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The menu DIRP
A touch on the button
DIRP
opens the screen for the automatic resonance analysis “DIRP“.
“DIRP” stands for:
D
ual
I
ntegration
R
esonance
P
rocedure
“DIRP” registers resonances to frequencies applied in steps of “DELTA F” w ithin the limits betw een a low er
value “Fmin” an d an upper value “Fmax”.
SINE signals w ill be assigned automatically for the analysis. IMPORTANT: THE A MPLITUDE SETTING MUST
BE ASSIGNED WITH THE AMPLITUDE SLIDER. IT IS RECOMMENDED TO SET THIS VALUE TO 100% TO
ACHIEV E RESULTS THAT CAN BE COMPA RED. ONLY IN CASES OF HIGH SENSIBILITY, USE LOWER
VALUES FOR THE AMPLITUDE.
OSCA HAS NO EFFECT ON DIRP.
The red, black and blue marking on the right side of the screen indicates the output that has to be used w ith
the finger sensor FTB303.
The analysis is based on tw o readings:
1. MV =
M
easured
V
alue of a resonance
2. CV =
C
onductivity
V
alue
The Conductivity Value is a personal constant of the individual analyzed. It should read betw een 5% and 25%
as a base f or useful results of the analysis. The Measured Values are show n as a green vertical bars or lines
in the graph.
After completing a “DIRP” run, the algorithm calculates the level of a horizontal line (violet) in the graph, called
the
C
lipping
L
evel = CL. It separates the 10 highest resonance peaks (HITS) of the graph from the rest. If
required, the CL line can be moved up or dow n manually.
Fmin
touch to set “Fmin“ (Range 50 Hz to 2 MHz)
Fmax
touch to set “Fmax“ (Range 50 Hz to 2 MHz)
Delta F
touch to set “DELTA F“ (range 1Hz to 10000 Hz)
