Yokogawa Button Operated MV2000 - Manual (Page 286)

App-3 M-4660
Appendix
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App
Index
CF Card Recording Length
Here we will estimate how long the MV can record to a CF card when automatically
saving measured data.
Display Data
CF card recording length (estimate) = (CF card size/file size)×file save interval
Example 6: We will estimate the CF card recording length under the conditions
given in examples 1 and 2. We assume the CF card size to be 256 MB.
256 MB/1.639 MB×24 h
≈ 3,748 h
≈ 156 days
Event Data
CF card recording length (estimate) = (CF card size/file size)×data length
Example 7: We will estimate how often we will need to replace the CF card under
the conditions given in examples 1 and 3. We assume the CF card size
to be 256 MB.
256 MB/4.073 MB×2 h
≈ 125 h
≈ 5.2 days
Note
If you format a 256-MB CF card, you will be able to use approximately 246 MB.
Internal Memory Recording Length
If you are manually saving measured data to the internal memory, old data will be
overwritten when the internal memory becomes full. You must save the measured data to
a CF card before the data is overwritten.
Display Data
Internal memory recording length (estimate) = (Internal memory size/file size)×file
save interval
Example 8: We will estimate the internal memory recording length under the
conditions given in examples 1 and 2. We assume a standard internal
memory (80 MB).
80 MB/1.639 MB×24 h
≈ 1,171 h
≈ 48 days
Event Data
Internal memory recording length (estimate) = (Internal memory size/file size)×data
length
Example 9: We will estimate the internal memory recording length under the
conditions given in examples 1 and 3. We assume a standard internal memory (80
MB).
80 MB/4.073 MB×2 h
≈ 39 h
≈ 1.63 days
Appendix 1 Data File Size