Hioki IM3570, Instruction Manual

Page: 403 / 458

13.2 Measurement Range and Accuracy
395
13
Chapte
r 1
3 S
pec
ifications
The measurement accuracy is calculated from a basic accuracy, which is based on the accuracy for
impedance Z (% rdg.) and phase angle

(
°
), and the following coefficients.
Basic accuracy
Measurement conditions of basic accuracy coefficient table
•
Using the Model 9262 Test Fixture
•
Measurement speed
: SLOW2
•
Cable length
: 0 m
• Operation 60 minutes after the power is turned on.
• Open circuit compensation and short circuit compensation both being performed.
• DC adjustment ON (when DC resistance measurement)
• Temperature and humidity: 23±5
°
C, 80%RH or less
When the measurement conditions differ from the above, multiply the level coefficient (C), measure-
ment speed coefficient (D), cable length coefficient (E), DC bias coefficient (F), and temperature coeffi-
cient (G) by the basic accuracy.
The basic accuracy is calculated by determining coefficient A and B from the basic accuracy coefficient
table in accordance with the measurement frequency*1 and measurement range, and then using the
following expression.
The basic accuracy becomes the accuracy [%] of Z and accuracy [
°
] of

.
*
1 When the measurement frequency is 1.001 MHz or more, (f [MHz] +3)/4 must be multiplied to the
basic accuracy.
13.2 Measurement Range and Accuracy
Measurement accuracy = Basic accuracy × C × D × E × F × G
C: Level coefficient/ D: Measurement speed coefficient/ E: Cable length coefficient/
F:DC bias coefficient/ G: Temperature coefficient
1 k

range or more
Basic accuracy = ±
Basic accuracy = ±
100

range or less
Zx: Impedance (effective value or value obtained by the following expression) of the test sample
Zx[

] =

L [H]
(when

= 90

)
= 1 /

C [F]
(when

= -90

)
= R[

]
(when

= 0

)
10
×
Zx[

]
Range [

]
- 1
A +
B
×
- 1
A +
B
×
Range[

]
Zx[

]