4.2 Setting Basic Settings of Measurement Conditions
48
Testing some types of sample is not possible using constant current. In this case, the following
symbol appears on the display:
In such a case, constant current testing is not performed. Change the constant current level
to a value not more than the value being shown as Imoni.
Reference When a 1 mH impedance is measured at 1 kHz, the CC operation range can be
obtained as follows.
Sample impedance
Zm becomes as follows:
The impedance
Zm' observed from the generator is as follows:
Accordingly, the current
Im across both leads of the sample is as follows:
Because the generator output voltage range is 5[mV] to 5[V] for 1 kHz, the CC operation
range per the above expression is
Im = 8.47[A] to 42.3[mA].
In low Z high accuracy mode, the output resistance
Ro becomes 10[].
Xm 2
fL=
Zm
= Rm + jXm = 0 [
] - j62.8 [
]
Ro: output resistance (100 [])Zm' = Ro + Zm = 100 [
] - j62.8 [
]
Im
Vo
Zm
------------
Vo
118.1
------------------==
Vo : generator output
|Zm' |
Vo
118.1 [
]
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