NEW 8 Channel 50/60Hz Mains Noise Eliminator Launched

The D400 family expands to provide 2, 4 and 8 channel solutions for mains noise removal

D400 Noise Eliminator FamilyThe first Digitimer D400 Multi-channel Noise Eliminators started shipping a little over a year ago and are being used to remove 50Hz and 60Hz mains noise in laboratories all over the world.  Initially launched in two channel and four channel variants, we are delighted to announce the immediate availability of an 8 channel version (D400-8).  The D400-8 should appeal to scientists and clinicians interested in acquiring noise-free biological signals, such as EMG, EEG or field potentials from amplifiers with 8 or more channels.

As a result of this development and the recent acquisition of the Quest Scientific Humbug, Digitimer can offer mains noise removal capabilities for single, two, four and eight channel recordings.  Further, multiple D400’s may be used in parallel to remove mains noise from 16, 32 or even more channels.

The Digitimer D400 is a family of mains noise eliminators designed for real-time removal of 50/60Hz mains noise interference from amplified biological and other signals prior to acquisition by digital data recording systems. The D400 is unique as the first multi-channel, standalone noise eliminator, that doesn’t need to be used in conjunction with any specific data acquisition system.

Multi-channel 50/60Hz Mains Noise Removal without Destructive Notch Filtering

While the method of noise removal follows the principles of other single-channel devices, such as the popular Humbug Noise Eliminator, the hardware and software algorithms used by the D400 have been developed wholly by Digitimer and are unique to this device.  For those unfamiliar with the concept of operation, the D400 receives amplified analogue voltage signals via its inputs and as these signals pass through the D400 noise eliminator, it rapidly constructs a phase-locked “mains noise template” and subtracts this from the original signal. Noise removal occurs in real-time and the noise template evolves constantly so that any changes in the amplitude or other characteristics are corrected for. Importantly, the signal pathway through the D400 is analogue throughout i.e. the input signals are not digitised at any point, thus preserving data integrity.

Not only does the D400 remove mains noise in the 50Hz to 60Hz frequency, but it is also effective at removing associated harmonics of these frequencies. Importantly, and unlike standard mains Notch filters, this method of noise removal is not detrimental to signals of interest within the 50-60Hz frequency range.

Features of the new D400:-

• Cost-effective, Multi-channel Noise Removal
• Cancels Out 50/60Hz Mains & Harmonics
• 2 Channel, 4 Channel and 8 Channel Versions
• Easy to Use, Portable & Standalone
• Analogue Signal Path with No Degradation

If you would like to learn more about the D400, arrange for a demonstration/trial or request a formal quote, please do not hesitate to get in touch with us.