Contents Of Real-Time Messages - ashtech ZY-12 Information Supplement

4. Use the arrow keys to highlight Real Time and press 1 to call the
Measurements Output on Port A screen.
Figure 4.3. Measurements Output on Port A Screen
5. To select a message for output, use the arrow keys to highlight the desired
message and press [+] or [-] to toggle it on. Repeat this step for each
message you want to output. To disable a message, highlight the desired
message and press [+] or [-] to toggle it off.
6. Highlight the format field to and press [+] or [-] to select ASCII or binary
format. The default is ASCII. Press [e] to save the new settings and return to
the Port A Parameter Selection screen.
7. Check the Baud Rate field. If the baud rate does not match the baud rate of
the device to which the ZY-12 is connected, use the arrow keys to highlight
the baud rate field and toggle [+] or [-] to chose the correct rate.
8. Highlight Real Time and press [+] or [-] to turn on real-time output.
9. Press [e] to save the new settings and return to screen 4.
Repeat these steps for any of the other ports you want to use for data
output. You can send different messages from each port. For example, you
can set the ZY-12 to send PBEN messages through Port A and SNAV
messages through Port B.

Contents of Real-time Messages

Real-time messages are output in binary format, although MBEN and PBEN can
also be output in ASCII. Messages output in binary format have the following
structure:
"HEADER,MESSAGE ID,DATA + CHECKSUM[CRLF]"
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ZY-12 GPS Receiver