Juniper Systems Archer 2 User Guide - Manual (Page 61)

Ch 6 GPS/GNSS 57
3Diff The type of fix you have. Three satellites are
required for a 2D fix while four are required for a
3D fix. 3Diff means an SBAS (WAAS/EGNOS/MSAS)
signal is being used for the GPS/GNSS solution.
PDOP A measure of accuracy. The lower the number,
the more accurate the fix is.
Note: When you suspend the Archer 2, the receiver is in a
low power mode to retain its almanac. When you resume, it
takes a few seconds to get a fix.
GPS/GNSS Settings
To view or make changes to the GPS/GNSS settings or set
up an external GPS/GNSS receiver, press and hold the GPS/
GNSS status gadget on the Home screen to go to the control
panel.
Select the programs port, hardware port and baud rate
(internal GPS/GNSS uses COM8 at 115200 baud), program
access, data format, NMEA sentences, satellite systems and
module settings (update rate, baud rage, filter).
Several applications can share the COM port setup as the
GPS/GNSS program port using the GPS Intermediate Driver
(GPSID).