Specs.pdf

Technical Specifications

MONCVONE STIMULATOR

Description of the supplies and services required to meet the Agency’s needs.

MonCvONE perimeter update with electrophysiology software

• hemisphere with 30 cm radius

• white background luminance: scotopic dynamic range of 7.0 log units up to 1400 cd/m2

• amber background (590 nm): up to 350 cd/m2

• white flash stimulation: up to 10 cd.s.m-2 with 5 ms duration

• blue flash stimulation (447nm) up to 60 photopic cd/m2

• red flash stimulation (655nm) up to 160 photopic cd/m2

• Fixation light sources: red 625 nm central and 15 degrees right and left

• Near infra-red illumination for video monitoring: 940 nm

BIOELECTRIC AMPLIFIERS

The amplifiers include controls for electrode impedance and for calibration.

They are designed to be placed close to the patient so as to minimize risks of interference.

Input impedance 1000 GOhms // 220 pF Input noise level from 1 to 800 Hz: 2.6 μV peak-peak from 1 to 25 Hz: 0.5 μV peak-peak CMRR @ 50 Hz 115 dB Input dynamic range - 3.2 mV to + 3.2 mV Admissible input DC offset - 1200 mV to +1200 mV (electrode polarization) Test of electrode impedance application of a current of 20 nA with a 25 Hz modulation ( Test of calibration injection of an input signal of calibrated amplitude Digital resolution 0.4 μV 16 bits High pass filter Programmable: 0.1Hz 1.0 Hz 10Hz Low pass filter Programmable from 25 Hz up to 1200

Hz Band reject filter Programmable 50Hz or 60Hz or none Number of channels HVM-AMPLI2: 2, HVM-AMPLI4:

4, HVM-AMPLI5: 5

Guy Foster 20 July2019