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7 Carrier Phase Data Collection
7.2.4 Time
When you specify the Minimum time for which four or more satellites
must be available, you are effectively setting a precision warning level
below which you consider the recorded data to be insufficient.
According to the precision you require, you choose a setting from the
following options:
10 minutes (the default)
20 minutes
30 minutes
45 minutes
For more information on configuring the Minimum time, see
Configuring the Asset Surveyor Software, page 172.
Counter
A counter in the Asset Surveyor software starts to measure time as
soon as four or more satellites are available.
When the counter reaches the Minimum time specified, a ‘success
beep’ sounds and a message is displayed in the status line. This
indicates that the current ‘block’ contains sufficient useful data.
If you lose lock before the end of the Minimum time, the data collected
until then may not provide the required precision during
postprocessing. Consequently, the counter is automatically reset to
zero when loss of lock occurs. It only restarts when lock is regained.
Note – The counter is active only if the Asset Surveyor software is
logging carrier phase data from four or more satellites—it does not
simply record the time that has elapsed since the beginning of the file.
164 TSC1 Asset Surveyor Operation Manual