Tektronix MSO56B Printable Help

Index I where H is maximum
I = Index of (Max(H))
B
s
= B(I) (2)
Remanence (B
r
):
Remanence is the Induced magnetic flux density that remains in the material after the externally applied magnetic field (H) is
returned to zero during the generation of the hysteresis loop. This represents max value of B for all values of zero value of H in
the B waveform.
Find the index at zero value of H on the H waveform and calculate the maximum value of B from these indices.
Let ‘q’ be the index at zero value of H on H waveform. Let the q1 and q2 be the indices of the waveform. Calculate the value of B
at the Indices q1 and q2 on the K
th
cycle. The maximum magnitude value of B is the remanence Flux density.
Coercive Force(H
c
)
Coercivity is the value of H found at the intersection of the H-axis with the hysteresis loop. This represents the external field
required to cause the induced flux density (B) to reach zero during the measurement cycle of a hysteresis loop. H
C
is
symmetrical with the positive and negative axis.
Coercivity H
c
is calculated on the cycle where the maximum flux density occurs in the entire acquired waveform.
Finding the index at zero B value on the B waveform: Let 'q' be the index at zero value of B on B waveform. Let q1 and q2 be the
indices on the B waveform where B is zero.
Coercivity is the maximum magnitude of the H data at the indices of q1 and q2 is the coercivity.
Permeability
The ratio of B and H calculated on the B
k
cycle. Select the points on the BH plot using the cursor and calculate the slope of the
BH curve using the data selected between the cursor. You can choose the portion of the plot using the cursor to obtain the
results.
In the BH curve plot there is a provision to select the points using the waveform cursors 1 and 2. This is used to calculate the
slope of BH Curve using the data between the cursors 1 and 2. The computed slope as explained below displays the scalar value
of the permeability (μ) in the results badge and table.
In slope calculation, there are N points between the cursors:
Find
H
av
= (H1+H2+…Hn)/N
B
av
= (B1+B2+…Bn)/N
H
normi
= Hi-Hav, i=1..N
B
normi
= Bi-Bav, i=1..N
B/H = SUM (H
normi
1*B
normi
1+H
normi
2*B
normi
2+…+H
normi
N*B
normi
N) / SUM(H
normi
1*H
normi
1+H
normi
2*H
normi
2+…H
normi
N*H
normi
N)
Where,
B/H is the Permeability (μ)
Measurement algorithms
474 MSO54, MSO56, MSO58, MSO58LP, MSO64 Help

Tektronix MSO56B Specifications

General

Brand	Tektronix
Model	MSO56B
Category	Test Equipment
Language	English