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Measurement Procedure
1. Original Signal with amplitude variations.
2. Square demodulator.
3. Weighted filter.
st
4. Low pass filter 1
5. Statistical computing.
Data available
Pst, Pst Max, Pst Min values for long term recording
Plt, Plt Max, Plt Min values for long term recording
Block 1
Block 2
Voltage
Detector
and Gain
Control
Square
Law
Demodulator
Input
Voltage
Adaptor
12.3: Setup
Initially the user must set up several parameters to properly configure Flicker. Using Communicator
EXT, from the Icon Menu select Edit Device Profile. From the Device Profile, select Flicker
Settings. The following screen will appear:
Electro Industries/GaugeTech
order.
Simulation Of Eye Brain Response
Block 3
High Pass
Filter
(DC
Removal)
Weighting
Filter
Low
Pass Filter
(Carrier
Removal
Figure 12.1: Simulation of Eye Brain Response
Doc # E107706 V1.25
Block 4
A/D
Converter
1st
Sampling
Order
Rate
Squaring
Sliding
>50Hz
Multiplier
Mean
Filter
Programming of short and
long observation periods
Output Recording
Instantaneous Flicker in
Perceptibility Units
(Pinst)
Block 5
Minimum
Output
64 level
Interface
Classifier
Output and Data Display
Pst Max/Min Pst
Plt Max/Min Plt
12-3
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