BIOPAC® Systems, Inc. Logo

No cycles found

There are several possible reasons for this. The most common is that the cursor has been positioned after the last cycle in the graph window. “Find All Cycles” does not necessarily search the entire data file. It finds cycles from the current cursor position (as set by the I-beam tool) to the end of the file. Under the “Selection” tab of the cycle detector in versions of AcqKnowledge more recent than 4.2, there is a button labeled “Move Cursor to Origin”. Clicking this button may resolve the issue. For older versions of AcqKnowledge, the user should click “OK” to close the cycle detector window without erasing any applied settings, move the cursor to the beginning of the file or select all data (typing control-a – command-a on a Mac – is an efficient way to select all data), re-open the cycle detector, and choose “Find All Cycles” again. If this does not resolve the issue, then there is likely a problem with the parameters used for searching the data file. If searching for peaks in the data, the threshold may be set too high or too low such that data never cross the threshold. Ensure also that the correct channel is being searched for peaks. If searching for events, make sure that the cycle detector is searching for event marks of a type and location that exist in the file.

Page last modified 19Jan2015

Spotlight On
free BIOPAC webinar

Data Acquisition Fundamentals | Basic Training for the MP160 System

Learn how to maximize your BIOPAC data acquisition system and implement best practices for setting up and optimizing your MP System.

The presentation will cover the following:
• Demonstrate complete hardware and software setup
• Include details on how to incorporate commonly used amplifiers in the D-series, C-series, and BioNomadix
• Review legacy issues related to older system components and workarounds
• Show how to properly set up participants including proper lead options, electrode options, placement, and grounding/isolation procedures

Watch Live on February 10

Register Now
Latest News

New Citations | Does Smiling Make You Happier? & More

BIOPAC provides software and hardware that allows research teams to study any physiological measure. Here are a few notable studies using BIOPAC equipment for ECG, EDA, and HRV Analysis. Intelligent Interaction Leading to Solutions The research being done in the HCI space is amazing, as scientists continue to make computers more adept at communicating with humans, allowing more […]

Electrocardiography Guide Now Available

BIOPAC’s comprehensive Introductory ECG Guide addresses fundamental to advanced concerns to optimize electrocardiography data recording and analysis. Topics include: ECG Complex; Electrical and Mechanical Sequence of a Heartbeat; Systole and Diastole; Configurations for Lead I, Lead II, Lead III, 6-lead ECG, 12-lead ECG, precordial leads; Ventricular Late Potentials (VLPs); ECG Measurement Tools; Automated Analysis Routines for extracting, […]

Read All
Request a Demonstration
Request a Demonstration