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Grass Technologies Comet XL PSG
Grass Technologies Comet XL PSG
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Grass Technologies Comet XL PSG


This Grass Technologies Comet XL is a complete PSG system designed to satisfy the needs of the physician's office, hospital, or medical center.


  • Ready to use, Comet XL is supplied with the latest high performance PC
  • PSG systems consist of the high response 50-channel AS40 Amplifier System
  • Grass's powerful Panorama digital video option
  • FASS Fully-Automated Sleep Stager
  • Compact design that is rugged, lightweight, and easy to use
  • On-board analog to digital conversion for interference-free recordings
  • Integrated pulse-oximeter connection providing SpO2 and heart rate
  • Easy, identifiable electrode input with the head and body diagram layout
  • Onboard impedance checking and calibrations at the amplifier system
  • Easily mounted next to a patient bed or attached to a cart
  • Limited Lifetime Warranty on Grass Technologies manufactured parts


  • Available channels: up to 50 total
  • DC Input module:  up to 8 channels 
  • Personality Module: PSG, TWin PSG record and review software, EEG 
  • Connection: any PC with the onboard Ethernet
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