DS-2000 Frequently Asked Questions
Question number FAQ-0670
Why is it that when performing offline analysis with DS-0221 or DS-0223, the preview display time is limited to a maximum of 15 seconds?
This is because when recording with the DS-0250 throughput disk, the "Create preview file" option was not selected on the ORF file creation screen.
If you have an ORF file, you can create a "preview file" later.
■ How to create a preview file
Start up the DS-0250.
Click the File menu.
Click "Show file preview" to open the "Select preview file" page.
When you click the "Create and open preview file" button, a message will appear asking, "OK to create and open preview file?"
Clicking "OK" will display the message "...creating," and once completed, the data will be displayed in "FileView."
DS-0250 will now be terminated.

When you look at the files in Explorer, in addition to ***.orf, you will find that files with extensions such as the following have been created:
- ****.orf (data)
- ****.or1 (Preview data thinned out on 1/16)
****.or2 (Preview data thinned to 1/256)
****.or3 (Preview data thinned to 1/4096)
****.or4 (Preview data thinned to 1/65536)
Last updated: 2006-07-18