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All Rights Reserved. Copyright © 2000, Yokogawa Electric Corporation
TI 04L01A01-02E
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About Data Storage
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Question
Answer
What is the capacity of the display
data file and event file?
Display data file only : 1.2MB
Event file only :1.2MB
Display data + Event file : Display data ; 900kB
Event file ; 300kB
What is the difference between the
display data file and event file?
What is the relationship between the
waveform span rate and data saving
period?
Please refer to “2.4.3 Description of Files”.
What is the data format?
The measured values are Yokogawa standard, 2-byte binary data.
The computed values are Yokogawa standard, 4-byte binary data.
Can the parameter settings be saved
to a removable storage media?
The settings made in both SET and SETUP modes can be saved.
How to back up the measured data
during a power failure?
Since the measured data are written to a flash ROM (non-volatile memory), there is
no limit for the backup time during power failure.
How can we find out how much
internal memory is left?
It is displayed on status display at the top section of the screen.
It is also possible to make a contact output at specified remained time (specify from
1,2,5,10,20,50,100 hours)(optional function).
As for event file, memory status is displayed by bar graph when sampling in trigger
mode.
Memory summary display also shows how much internal memory is left.
(Refer to “2.3.4 Display Types”.)
What happens when the memory is
all used?
For the display data file, the oldest data is overwritten by the latest. For event file, the
data are overwritten in the trigger-free or trigger-rotation mode. In trigger-on mode,
collected data are retained.
Memory media (FD, Zip, memory card) are not overwritten.
What happens if a media is not
inserted at auto save timing?
It is saved when a media is inserted.
How many messages are stored?
Up to 100 of the most-recent messages are displayed on message summary display.
In auto save mode, up to 100 of the most-recent messages are saved in measured data
file.
Is it possible to divide the data and
save them to separate files as
desired?
Yes. It is possible to divide data and save them to separate files by start/stop data
saving as desired.
How can I set the filenames of the
measured-data files?
DX sets each file name automatically.
It is possible to specify the folder name to store these files.
Does the data storage period vary
with the number of channels used?
Yes. The data storage period differs depending on the number of channels you set for
use in the SETUP mode.
For example, if you set DX106 to use 3 channels, the data storage period is nearly
twice longer than that of using 6 channels.
Setting the range of a channel to SKIP does not make change the data storage period.
