Hioki MR8740-50, Instruction Manual

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Information for Reference Purposes
Maximum recordable time when the real-time save is enabled (values
for reference purposes)
The maximum recordable time is expressed in the following equation.
(Maximum recordable time) = [(Recording capacity) × (Sampling time)] ÷ [(Number of
channels used) × 2]
(Number of channels used) = [(Number of analog channels other than Model MR8990) + (Number of logic
modules) + (Number of Model MR8990 channels)] × 2 + (Number of real-time
calculation channels) × 2
The maximum recordable times for saving data to each storage device are shown in the following
table (assume that each storage device is empty). Since no capacity of the header of a waveform
file is included, use about 90% of the recordable time provided in the table as a reference.
Some conditions allow a long-term recordable time (one year or more, shaded areas in the tables)
to be set; however, the operation cannot be guaranteed because the warranty period or product life
may disturb it.
For saving data on the built-in SSD
d: days, h: hours, min: minutes, s: seconds
Sampling rate
Number of channels used
4 (16 channels) 8 (32 channels) 16 (64 channels) 27 (108 channels)
5 MS/s* 50 min 00 s – – –
2 MS/s
2 h 5 min 00 s 1 h 2 min 00 s – –
1 MS/s 4 h 10 min 00 s 2 h 5 min 00 s 1 h 2 min 30 s –
500 kS/s 8 h 20 min 00 s 4 h 10 min 00 s 2 h 5 min 00 s 1 h 2 min 30 s
200 kS/s 20 h 50 min 00 s 10 h 25 min 00 s 5 h 12 min 30 s 2 h 36 min 15 s
100 kS/s
1 d 17 h 40 min 00 s 20 h 50 min 00 s 10 h 25 min 00 s 5 h 12 min 30 s
50 kS/s 3 d 10 h 20 min 00 s 1 d 17 h 40 min 00 s 20 h 50 min 00 s 10 h 25 min 00 s
20 kS/s 8 d 16 h 20 min 00 s 4 d 8 h 10 min 00 s 2 d 4 h 5 min 00 s 1 d 2 h 2 min 30 s
10 kS/s 17 d 8 h 40 min 00 s 8 d 16 h 20 min 00 s 4 d 8 h 10 min 00 s 2 d 4 h 5 min 00 s
5 kS/s
34 d 17 h 20 min 00 s 17 d 8 h 40 min 00 s 8 d16 h 20 min 00 s 4 d 8 h 10 min 00 s
2 kS/s 86 d 19 h 20 min 00 s 43 d 9 h 40 min 00 s 21 d16 h 50 min 00 s 10 d20 h 25 min 00 s
1 kS/s 173 d 14 h 40 min 00 s 86 d 19 h 20 min 00 s 43 d 9 h 40 min 00 s 21 d16 h 50 min 00 s
500 S/s 347 d 5 h 20 min 00 s 173 d 14 h 40 min 00 s 86 d19 h 20 min 00 s 43 d 9 h 40 min 00 s
200 S/s
868 d 1 h 20 min 00 s 434 d 0 h 40 min 00 s 217 d 0 h 20 min 00 s 108 d12 h 10 min 00 s
100 S/s 1736 d 2 h 40 min 00 s 868 d 1 h 20 min 00 s 434 d 0 h 40 min 00 s 217 d 0 h 20 min 00 s
50 S/s 3472 d 5 h 20 min 00 s 1736 d 2 h 40 min 00 s 868 d 1 h 20 min 00 s 434 d 0 h 40 min 00 s
20 S/s 8680 d 13 h 20 min 00 s 4340 d 6 h 40 min 00 s 2170 d 3 h 20 min 00 s 1085 d 1 h 40 min 00 s
10 S/s
10000 d 8680 d 13 h 20 min 00 s 4340 d 6 h 40 min 00 s 2170 d 3 h 20 min 00 s
5 S/s 10000 d 10000 d 8680 d13 h 20 min 00 s 4340 d 6 h 40 min 00 s
2 S/s 10000 d 10000 d 10000 d 10000 d
1 S/s 10000 d 10000 d 10000 d 10000 d
*: You can set the sampling rate at 5 MS/s only if the number of channels to be saved is 12 or less.
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Appendix