3700 Sagamore Parkway North . Lafayette, IN 47904 USA . Phone: (765) 423-1505
Lafayette Instrument Flicker Fusion
Operating Instructions
1.
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.
2.
Connect the black hand-held subject response swtich to the
external response connector on the rear of the viewing chamber.
3.
If external stimulus initiation is desired, connect the silver hand-
held push button to the EXTERNAL INITIATE connector on the
rear of the control chassis.
4.
If computer control is desired, connect the serial cable from
the COMM.PORT connector on the rear of the control chassis to
communication ports 1 or 2 of the computer.
5.
Once the above connections are completed, plug the wall
mount AC adapter plug into the DC POWER jack on the rear of
the control chassis.
6.
Familiarize yourself with the following menu driven controls
7.
In each mode the subject may respond by pressing either side
of the black subject response key.
A. Luminance Adjust (Figure 1)
This adjustment is only available upon powering up of the device. The stimulus luminance may be adjusted
using push button #1 to increase and push button #2 to decrease. Push button #3 will continue to the mode
selection. The luminance percentage represents the percent of the maximum stimulus luminance available.
Even though the stimulus lamps have been pre-aged to minimize decay, as the lamps age some decay in
luminance will be present, however the left and right stimulus lamps will decay at the same rate.
Figure 1: Luminance Adjust
B. Mode Selections (Figure 2)
1. Ascending Auto Frequency (>AUTOFREQ)
After selecting luminance or reset, select his mode with push button #1. 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 #1to #4 in Figure 4. Once the sweep rate is
selected, the display will show the mode that has been selected and the lower limit frequency, Figure 5.
Push buttons #1 to #4 will now perform the functions labeled below the buttons. To increase the frequency
setting use #1, to decrease the frequency setting use #2, to initiate the test use #3, and to reset back to
the mode selection screen use #4. Once initiated, the selected stimulus will activate and flicker at the
lower limit. The flicker frequency will increase at the selected sweep rate until a response or reset occurs.
When a response is made the frequency is halted and the stimulus is deactivated. Press #3 to reset for
the next test. Press #3 again to reset back to the mode selection window. If the upper limit frequency of
100.0 Hz is reached or the reset button is pushed, the stimulus is deactivated and the frequency is reset
to the starting lower limit.
4
Hand-held Subject
Response Switch