Juniper Systems Trimble Lassen GPS Expansion Pod - Manual (Page 7)

GPS Expansion Pod
your Field PC to match your program. If you change
the settings on your Field PC, tap on Apply Settings.
The COM Port and Data Bit are set and not
changeable on the Field PC. All GPS programs that
offer these settings to be changed must be set to the
following Field PC settings.
COM Port: 3
Data Bits: 8
6.
Connect the GPS. The Field PC must be outside
in clear sky conditions (this means free from tree
foliage, buildings, power lines, etc.) to receive a new
GPS almanac. The receiver can take up to 20 minutes
to establish and receive the almanac.
Note: If your parameters do not match, some GPS programs (i.e.
ArcPad, TerraSync) produce an error message when attempting
to activate the GPS Expansion Pod. This error means the
communication parameters in the GPS Setup Program do not
match the GPS Expansion Pod. Go back to the setup page and
check to make sure those settings are the same settings as the
settings on your Field PC’s GPS Receiver Port Settings screen.
If they are not the same settings, change them so they match.
GPS Data Formats
In the GPS Pod Setup program, you can set up the receiver
in either the TSIP or NMEA GPS data format.