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Model 12021A
MAN083
Model 12021A User Instructions
Flicker Fusion
User Instructions
3700 Sagamore Parkway North
Lafayette, IN 47904 USA
Tel: (765) 423-1505 • (800) 428-7545
Fax: (765) 423-4111
info@lafayetteinstrument.com
www.lafayetteinstrument.com
Fax: (765) 423-4111 . www.lafayetteinstrument.com . info@lafayetteinstrument.com
Rel. 7.22.15
© 2014 by Lafayette Instrument Company, Inc. All Rights Reserved-
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Related Manuals for Lafayette Instrument Flicker Fusion 12021A
Summary of Contents for Lafayette Instrument Flicker Fusion 12021A
- Page 1 User Instructions 3700 Sagamore Parkway North Lafayette, IN 47904 USA Tel: (765) 423-1505 • (800) 428-7545 Fax: (765) 423-4111 info@lafayetteinstrument.com www.lafayetteinstrument.com Fax: (765) 423-4111 . www.lafayetteinstrument.com . info@lafayetteinstrument.com Rel. 7.22.15 © 2014 by Lafayette Instrument Company, Inc. All Rights Reserved-...
- Page 2 Instrument Company). A serial-to-USB converter is required to connect with PsymLab. The Lafayette Instrument 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.
- Page 3 Model 12021A User Instructions Overview The Model 12021A Flicker Fusion is designed to test for the critical flicker fusion threshold (CFF). CFF can be used as an index of the temporal resolving power of the human visual system. The threshold of the flicker fusion is determined in the following manner: a light beam is interrupted intermittently by electronic means at a slow rate, causing it to flash or flicker.
- Page 4 Lafayette Instrument Flicker Fusion Operating Instructions With all power off, connect the DB15 cable from the CONTROL connector on the rear of the viewing chamber to the VIEWING CHAMBER connector on the rear of the control chassis. Connect the black hand-held subject response swtich to the external response connector on the rear of the viewing chamber.
- Page 5 Model 12021A User Instructions Descending Auto Frequency (<AUTOFREQ) After selecting luminance or reset, select this mode with push button #2. Once the mode is selected, select the desired stimulus for activation using push buttons #1 to #4 in Figure 3. Once the stimulus is selected, select the desired sweep rate for the test using push buttons #1 to #4 in Figure 4.
- Page 6 Lafayette Instrument Flicker Fusion Figure 3: Stimulus Selection Figure 4: Sweep Rate Selection Figure 5: Operate Window C. Stimulus Selection 1. Left - Only left stimulus flickers. 2. Right - Only right stimulus flickers. 3. Coincident - Both stimuli flicker at the same time.
- Page 7 Model 12021A User Instructions Running with PsymLab Software Lafayette Instrument Company’s PsymLab software contains three protocols that may be used to administer tests, save results along with subject information, and create reports. These protocols include: Automatic Method, Adaptive Method, and Self-Control Method.
- Page 8 Terms and Conditions Lafayette Instrument Flicker Fusion complete the Form, or call Lafayette Instrument, you will receive a Return #. Your Return # number will be good for 30 days. Address the shipment to: LIC Worldwide Headquarters Lafayette Instrument Company...
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