Electro-Voice 1252, 250 operation manual Setup, Measurement Procedure, Data available

Measurement Procedure

1.Original Signal with amplitude variations.

2.Square demodulator.

3.Weighted filter.

4.Low pass filter 1st order.

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

		Simulation Of Eye Brain Response
Block 1	Block 2		Block 3		Block 4
Voltage
Detector			High Pass
and Gain			Filter
Control	Square		(DC			1st
			Removal)	Weighting	Squaring	Order
	Law					Sliding
				Filter	Multiplier
	Demodulator		Low			Mean
Input			Pass Filter			Filter
			(Carrier
Voltage			Removal

Adaptor

	Block 5
A/D
	Minimum
Converter		Output
Sampling	64 level
		Interface
Rate	Classifier
>50Hz

Programming of short and long observation periods

Output Recording	Output and Data Display
Instantaneous Flicker in
	Pst Max/Min Pst
Perceptibility Units
	Plt Max/Min Plt
(Pinst)

Figure 12.1: Simulation of Eye Brain Response

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 Doc # E107706 V1.25 12-3