Hioki LR8410-20, Instruction Manual

Page: 124 / 364

4.1 Confirming Measured Values, and Starting Measurement
112
Waveforms for data that the instrument was unable to acquire from a measurement unit
or wireless logger will be shown as "stuck" at the top of the waveform screen. If communi-
cations with one or more measurement units are interrupted during measurement, the
numbers of those units will be displayed to the bottom right of the scroll bar on the Wave-
form screen.
Rendering of waveforms will stop when a communications error with a unit occurs and
while data is being restored.
[NO DATA] will be displayed for numerical and cursor value
displays, while values will be displayed for input values and the input range as appropri-
ate.
See:
" Treatment of the Waveform Display When Unable to Acquire Data and Data" (p. 33)
The instrument, measurement units, and wireless loggers are synchronized as they com-
municate during measurement. Consequently, since time will progress at each device's
own level of precision in the event that communications with measurement units or wire-
less loggers are interrupted during measurement, time differences will appear among the
three devices. In some cases, there may be discrepancies in the number of data points
captured once communications between the instrument and the measurement units and
wireless loggers are reestablished following an interruption. In the event of discrepancies
in the number of data points or time between the instrument on the one hand and the
measurement units and wireless loggers on the other, data will be restored based on the
assumption that the instrument's data is correct.
See:
"Synchronization and acquired data discrepancies" (p. A36)
• Data stored in the instrument’s 8 MWord internal buffer memory will be
restored.
• Saved data will be restored if automatically saved as waveform (binary)
data but not if automatically saved as .CSV (text) data.
• If power to a measurement unit or wireless logger is interrupted during
measurement, data collected prior to the outage will be lost.
• If power to the instrument is interrupted during measurement, data from
any measurement units or wireless loggers will not be restored.
Handling of waveform display and data when data cannot be
acquired
Synchronization and acquired data discrepancies
Data continuity may be compromised when a discrepancy occurs.