Operations Manual

Revision: "1" RTU5 Operations Manual
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2.2 Verifying GPS functionality
Figure 2 GPS Time Display)
When looking at the debug screen you should see the time increment while the RTU5 is running.
There is a display entry that shows a time increment every second and next to that is an entry for the
number of satellites the RTU5 sees.
For example the lines below at 17:01:03 and17:01:04 in column 1, the text next to that {17:01:17 5
50 05 01 02.03 0255 1023} and {17:01:18 5 50 05 01 02.04 0255 1023}. The first part 17:01:17 and
17:01:18 are the GPS time ticks they should be incrementing every second. The number 5 next to
the GPS time is the number of satellites that the GPS can currently locate.
The first column (17:01:17 and17:01:18) is system time in UTC, there will be approximately 14
seconds difference between UTC and GPS time.
GPS Display
GPS Time tick
# of Satellites Visible
System time
in UTC
Rep
eat color/phasegroup
“04” - # of seconds
within the phasegroup
Number of bytes left
in the repeat queue
Number of bytes left in the
hardware downlink queue
Transmit color/phasegroup
“02”
–
color/phasegroup
.