The new UTAS with BigShot™ offers researchers the most capable animal ganzfeld on the market. Perform flash ERG (with option to add pattern testing) with ease on any small-to-medium sized animal. Adding to its flexibility, BigShot can also be used for human clinical research as well as veterinary clinic use.

With over 40 years of electrophysiology experience, amplification with LKC’s digital biomedical amplifiers allows faithful reproduction of every nuanced recording.

Dr. Robert J. Munger, DVM, DACVO
Dr. Robert J. Munger, DVM, DACVO

Animal Ophthalmology Clinic, Ltd.

“I started with the UTAS system for ERG testing to determine not just surgery candidacy for patients with cataracts, but also to thoroughly evaluate retinal function in cases with retinopathy and vision loss. The UTAS gives my practice capabilities that exceed those of many practices. It provides the optimal results for my patients and their owners with a convenience that is unparalleled.”

Dr. Robert J. Munger, DVM, DACVO - Animal Ophthalmology Clinic, Ltd.


Upgrades & New Features


The UTAS now has a reduced footprint and features three noticeable upgrades in its hardware and functionality

Pattern-Based Test Monitor:  The CRT pattern monitor has been replaced with a high-quality LCD Monitor carefully selected and driven in a manner to clinically eliminate customary flash artifacts common to LCD displays and to maintain the superior performance formally only found in CRTs


New UTAS Interface: The MGIT or Isolation Transformer and the UTAS Interface were combined into one unit and will now take only half the space

UBA Biomedical Amplifier

Completely redesigned UBA amplifier offering six differential channels with 24 bit A-to-D conversion using a native USB connection.

The previous UBA had an amplifier unit attached to the UBA interface unit via a fiber-optic cable, which was then connected to the computer through a separate USB cable.

Windows 10 Compatibility

The enhanced UTAS system is now fully Windows 10 based allowing the UTAS to benefit from the latest PC technology and associated security enhancements

Key Specifications

  • Flash stimuli from -50 dB to +4 dB in any color
  • Total flash range from -75 dB to +25 dB in 1 dB steps
  • Background luminance 0.005 to 1000 cd/m² in any color
  • Great for small- to medium-sized animals and humans
  • ISCEV Standard ERG / EOG / VEP
  • Double flash, On/Off, S-Cone, photopic negative response, scotopic threshold response ERGs
  • BigShot™ Color LED Ganzfeld
  • UBA-4204 Digital Biomedical Amplifier

BigShot Features

  • Latencies and amplitudes of ISCEV standard ERGs match results from legacy LKC products. No need for new normative data.
  • 3 red EOG fixation LEDs in ±15° horizontally. Brightness adjustable over 20 dB range in 256 steps.
  • Uses Red (627 nm), Green (530 nm), Blue (470 nm), Amber (590 nm) and white LEDs and Xenon flash.
  • Flash luminance range of 100 dB (+25 dB to -75 dB) in 1 dB steps.
  • Xenon flash luminance of 2.5 – 800 cds/m² (0 dB to +25 dB).
  • LED flash luminance of 2.5  10-5 – 6 cds/m² (-50 dB to +4 dB) in any arbitrary color. LED flash luminance of -75 dB to +12 dB in white.
  • Flash duration <5 ms.
  • Background light from 0.005 to 1000 cd/m in 0.01 dB increments in any color; In white as low as 10-6 cd/m²
  • Flicker stimuli to +10 dB; 1 Hz repetition rate for intensities > +10 dB
  • Long duration flash (On/Off response) stimuli programmable to 6.5 seconds in 5 ms increments, adjustable intensity and chromaticity.
  • OPTIONAL: Fully isolated Trigger In and Trigger Out signals for interfacing to other equipment
  • 2-Channel Rodent Manipulator. See More
  • Animal Temperature Controller – ATC 2000. See More
  • Rodent Electrodes. See More