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7-18
IM 701210-05E
• Date
Automatically creates files using the date and time for the file names. (The file name
specified by File Name is void.)
Selecting Date is convenient for file management, because the file names do not overlap.
Executing the Realtime Recording
When you press START/STOP, realtime recording is started. After recording for the
specified time, the operation stops.
Aborting the Realtime Recording
Press START/STOP to abort the waveform acquisition. Realtime recording is aborted
even if it is within the specified recording time.
Saving and Loading the Waveform Data That Has Been Realtime Recorded
For details, see section 13.14, “Loading/Converting Realtime Recorded Waveform Data.”
Notes When Realtime Recording
• Realtime recording is not possible when the acquisition mode is set to Average.
• During realtime recording, only the executing/aborting of the realtime recording, zoom
display setting, and protection function are valid.
• Realtime recording is possible only when the trigger mode is set to Auto or Log.
• Cursor measurements and automated measurement of waveform parameters are
suspended when realtime recording is in progress.
• History memory waveforms, recalled waveforms, and computed waveforms cannot be
displayed when realtime recording is in progress.
• The following operations are possible on the data that is realtime recorded to the hard
disk (history memory function cannot be used).
• Cursor measurement and automated measurement of waveform parameters (up to
10 MW)
• Zooming on the Waveform
• Various computations
• X-Y display (uses compressed data)
• Saving/Loading of waveform data
• Printer output
• When realtime recording to the internal hard disk, do not connect a PC to the SCSI
connector.
• Realtime recording is not possible when action-on-trigger is ON or when the dual
capture function is in use.
• Realtime recording is not possible if the record length is less than 1 MW.
• Key response slows down when realtime recording is in progress.
• The maximum number of files that can be created in the realtime recording area of the
internal hard disk is 128. If the number of files reach 128, delete unneeded files by
operating the DL750/DL750P. You can also copy the files to an area outside the
realtime recording area of the internal hard disk or to other storage media.
• Zoom waveforms can be displayed using the ZOOM menu when realtime recording is
in progress. However, there is a limitation on the magnification (Zoom Mag)
depending on the record length.
Record Length
Possible Zoom Mag
1 MW to 10 MW
T/div in which the number of displayed points is 250 k or more
25 MW
T/div in which the number of displayed points is 500 k or more
50 MW
T/div in which the number of displayed points is 1 M or more
100 MW to 1 GW
T/div in which the number of displayed points is 2.5 M or more
7.7 Realtime Recording to the Internal Hard Disk (Optional)