Measurement Results; Others - Iwatsu SY-8218 Instruction Manual

■

7.2 Measurement results

● If the result of measurement on this product shows the phenomenon shown in Table 7-2, it may be improved when remedies described in the
Table 7-2 are made.
Phenomena
Right/ left or top/ bottom of B-H curve
are reversed.
B-H curve is not symmetry.
Under nearly saturated measurement
condition of B-H curve, core loss
values disperse.
If the number of turns changes, a core
loss value changes greatly.
The value of the core loss varies by
the measurement day though it is the
same sample.
■

7.3 Others

● If the operation on this product shows the phenomenon shown in Table 7-3, it may be improved when remedies described in the
Table 7-3 are made.
Phenomena
If this product is started by pressing
POWER switch, it stops on the way of
BIOS screen; i.e. it cannot start.
Operation cannot be done on the
operation panel.
Table 7-2 Measurement results
Causes
 Wrong wiring of start. / end of the primary/
secondary turns to the measurement POD.
 DC offset is superimposed on the output of the
power amplifier.
 OSC cable SY-911 for IE-1125 is not connected
though the power amplifier used is IE-1125x.
 Measurement is made with Fixed Parameter
specifying Bm.
(If B-H curve is nearly saturated, reduce
Tolerance and specify Bm for Fixed Parameter.
In such a way, small amount of difference of Bm
measurement values causes core loss values
to disperse greatly.)
 The inductance of a sample resonates with the
input capacitance of this product.
 The magnetic characteristic of the sample
changes at the temperature.
 The stability of the magnetic characteristic of the
sample is bad.
 The contact of Chamber Scanner System has
been worn out.
Table 7-3 Others
Causes
 USB equipment is connected to USB port.
 This product hangs up for some reason.
 Make correct wiring;

Start of winding to + side, end to - side.
 Adjustment is made so that offset of the power
amplifier is set to 0.
 Reduce the gain of the power amplifier.
 Connect the provided AC couple module to the
output of the power amplifier.

It cannot be used for measurement less than
10[kHz]. When the frequency less than this is
necessary, it is possible to measure by using
LF AC COUPLER SY-514.
 Connect OSC cable SY-911 for IE-1125.
 Change the measurement mode to specify Hm
for Fixed Parameter.
 Reduce the inductance of the sample. Or reduce
the measurement frequency. (See
of a sample.)
 Always measure at the same temperature.

It is possible to measure with Chamber
Scanner System SY-320x/321x.
 A change with the lapse of time of the magnetic
characteristic is measured, and confirmed.

It is possible to measure with Continuous
Measurement Function SY-811.
 Observe the wear-out condition of contact
SY-512, and exchange it if necessary.
 This product can not normally start if USB
equipment is inserted in the USB port. Remove
the USB equipment from the USB port and
restart this product.
 Power off the main power switch on the rear of
this product, wait for 15[sec] or more, restart this
product.
54
B-H ANALYZER SY-8218 / SY-8219
Remedies
■
Remedies
4.4 Winding