BIOPAC® Systems, Inc. Logo

Calibration in Volts, Millivolts, Microvolts

Calibration is performed prior to recording. It is assumed that the amplifier has no offset; see baseline offset if necessary.

The gain of an amplifier  indicates the factor of amplification of the input signal. If a signal’s amplitude is 1 millivolt and the gain is 10, the signal will be amplified to 10 millivolts.

1 Volt = 1,000 millivolts = 1,000,000 microvolts = 1,000,000,000 nanovolts

 These calibration instructions apply to the following amplifiers: ECG100C, EEG100C, EGG100C, EMG100C, EOG100C, ERS100C, DA100C, MCE100C.

Note the gain setting on the amplifier (usually the top switch on the face of the amplifier). Let the gain be X. Enter the following values in the Scaling dialog:

To calibrate in Volts:
CAL1    Input Volts: 0     Scale Value: 0
CAL2    Input Volts: X     Scale Value: 1
Units:   V

To calibrate in Millivolts:
CAL1    Input Volts: 0      Scale Value: 0
CAL2    Input Volts: X      Scale Value: 1000
Units:   mV

To calibrate in Microvolts:
CAL1    Input Volts: 0      Scale Value: 0
CAL2    Input Volts: X      Scale Value: 1000000
Units:   µV

Spotlight On
AcqKnowledge Workflow Action examples

Workflow Automation Licenses

Workflow—A Great Tool for Every Researcher! Automate AcqKnowledge with New Workflow Tool New automation tool significantly saves time and improves consistency with standardized procedures Workflow’s drag-and-drop interface allows you to automate and repeat the signal-conditioning and processing steps your protocol requires in an easy-to-use process without programming or scripting knowledge. Batch process multiple files with confidence […]

View All
Latest News

New Citations | BIOPAC in Psychophysiology Research

The mind and body work together in many ways and psychophysiology research provides insight to these connections. BIOPAC has a variety of systems to power your emotion, arousal, stress, cognitive assessment, group interaction, startle, and other psychophysiology research. Here are some recent studies that have used BIOPAC systems for psychophysiological research… Skin conductance, facial EMG, […]

Seenel Imaging and BIOPAC Systems, Inc. Announce a Global Partnership

           For immediate release: January 4, 2023 Amiens, France and GOLETA, California, USA Seenel Imaging SAS and BIOPAC Systems, Inc. have formed a long-term global partnership to distribute MedelOpt®, Seenel Imaging’s groundbreaking wearable neuroimaging device for the neuroscience research market. Seenel Imaging, based in France, continues its international expansion by partnering with BIOPAC Systems, […]

Read All
Request a Demonstration
Request a Demonstration