BIOPAC® Systems, Inc. Logo

101 – Transducer Calibration and Signal Re-Scaling

AcqKnowledge software allows users to rescale any analog signal being acquired. Instead of simply measuring voltage, input signals can be scaled and renamed to more meaningful units. The rescaling function can also be used to calibrate a force transducer or similar device so that the recorded data matches the physical measurement of the transducer—the only requirement is that the data being acquired is an analog signal. Analog channels are the most common type of acquired channel and should be used to acquire any data with continuous values. The range of input values for analog channels using the MP150 is ±10 Volts.

There are various applications and uses for calibrating and rescaling different signals. A general knowledge of the three applications listed below will help address and hopefully solve any problems you might run into.

Note: The calibration and signal rescaling procedures detailed in this application note are intended for AcqKnowledge 4.0 and earlier; for AcqKnowledge 4.1 and higher, it’s recommended to use the MP150 > Set Up Channels > Add New Module feature, which automatically scales the signal based on the selected transducer or hardware. If additional scaling modifications are desired, they may be manually applied via the “View by Channels > Setup” option.

Associated Applications

Spotlight On
MR Safe airflow interface

Airflow Subject Interface for MRI

The AFT35-MRI is a low profile mouthpiece and non-rebreathing T-valve assembly specifically designed to fit inside an fMRI head coil.* Use the AFT35-MRI to perform the following airflow and lung volume tests: End Tidal CO2 VO2 max Breath-by-breath Air Flow Breath-by-breath Volume Metabolic Studies The assembly includes a Luer lock port for easy interface to […]

View All
Latest News

BIOPAC Ranked #1 for Physiology Experiments by HAPS Members

The Human Anatomy & Physiology Society (HAPS) found that BIOPAC’s Student Lab System (BSL) and AcqKnowledge software were the number one ranked data acquisition and analysis systems for physiology experiments performed in introductory A&P labs. According to HAPS surveys conducted in 2013 and 2016, BIOPAC products are used and preferred by members in more labs than […]

Integrating Eye Tracking Data with Neuromarketing Parameters

Hardware and software packages from BIOPAC allow commercial consumer marketing teams to easily combine precise eye tracking data with physiological data recording. Here are a few notable studies recording physiology with eye tracking data: Predicting Advertising Success: While neurophysiological methods have become increasingly popular to better understand marketing phenomena among academics and practitioners, the success of […]

Read All
Request a Demonstration
Request a Demonstration