Instruction Manual

5-12
IM MW100-01E
File size: Within approximately 10 Mbyte per le
File size calculation: File size (bytes) = header size
*1
+ data size
*2
*1 Header size (bytes) = Fixed length of 1448 + no. of recording
channels × 232
*2 Measurement data size (bytes) = no. of recording measurement
channels × 4 × no. of samples
Math data size (bytes) = no. of recording math channels × 6 × no. of
samples
No. of samples = Data length (s)/recording interval (s)
Ex.) Recording interval: 100 ms; no. of measurement channels, 24; data
length, 10 min.:
Header size = 1448 (bytes) + 24 × 232 (bytes) = 7016 (bytes)
Data size = 24 × 4 (bytes) × (600 (s)/0.1 (s)) = 576,000 (bytes)
File size = 7016 + 576000
= 583016 (byte)
≈ 569 (KB)
Guideline of the sample time for the different CF card sizes (when one type of recording
interval is used):
Number of
Saved CHs
Recording
Interval
Capacity of the CF card
128 MB 512MB 1 GB
10 CHs
10 ms 8.8 hours 35.3 hours 2.8 days
100 ms 3.7 days 14.8 days 28.9 days
500 ms 18.5 days 74 days 144 days
1 s 37 days 148 days 289 days
2 s 74 days 296 days 578 days
24 CHs
100 ms 36.8 hours 6.1 days 12.0 days
500 ms 7.7 days 30 days 60 days
1 s 15.3 days 61 days 119 days
2 s 30 days 122 days 239 days
60 CHs
100 ms 14.8 hours 2.4 days 4.8 days
500 ms 3.0 days 12.3 days 24.1 days
1 s 6.1 days 24.6 days 48 days
2 s 12.3 days 49 days 96 days
5 s 31 days 123 days 241 days
File division: You can use the Event/Action function, status screen operations,
or communication commands to divide les at an arbitrary timing.
Valid when the recording start action is Direct and recording stop
action is Fullstop or Rotate.
File message: The maximum number of characters that can be specied is 120.
The le message can be viewed when the le information is
displayed on the MW100 V
iewer Software.
Write message: During execution of the recording action, a message that
corresponds to the recorded data can be included in the le.
No. of characters in message: Up to 15
Messages: 6 (messages 1 to 5, and Free)
No. of write operations: Up to 30 per le
Operation upon failure recovery:
If a power failure occurs during recording, the data up to the
failure is restored upon recovery from the failure.
The data after
recovery is recorded continuously to newly created les.
Operation when synchronizing time:
If time synchronization to SNTP
is carried out during recording,
the time is saved to the recording log le.
5.2 Main Module (MW100-E) Specifications