Product Manual

46
If disconnected from your Nomad GPS receiver this button has no effect
on DGPS settings.
Data View Tab
The Data View page allows you to capture
and view the GPS data being sent to
SatViewer by your Nomad GPS receiver
over the COM port. There are two formats
for data that can be viewed from this screen
depending on if you are running in NMEA or
SiRF Binary mode, as configured in the GPS
page. This feature is useful if you have a
need to view or store the raw GPS messages
as they come out from your Nomad GPS
receiver in a textual format. This feature is
for advanced GPS users who need the ability
to store the raw GPS information as ASCII
text in one large LOG file. This feature is
intended to collect up to several minutes of
data. It is not intended for extended data collection sessions.
When in NMEA mode, the data displayed is simply the raw NMEA codes
being sent over the COM port, which are displayed in their original ASCII
format.
When in SiRF Binary mode, the data being sent over the COM port is in
binary format and therefore must be converted to ASCII text before it can
be displayed in a useable format. This involves converting each binary
message to hexadecimal text and adding a text tag to each message that
explains what type of message it is.
Chars: Lists the number of characters captured to the buffer. The
maximum amount of characters that can be stored to the buffer is
approximately 64,000 characters. A ―% full‖ indicator for the used
buffer is provided for your convenience.
Capture: Begins capturing the data passing over the COM port and storing
it to a buffer.
Stop: Stops capturing data and outputs the contents of the buffer to the
screen.
Clear: Clears the buffer and any data listed on the screen.
View: Outputs the contents of the buffer to the screen while capturing data.
Save: Opens a new screen where the contents of the Data View screen can
be saved to a file.