Thank you for your continued patronage of our products.
We have discovered a problem with the octave analysis function of the CF-3600/CF-3600A/CF-3800A that you recently purchased, specifically when the time weight is set to Impulse. We sincerely apologize for causing this situation and promise to prevent such incidents from happening again.
We sincerely apologize for any inconvenience this may cause to our customers using this product. We kindly request that you install the latest version of the software with the fix implemented. Please refer to "■ How to Upgrade" at the bottom of this page for instructions.
We sincerely apologize for bothering you during this busy time, but we would appreciate your understanding and cooperation.
If you have any questions or concerns, please contact our customer service department listed below.
Causes and symptoms of the malfunction
When performing an analysis with the time weight set to Impulse, there was a bug in the processing of the remaining levels when switching from a falling time constant of 1500ms to a rising time constant of 35ms.
When performing an "offline analysis" of octave analysis and setting the time weight to Impulse, the values for each band and the Allpass may become larger than the correct values.
Target Products
| Model name | Software Version |
| CF-3600 Portable FFT Analyzer CF-3600A Portable FFT Analyzer CF-3800A Portable FFT Analyzer |
DS-0223 Real-time Octave Analysis Software version 4.0.0.115 Before |
countermeasure
We have prepared a version that fixes the above bug.
Please perform an overwrite installation of the downloaded, updated software on your CF-3600/CF-3600A/CF-3800A.
| Previous version | Revised version |
| Prior to Ver 4.0.0.115 | → Ver 4.0.0.115 |
How to upgrade
Clicking the "Go to User Login/Registration Page" button below will take you to the "User Registration & Download" page.
"CF-3600/CF-3600A/CF-3800A Portable FFT Analyzer" on the displayed page
First-time users should click [New Registration], and existing users should click [Special User Page Login] to proceed to the CF-3600/CF-3600A/CF-3800A software download page, from which you can download the installer.
We apologize for the inconvenience caused by the login and registration processes.
Please fill in the information.
