MM-400A
8. Operation Screens
8-37
g. HISTORY Screen
(1) History display
The HISTORY screen shows a list of measured values (presence/absence of
waveforms, date, time, schedule No., judgment result, and measured value)
obtained until now. This screen allows you to load past measured values and
save new ones to the built-in flash memory.
“~” on the left side of the screen indicates the save state of waveforms. When
you load the history of the item with “~”, waveforms can be displayed on the
WAVEFORM screen.
The MM-400A has three types of built-in memory.
• Built-in memory 1: The backup power supply holds data when the power is
turned off.
• Built-in memory 2: When the power supply is turned off without performing
backup, data is cleared.
• Built-in flash memory: Holds data even when the power is turned off. It has a
write limit (100,000).
The measured value (10 selected items in the VIEW screen) data uses the
built-in memory 1. The number of storable pieces of data is 5,000 and older
data is deleted as it exceeds 5,000 and overwrites new data. Data is held even
when the power is turned off.
All cycles and waveforms (4 selected waveforms in the VIEW screen) uses the
built-in memory 2. The maximum number of storable pieces of data is 50 for all
cycles and waveforms respectively. (The number of storable pieces of data
varies depending on the waveform measurement time. 50 is just a guide.)
Older data is deleted as the number of pieces of data is exceeded and
overwrites new data. When the power supply is turned off, data is cleared.
For measured value, all cycles and waveforms, older data is deleted as the
number of pieces of data is exceeded. Take out data via USB or
communication accordingly.
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