GEN7iB
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GEN series SYNCHRONIZATION METHODS
GEN series SYNCHRONIZATION METHODS
14
The measured signals above appear within Perception as follows:
0DLQIUDPH
0DLQIUDPH
W
Fig. 14.3 Signal phase shift introduced by t
0
alignment caused by trigger transfer delays
14.1.3 Absolute time of day synchronization
The relevancy of this synchronization is a pure user application requirement. GEN
seriessystemsaresynchronizedtothecontrollingPCwhenPerceptionmakestherst
connection to the mainframe. If the PC is connected to the internet or an intranet, the
NTP process running within the operating system allows the GEN series mainframe to
synchronize to approximately one second to the absolute time of day.
In most cases, this time indication meets the generic requirements to trace the time of
day that the recording was made.
GEN series systems store this time inside the PNRF îž’le and set the îž’le date/time to this
same time as well. However, copying îž’les from one storage medium to the next, such as
during archiving, might change the îž’le date and time listed. Perception software only uses
the date/time stored inside the PNRF recording îž’le. This information is never affected by
the adjustment that might occur while transferring the dataîž’le..
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