Page 32
6.7.5. Span and Zero Coefficients
This section displays the Span and Zero coefficients currently stored within the flightDAQ as a result
of a linear calibration
.
Figure 5.12, Span and zero coefficients
6.8. Timestamp
This page allows the user to edit the timestamp settings of the flightDAQ. This timestamp will allow
the user to get millisecond level accuracy timestamps on the data packets. If the timestamp is
enabled it will have an effect on the maximum transmission rate.
The last read Unix time displays the internal flightDAQ time at the last time it was read, the top of
the two lines shows the Unix timestamp, and the bottom of the two lines shows the time in a user-
friendly format.
Figure 5.13, Timestamp
‘PTP synchronisation on’
checkbox
This allows the user to select whether any timestamps that may be
added to the data stream are PTP synchronised or not. Please note this
will only work if there is a PTP grandmaster on the same network as the
flightDAQ
‘Datastream timestamp’
dropbox
The user can use this to select where the timestamp is positioned in the
data stream, either none which will turn the timestamp off, start of cycle
which will place a timestamp at the beginning of all the channels and
every channel which will read the timestamp for every channel. It should
be noted that the latter 2 options will reduce the maximum transmission
speed data stream.
‘Time Format’
This chooses the time format of the device Timestamping, Either UTC
(Universal coordinated time) or TAI (Temps Atomique International)
