JK2830 Series Operation Manual Chapter 3 Introduction to [DISP]
25
When testing inductance, it is necessary to input the same output impedance so
as to make data comparison with other instruments.
Operation steps for setting output impedance
Execute the following operations to set output impedance
1)
Move the cursor to the
RSOU
zone, the following soft keys will be displayed.
◼
100 Ω
◼
50 Ω
◼
30 Ω
2)
Press
100Ω
to select
the output impedance as 100Ω. Press
30Ω
to select the
output impedance as 30Ω.
3.4.6
Deviation test function
The deviation test function can make the deviation value (instead of real test
value) be directly displayed on the screen. The deviation value is equivalent to the
real test value subtracting the pre-set reference value. This function brings great
convenience to observe variations of component parameters with temperature,
frequency, bias. Bias test function can be used for primary or secondary
parameter or primary and secondary parameters meanwhile. The instrument
provides two deviation test modes as below:
◼
ΔABS (Absolute Devia
tion mode)
The deviation currently displayed is the difference between the test value of
the DUT and the preset reference value. The formula of calculating ΔABS is as
below:
ΔABS=X
-Y
Where, X is the test value of DUT
Y is the preset reference value.
◼
Δ% (Percentage deviation mode)
The deviation currently displayed is the percentage of the difference between
the test value of DUT and the preset reference value divided by the reference
value. Its calculating formula is as below:
Δ%=(X
-Y)/Y*100[%]
Where, X is the test value of DUT.
Y is the preset reference value.
Operation steps for setting deviation test function
1)
Move the cursor to the
REF A
zone to input the reference value of the primary
parameter, the following soft key will be displayed.
◼
MEAS
When the reference component is connected with the test terminal, you
should press
MEAS
. Then JK2830 will test the reference component and the
test result will be automatically input as the value of
REF A
.
2)
Use
MEAS
or numeric keys to input the reference value of primary parameter.
3)
Move the cursor to the
REF B
to input the reference value of the secondary
parameter, the following soft key will be displayed.
