Hioki LR8410-20, Инструкция по эксплуатации

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Appendix 12 Instrument/Unit Communications Interruptions and Reestablishment
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If wireless communications between the instrument and a wireless unit or wireless logger
are interrupted during measurement, measurement data for the period of no communica-
tions will be stored internally by the measurement unit or wireless logger.
Once wireless communications are reestablished, the instrument will receive the stored
measurement data, restoring it on the instrument. The amount of data that can be
restored in this manner is limited to the capacity of the instruments’ internal buffer mem-
ory, which holds 8 MWords of data. If there are multiple measurement unit being restored,
data is progressively restored in the order in which the units are reconnected.
If communications are restored with more than one measurement unit or wireless logger,
data will be restored in order from each reconnected measurement unit and wireless log-
ger.
The maximum number of data points that can be stored for later restoration is (65,565/n),
where n indicates the number of channels, fixed to four for a wireless logger.
Table 2 provides a rough guide to the amount of time required for data to be restored. (If
the maximum number of data points that can be stored is exceeded, old data will be over-
written on the unit as new data is stored.)
When Temporarily Unable to Communicate with a Measurement Unit
IMPORTANT
• If a measurement unit is turned off during measurement, data from before the unit
was turned off will be lost.
• If the instrument is turned off during measurement, unit data will not be restored.
• If measurement is started while there are measurement units with which communica-
tions have been interrupted, measurement will resume. Measurement will start pro-
gressively and be performed in parallel, starting with the units with which
communications are established during measurement.
• Frequent communication interruptions can cause delays in the processing of data
recovery, resulting in a failure of data acquisition.