In BioSigRZ, ABR signals are sometimes acquired at 200 kHz

Tech Note: TN0884
Product: BioSigRZ
Version: All
Date Added: 2010-10-22

Issue

If you make changes to the Stimulus parameters prior to recording, acquisition from the preamp will occur at 200 kHz instead of 25 kHz, resulting in more high frequency noise in the recordings. To see if this is happening, open the saved waveform from the history plot. If the frequency range goes to 100 kHz then the data was recorded at 200 kHz.

Workaround

If you experience this behavior, open Setup > Acquisition and click OK before you begin your recording.