Metrologic MS2020 Stratos, Service Manual

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©2004 Metrologic Instruments, Inc. All rights reserved MS2020 Stratos Service Manual
THEORY & OPERATION
SIGNAL PROCESSOR BLOCK DIAGRAM
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.00603 0.00605 0.00607 0.00609 0.00611 0.00613 0.00615 0.00617
Time
V
ol
ta
ge
Time
0s 20us 40us 60us 80us
V(first_derivative)
0V
1.0V
2.0V
3.0V
4.0V
1
st
Derivative Signal
2nd Derivative Signal