Magellan Trailblazer XL Reference Manual page 23

Highlight "LAST LOC" and press ENTER. Use
the UP/DOWN ARROW to select a save rate.
To turn Last Loc off, select "OFF." A check
appears next to "LAST LOC" in the menu
when any setting other than "OFF" is selected.
Default is 10 minutes.
Sampling. Sampling turns the receiver on every so often to compute a location fix,
save the fix to the buffer, then turn itself back off. You may set the receiver to turn on
every 10 minutes, every 20 minutes, every 30 minutes, or every hour. You may also
turn Sampling off.
Sampling is useful when you are travelling a simple route (one you don't really need
the receiver's help to navigate) and don't want to run down the batteries by operat-
ing the receiver continuously, but you would like some location fixes you can use to
create a return route with the Backtrack Route feature.
To use Sampling, the receiver's antenna must remain uncovered and fully visible to the
sky. If the antenna is blocked and cannot acquire enough satellites to compute a fix,
the receiver will remain on until a fix can be computed.
Highlight "SAMPLING" and press ENTER. Use
the UP/DOWN ARROW to select a sampling
rate. To turn Sampling off, select "OFF." A
check appears next to "SAMPLING" in the
menu when any setting other than "OFF" is
selected.
When Sampling is on, a reminder appears on the POWER DOWN screen.
NMEA. NMEA is the communication standard for electronic marine navigation equip-
ment such as autopilots. Your receiver can output location and navigation information
in the NMEA 0183 format. (Refer to
which message set to use.) This feature turns the output dataport on and off.
To output data, the Trailblazer XL must be connected to a compatible NMEA device
with the Power/Data Cable. The receiver must be on and computing location fixes
before the dataport and the NMEA device are turned on.
Highlight "NMEA" and press ENTER. Use the
UP/DOWN ARROW to select OFF, 0183A,
0183B, or 0183C. Press ENTER. A check ap-
pears next to "NMEA" in the menu when any
setting other than "OFF" is selected.
14
Output NMEA Data
Using Your Magellan Receiver
in Chapter 3 to determine