Gps Option; Data Recording - yellow jacket PLUS A Manual

802.11a analysis system
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Yellowjacket PLUS GPS Option
The GPS Data screen of the Yellowjacket Plus provides position
and timing information from the Global Positioning System of
satellites. The Motorola GPS receiver provides accurate infor-
mation after synchronizing with at least 3 of the 24 satellites.
The Yellowjacket Plus must have a clear view of a good por-
tion of the sky in order to communicate with the GPS satel-
lites. The GPS receiver should lock within a few minutes. The
only exception is when the unit is turned on in a new area. If
the receiver was last turned on in California and now in New
Jersey, the GPS receiver could take up to an hour to lock.
The status bar at the bottom of the Yellowjacket Plus screen
shows the current date and time (Greenwich Mean) as well as
the current latitude and longitude in decimal degrees. There
is also a separate GPS screen which shows satellite informa-
tion.
The GPS information is stored in the log file when enabled for
later conversion by Chameleon. Each record will be tagged
with GPS information if so desired.
If you require GPS time-stamping with your 802.11a measure-
ments and Yellowjacket PLUS does not display the GPS screen
or the main menu screen does not show a bottom GPS data
line similar to this:
We recommend you send in your Yellowjacket PLUS to be
upgraded with the internal GPS option. See accessories page
in this manual or contact BVS for more information.
RTC MARKER MODE
If there is no GPS module attached, the YellowJacket system
uses the internal real-time clock of the iPAQ for timing. In
addition, there is a marker that starts at 0. By pressing the but-
ton to the right of the marker value, the marker increases by 1.
These values are stored in any log files created for later con-
version by Chameleon. The screen above shows Yellowjacket
with an internal GPS receiver detected. The screen below
shows the RTC window when no GPS receiver is detected.

Data Recording

When the "record" button icon is pressed from the toolbar at
Page 9

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