last
calculated position with the receiver off?
Reinitialize the receiver, selecting the country/state/
region of your new location from the EZinit list.
External Antenna
The GPS 45XL’s antenna may be removed to attach an
optional external antenna or automobile antenna.
To remove the attached antenna:
1. Rotate the knurled knob (located at the bottom left of the
antenna) toward the front of the unit one-quarter turn.
2. Pull the antenna gently away from the unit.
3. To install the antenna lead, mate the BNC connector
notches with the mounting posts and turn the knurled knob
one-quarter turn toward the back of the unit.
8
Getting Started
EZinit,
External &
DGPS Antennas
Beacon Receiver
The GARMIN GBR 21
Beacon Receiver is the rec-
ommended DPGS receiver
for use with the GPS
45XL.
Other RTCM 104 v. 2.0
receivers are compatible
with the GPS 45XL, but
may not provide complete
on-screen status or tuning
control.
GPS 45XL Manual C 8/4/98 3:05 PM Page 8