VERIS
™
Service Manual
EMS & FMS Stimulators
VG-119-D / 21-Jan-2017
Page 7 of 16
Power Consumption
(at max luminance)
+12 VDC
1.5 A
+24 VDC
0.5A
Performance and Operating Specifications
Internal high-resolution, color, LCOS stimulus display
1280 x 1024 pixels at 60 Hz, 75 Hz, or 85 Hz
40 microsecond response time
24-bit RGB color (8 bits per channel)
LED life expectancy of 1,000 hours
Red: 627 nm typical, half-width 20 nm at 350 mA and 25 °C
Green: 530 nm typical, half-width 30nm at 350 mA and 25 °C
Blue: 470 nm typical, half-width 20nm at 350 mA and 25 °C
Approximately 50 degree diameter field of stimulation.
Greater than 300 cd/m2 maximum luminance.
Infrared Video Eye Monitoring (FMS IV and EMS IV)
Both use IR LEDs: 850 nm dominant wavelength; half-width 45 nm at ½ intensity
Eye camera provides magnified IR image of eye for accurate alignment and monitoring
during testing.
Infrared fundus camera provides IR fundus image for accurate fixation monitoring during
testing.
Software provides for capturing and saving single frames of the fundus image. Recorded
waveform traces later can be easily superimposed upon saved fundus image images.
Patient Refraction System
Single-knob correction of spherical refractive errors with automatic compensation for
magnification/minification stimulus on the subject's retina
o
Maximum myopic correction:
-20 D SPH
o
Maximum hyperopic correction: +8 D SPH
Stimulator is mounted on an articulated arm for easy positioning (arm included).
Spot Calibrator mounts on refractor lens for convenient re-calibration using
VERIS
software The Spot Calibrator is included in every Veris™ platform
Fixation monitoring with IR fundus camera (with FMS stimulators only
)
Stimulator incorporates an IR fundus camera and an IR illumination system of the fundus
Fundus illumination uses IR LEDs at 850 nm dominant wavelength with 45 nm half-
width.
The camera lens has an adjustable aperture.
A Grid Calibrator is included with every FMS installation. It is a model eye that allows
calibration of the stimulus grid shown overlayed over the video fundus image.
