SIRIUS
®
TECHNICAL REFERENCE MANUAL
8.2.2.5. Software synchronisation
When the data that we get from asynchronous devices includes also a time-stamp, DEWESoft® can do
a so called software synchronisation. In this case, the channels will still be asynchronous and will have a
time delay relative to other synchronous channels, but at least the time-drift will stay almost constant.
The DS-NET plug-in will always use soft sync for asynchronous channels. Image below “ Soft sync ” shows
3 channels of 3 different DS-NET systems. DSNET1 and DSNET2 are connected via hardware sync cables
(DSNET3 is not). We do not use any analog device. You can see that the channels of the synchronised
systems DSNET1_Voltage, DSNET2_Voltage are perfectly aligned to each other and the the
asynchronous channel DSNET3_Voltage of the 3rd (not hardware-synchronised) system is delayed by
some milliseconds (which is often acceptable when you are measuring slow signals). Even if you leave
that measurement running for days and weeks, the time drift will stay almost constant.
Soft sync
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