IM 701510-01E
13-7
Saving and Loading Data from the SCSI Device
(for DL1520L
with suf
fix code -C4)
13
13.3
Saving and Loading Waveform Data
Explanation
Auto naming function: AutoFile
If “AutoFile” has been set to “ON”, a number (3 digits, starting from “001”) will be
assigned to the waveform data automatically when the data is saved. It is possible to insert a
common file name (up to five characters) before the assigned number by specifying the file
name using “FileName”.
Selecting the data format in which to save data: Data Type
The data format can be selected from the following.
P-P
Converts the displayed waveform data (P-P compressed data) to binary data and
saves it.
ACQ
Converts the waveform data stored in the acquisition memory to either binary or
ascii data and saves it.
BIN
: Converts to binary data
ASCII
: Converts to ascii data
Computed waveforms can only be saved in the P-P format.
When in single (N) mode, displayed P-P data will be saved.
Saving the waveform data (ACQ) in ASCII data format while displaying the power
spectrum (FFT), also saves the computed result of the power spectrum (FFT).
Selecting the waveform to be saved: Source
When P-P is selected as the data type, the waveform to be saved can be selected from the
following. X-Y waveforms cannot be saved.
TRACE1 to 4
One of the input signal waveforms and computed waveforms displayed
as trace Nos. 1 to 4 is output.
ALL TRACE
All displayed waveforms are output.
When ACQ is selected as the data type, the waveforms to be saved are the input signal
waveforms displayed as trace.
About the saved data
For a description of the format of the data to be saved, refer to Appendix 5 “Output Data
Format used When Saving Waveform Data” (App-12).
Data is saved in the directory which corresponds to the data’s format type, with one of the
following extensions added. The directory is created automatically when the medium is
formatted by the instrument or when data is saved.
Data format
Directory name
Extension
P-P
DL_MISC
.WVF
ACQ
DL_WAVE
.WVF
When saving data, a header file (which contains information in ASCII format necessary for
analysis of the saved data) is also saved. The file name used for the data is also assigned to
the header file, and a “.HDR” extension is added. The header file is saved in the same
directory as the corresponding data.
Data size
Data size will vary according to the save format, the number of waveforms (channels), the
record length, and other such factors.
For DL1540L, if acquisition-memory record length is long, an ACQ data save may require
more than one medium. In this case you should be sure to format another medium before
beginning the save. If you insert an unformatted disk during the save procedure, an error
message will appear and the save will abort, so that you will have to reexecute the save from
the beginning.
The “approx. 7K” shown below denotes memory used for storage of setting data.
Values are given in bytes.
Data format
Data size
P-P
4096 x CH x N + approx. 300
ACQ
record length of acquisition memory x CH x N + approx. 7K
* “N” indicates the number of trigger repetitions in single (N) mode; for any other mode, N=1.
