Yokogawa Removable Chassis DX1000N - Manual (Page 12)

IM 04L41B01-05EN
1-6
Display and Event Data Recording Methods
For the setting procedure, see section 6.1 in the User’s Manual.
For operating instructions, see section 6.4 in the User’s Manual.
Type of Data to Record
You can choose to record display or event data.
• Choosing What Type of Data to Record
Record the type of data that meets your needs. Use the following examples for
reference.
Example 1: Record continuous waveform data only, just like conventional chart sheet
recording instruments.
Record display data.
Example 2: Continuously record data that is as detailed as possible.
Set the sampling interval and record event data.
Internal Memory
The measured data is partitioned and saved to files at set intervals. If the internal
memory is full or if the number of display-data files and event-data files exceeds 400,
files are overwritten from the oldest file.
Recording Conditions of Display Data
Item Description
Channel type You can set the channel type to measurement, computation, or
extended input.
Sampling interval Determined by the "trend refresh interval" (see the following
diagram). You cannot choose a display-data sampling interval that
is higher than the scan interval.
File generation Files are generated at the set file-save interval.
Files are also generated in these cases:
• When you generate a file manually.
• When sampling stops (memory stop).
• When a file is generated through the use of the event-action
feature.
• After the DX recovers from a power failure.
Memory start/stop Pressing the START key starts recording (memory start). Pressing
the STOP key ends recording (memory stop).
Trend update interval vs. display data sampling interval
Trend interval 5 s *1 10 s *1 15 s *2 30 s 1 min
Sampling
interval
125 ms 250 ms 500 ms 1 s 2 s
Trend interval 2 min 5 min 10 min 15 min 20 min
Sampling
interval
4 s 10 s 20 s 30 s 40 s
Trend interval 30 min 1 h 2 h 4 h 10 h
Sampling
interval
1 min 2 min 4 min 8 min 20 min
*1 Selectable on the DX1002, DX1004, DX1002N, DX1004N, DX2004, and DX2008.
*2 Selectable in fast sampling mode on the DX1006, DX1012, DX1006N, DX1012N, DX2010,
DX2020, DX2030, DX2040, and DX2048.
1.2 Recording and Saving Data
Time
File File File Adding data