BioSigRP freezes or displays a flat line in the multi-plot during averaging

Tech Note: TN0126
Product: BioSigRP
Version: All
Date Added: 2004-05-04

Issue

BioSigRP might freeze or display a flat line in the Running Average or EEG plot during averaging, if:

  1. The preamp is not connected and turned on.

  2. The stimulus or acquisition circuit (RCO file) is not compatible with the selected device.

  3. The configuration file is damaged or corrupted.

  4. Channel 2 circuit components are erroneously being read and preventing the SGI from completing.

  5. Length of sound output sig file for Channel 1 does not match length of Channel 2 file.

Solution

The stimulus or acquisition circuit (RCO file) is not compatible with the selected device:

Problems will occur if the sampling rate and/or the number of analog I/O ports accessed in the RCO does not match the acceptable sampling rate or number of analog I/O ports for the device. For example, the Record25KX4.rco includes four channels of acquisition and the RP2.1 has only two analog inputs. Also, the Record50KX2.rco uses a sampling rate of 50K and the RA16 accepts a maximum sample rate of 25K on the A/D inputs.

The configuration file is damaged or corrupted:

The configuration file can be damaged or corrupted anytime BioSigRP crashes. Using a damaged file can cause a variety of problems and might cause the software to crash. Recreating and using a new, but identical, configuration file can eliminate the problem. If this solves your problem be sure to delete the corrupted or damaged configuration file.