44
The ARF200 writes all data to internal memory as a file. The recorded data is copied to the CF
card at a preset interval and when recording in a file is complete.
Limitations on internal memory
•
File size
. When data reaches the maximum file size in internal memory, the file is completed.
File sizes can be calculated by the following formula:
File size = Data size x number of channels x number of recordings
Data size is normally 4 bytes in binary expression and 6 bytes when the data format is
“
max/min
”
.
When recording ends when recording conditions are not established, the STOP key is
pressed or the power is turned off before the maximum file size is reached, recording is
concluded at that time.
Number of
Groups Used
Max. File Size
(KB)
Number of
Recordings
When 12 Points
Are Used
(4-byte data)
1 3904
83280
2 1920
40960
3 1216
25940
4 896
19110
5 704
15010
6 576
12280
Note)
If a file is saved in CSV format, the numbers of records listed above will be the approximate
number of lines. For example, if 12 inputs are used by 3 groups, the number of lines per file is
approximately 25,940.
If the number of lines is limited by the spreadsheet software, etc., change the number of
records (the number of lines) by resetting the recording cycle, referring to “Setting file size” in
11.5, “File settings.”
•
Number of files
. The maximum number of files that can be saved in the internal memory is
250. For files per group, divide 250 by the number of groups and round down.
•
Total capacity for files
. The total file size that can be saved in the internal memory can be
computed by: 64 KB × (125 ÷ (Number of groups) – 2). If the data exceeds this size, files will
be deleted, starting with the oldest.
About internal memory
