Yokogawa Removable Chassis DX1000N - Manual (Page 320)

App-2
IM 04L41B01-01E
• Sampled Data Size per File
Display Data
Data size per sample × file save interval/sampling interval
The sampling interval is determined by dividing the trend interval (in seconds) by 30 (40
if the trend interval is 5 or 10 s).
Example 2: If the display data of 12 measurement channels and 24 computation
channels is recorded with a trend interval of 30 min/div (the sampling interval of
display data is 60 s) and a file save interval of 1 day (24 h)
(12×4 bytes + 24×8 bytes + 8 bytes)×24 hЧ60Ч60/60 s
= 248 bytes×24 hЧ60Ч60/60 s
= 357,120 bytes
Event Data
Data size per sample×data length/sample rate
Example 3: If the event data of 12 measurement channels and 24 computation
channels is recorded with a sample rate of 1 s and data length of 2 h
(12×2 bytes + 24×4 bytes + 8 bytes)×2 hЧ60Ч60/1 s
= 128 bytes×2 hЧ60Ч60/1 s
= 921,600 bytes
Size per File
The size per file is the sum of the size of information other than the sampled data and the
size of the sampled data.
Display Data
Example 4: If recording under the conditions of examples 1 and 2
From examples one and two, we obtain 15,498 + 357,120 = 372,618 bytes = 0.355
MB
Event Data
Example 5: If recording under the conditions of examples 1 and 3
From examples one and three, we obtain 15,498 + 921,600 = 937,098 bytes = 0.893
MB
Appendix 1 File Size of Display Data and Event Data