Appendix 8 Frequently Asked Questions
A24
How can I create files every
hour, from 0:00 (ideal split
time)?
Set the start time of the measure-
ment schedule to 0:00 (ideal split
time).
At the same time, set [Split Save] to
[Ref Time] for automatic saving.
"Setting Automatic Sav-
ing" (p. 102)
What is the file limit when auto
saving to removable storage?
Up to 1,000 files can be stored in
one folder. Also, as more files
are created, more time is needed
to start and stop recording.
We recommend setting
measurement conditions so that
the number of files saved stays
as low as possible. (For example,
adjust the recording time so that
the size of one file does not
become too small.)
When the number of files saved in
one folder exceeds 1000, a new
folder will automatically be created
and files continued to be saved in
the new folder (except for real time
saving).
(When saving, a folder named
"HIOKI_MR8880" is created, and
files with different data types are
saved in subfolders within it.)
"6.1 Saving & Loading
Data" (p. 147)
Is data retained in internal buf-
fer memory when I turn the
power off after measuring?
I did not use auto saving to re-
movable storage.
If waveforms are displayed when
power is turned on, the data has
been retained.
Data in internal buffer memory is re-
tained for about 30 minutes after
power-off. However, if power is off
for more than 30 minutes, the data is
lost.
We recommend making prepara-
tions and settings for power outages
during long-term measurements,
such as combined use with a battery
pack and setting automatic saving.
"Preparations and Set-
tings for Power Outages
during Long-term Mea-
surements" (p. 149)
Why is only part of the data
saved when saving to remov-
able storage after measuring?
When A/B cursors are set to specify
a save time span, only data within
that span is saved. Also, internal
buffer memory capacity limits saving
of measurement data to the most re
-
cent 4M data points (1M data points/
Ch ∗ 4ch).
If you need to save more data
points, enable real-time auto saving
beforehand.
"Specifying a Wave-
form Time Span" (p.
140)
"4.7 Setting Automatic
Saving" (p. 102)
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