Hioki 8860-50, Instruction Manual

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Appendix 2 Reference
A
22
Even for the same record length and number of channels, there are cases where file size may be different because of dif-
ferent Sheet settings and input module types. File size is also subject to change with functional enhancements
that may be added in the future.
Refer to "File Sizes"(p. 268) for information about the sizes of files for settings and screen image files.
Appendix 2.2 Waveform File Sizes
References
File Type Operating Function Reference
MEM File Memory Function (p. A22)
REC File Recorder Function (p. A24)
RSM Files
Real-Time Saving Function
(p. A25)
RSR Files (p. A26)
FFT File FFT Function (p. A26)
TXT File
Memory Function (p. A27)
Recorder Function (p. A28)
Real-Time Saving Function (p. A27)
FFT Function (p. A29)
MEM File Size (Memory Function) 8860-50
File size (bytes) = settings size
*1
+ data size
*2
*1 Settings size = approx. 180KB + analog channel p logic channel portion
Analog channel portion = approx. 1.2KB × saved analog channels
Logic channel portion = approx. 3.6KB × saved logic channels (0: none saved / 4: saved)
*2. Data size = data size of Timebase 1 + data size of Timebase 2
Data size of Timebase 1 = Samples on Timebase 1 × (2 × saved channels on Timebase 1
*3
)
Samples on Timebase 1 = Recording Length × 100 + 1
(Example: If the Recording Length is 25 divisions, 25 × 100 + 1 = 2501)
Data size of Timebase 2 = approx. 12KB + samples on Timebase 2 × (2 × saved channels on Timebase 2) + 1
Samples on Timebase 2 = Samples on Timebase 1 × ratio of sampling periods on the second and first Time
Axes
(Example: If there are 2501 samples on Timebase 1, and if the sampling period of Timebase 1 is 1 ms/S and
the sampling period of Timebase 2 is 10 ms/S, then 2501 × (1/10) + 1 = 251)
*3. Saved channels: Logic channels A to D count as one channel, regardless of the actual number of channels
used. When logic channels are not used, they are counted as zero.
(Example: When analog channels Unit 1 – Ch 1, Unit 1 – Ch 2 and logic channels A and B are stored, the
number of saved channels is 3)
* Refer to the Table for the data file size for Timebase 2 after acquiring Timebase 2 data quantity.
Calculating Timebase 2 data quantity:
Timebase 2 data quantity = Timebase 1 data quantity × ratio of timebases of Timebase 1 and Timebase 2
Ratio of Timebase 1 and Timebase 2: Timebase 1 / Timebase 2
Example. Recording Length = 100 div, Timebase 1 = 1 ms/div, and Timebase 2 = 100 ms/div:
Timebase 2 Data Quantity
= Timebase 1 data quantity (10000) × ratio of timebases of Timebase 1 and Timebase 2 (1 ms / 100 ms)
= 10000 × (1/100)
= 100