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FLICKER FUSION SYSTEM

Model 12021A

Flicker Fusion System
 
 

DETAILS

The Flicker Fusion System provides the user with a variety of versatile controls to perform accurate and timely measurements of Critical Flicker Frequency (CFF). Digital circuitry is used to provide extremely accurate frequency generation from 1Hz to 100Hz in 0.1Hz steps. The menu-driven LCD display allows for exact and repeatable frequency settings, while the serial port computer interface provides a means for test result storage and computer control of the device.

The user options include five modes of operation to cover virtually any test requirement: Ascending Auto Frequency, Descending Auto Frequency, Continuous, Discrete, and Analog Control Mode. The software program also provides three automatic protocols: Automatic Method, Adaptive Method, and Self-Control Method. The user also has control over the stimulus luminance, sweep rates, and stimulus selection.

The viewing chamber has two lights: one for the left eye and one for the right eye. The light compartments are completely separated, allowing for four stimulus combinations to occur: left eye only, right eye only, left and right simultaneously, or left and right alternately. The viewing chamber is constructed to control extraneous factors, which might distort CFF values. The white electroluminescent lamps produce even lumination over a 0.5 inch (1.27 cm) in diameter viewing area.

The stimuli are separated by 2.75 inches (6.99 cm) center to center with a stimulus to eye distance of 15 inches (38.1 cm) and a viewing angle of 1.9°. The inside of the viewing chamber is painted flat black to minimize reflection.

For countries requiring 220-230V AC 50 Hz operation - Model 12021*C is available with localized AC mains cord. International pricing will apply.

SPECIFICATIONS

  • Power Supply: 12 VDC @ .5A, 2.1mm center positive DC plug
  • Fuse: 0.5A, 5x20mm fast blow
  • Frequency: 1.0 - 100.0Hz in 0.1Hz increments with an error of .05%
  • Slide Holder: 2" x 2" (5.08x5.08 cm) 35mm holder for optional Model 12100 neutral density filters with 0.1% to 50% light transmission
  • Auto Mode Ramp Rates: options of 0.5, 1, 2, and 4Hz per second
  • Analog Input: 3.5mm mono phone plug with voltage range from 0.1 - 10 V for 1.0 - 100.0Hz flicker rate
  • Absolute Maximum Input: 14V
  • External Initiate: SPST normally open hand-held switch with RCA input
  • External Response: Dual SPST normally open hand-held switch with 3.5mm stereo plug
  • RS-232C Port Settings: 9600 baud, no parity, 8 data bits, 1 stop bit
  • Typical Luminance: 58Cd/m2
  • Viewing Angle: 1.9°
  • Light/Dark Ratio: 1:1
  • Stimulus Color: White
  • Viewing Chamber Mask: Hypo-allergenic black silicone Mask may be cleaned with an alcohol wipe.
  • Control Size: 8.625"W x 6.5"L x 3.25"H (21.9 x 16.5 x 8.3 cm) Weight: 1.8 lb (0.82 kg)
  • Viewing Chamber Size: 7"W x 19"L x 16"H (17.8 x 48.3 x 40.6 cm) Weight: 7.4 lb (3.36 kg)

RELATED PRODUCTS

Flicker Fusion System with 220V/50Hz Power Supply Image

Flicker Fusion System with 220V/50Hz Power Supply
Model 12021*C

The Flicker Fusion System provides the user with a variety of versatile controls to perform accurate and timely measurements of Critical Flicker Frequency (CFF).

* Displayed price is subject to change based on shipping location.

NEXT EVENT: ACSM 2017,  May 30, 2017 - June 3, 2017     Details >>

CONTACT US

Lafayette Instrument Company
3700 Sagamore Pkwy N
Lafayette, IN 47904

Phone: (765) 423-1505
Fax: (765) 423-4111
info@lafayetteinstrument.com

 

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CONTACT US

Lafayette Instrument Company
3700 Sagamore Pkwy N
Lafayette, IN 47904

Phone: (765) 423-1505
Fax: (765) 423-4111

info@lafayetteinstrument.com

Copyright © 2009 - 2017 Lafayette Instrument Company. All Rights Reserved.