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Examples of Determining
Accuracy
Ex.
1: Find the accuracy when R=33k<2, f=lOkHz, IV, while Q<O.l.
Find the accuracy from Table A-l, using the following parameters:
IV, 1OkHz and 20k to 200kR.
When operating
within a temperature
range from 5 to 4O"C, add
the value in Table A-4.
When accuracy is needed for 21Mn or a2n, interpolate
the value
according to Note 3.
Add fl/2
count of display value. When the display shows a mea-
sured value of 33.14kR, the l/2 count becomes 0.005m.
Ex.
2: Find the accuracy when C = lOpF, f=lkHz, 50mV, while D < 0.1.
1. Find I Z I from Figure A-l Conversion Diagram.
l
Find the line descending
from C = 1OpF. Find the vertical line
from frequency = lkHz. Mark their intersection.
l
Extend a horizontal
line from the intersection,
to the left side.
Read the value of I Z
I
(=16@. Also, you can calculate the accu-
racy using the following equation.
IZI
= 11/27EfCI
Find the accuracy from Table A-l, using the following parameters:
50mV, 1kHz and 10 to 2m.
When operating
within a temperature
range from 5 to 40°C, add
the value in Table A-4.
When accuracy is needed for ZlMn
or <2!& interpolate
the value
according to Note 3.
Add *l/2 count of display value.
Ex.
3: Find the accuracy when L = 680pH, f=lOOkHz, while Q z 10.
1. Find I Z I from Figure A-l Conversion
Diagram.
l
Draw a straight line from L = 68OpH, in parallel with the ascend-
ing lines. Find the intersection
with the vertical line at frequency
= 1ookHz.
l
Read I Z I as shown in Ex. 2. Also, you can calculate the accuracy
using the following equation:
IZI = 12RfLI
2. Find the accuracy from Table A-l, using the following parameters:
f=lOOkHz and 10 to 2m. Repeat procedures 3 to 5 in Ex. 2.
Ex.
4: Find the accuracy of
IZI
at any 8 and for parameters
other
than
8.
1.
Measure
IZI
and 8, or calculate
the accuracy,
using the other
parameters.
Q =1/D
I8 I
= I arctanQ I
= 2xfLsJESR
izi
= l27adsineI
= 1/ (2rrfCs ESR)
= I
1 / (271fCs sin
81
= 2n;fCp I G
= I 1/ (2lcfCp sin
81
= 1/(27rfLp G)
= l27cfLp/sin 81
f: Frequency
(Hz)
Suffix s: Series equivalent
circuit
p: Parallel equivalent circuit
2. Find the accuracies of I Z I and 8. Refer to Ex. 1.
3. Find the maximums
and minimums
of
I
Z I and 8 from the mea-
sured values and accuracies of I Z I and 8.
Z max, min = Measured value I Z I x [l i Accuracy of I Z I (%) / 1001
8 max, min = Measured value 8 + Accuracy 8 (degree)
4. Find the maximums
and minimums
of the parameters
for the four
sets of combinations
of maximums
and minimums
of I Z I and 8,
using the calculating
equation
of each parameter.
B is a suscep-
tance, i.e., an imaginary component of admittance.
ESR = IZI cose
G
=(i/izi)c0se
X
= IZI
sine
B
=-(l/
lZI)sin8
Ls
=XIZnf
LP
=-l/27&%
cs
=-l/ZafX
CP
= B/&f
Q
= lsin~l /cosO
D
=c0se/
Isinel
5. The accuracy is the value that the error of l/2 count of display is
added to I maximum value-measured
value
I
or
I
minimum value-
measured value
I,
whichever is greater.
A.2
MEASURING
SIGNAL
Frequency
Range:
120, lk, lOk, 100k (Hz)
Accuracy:
1tO.O05% (*50ppm)
Signal level
(HCUR open voltage with terminal)
1Vrms:
*3X at 1kHz
*4% at 12OHz to 1OkHz
f5% at 1OOkHz
50mVrms:
&5t5x at lkHz
*6"/0 at 12OHz to 1OkHz
*7% at 1OOkHz
DC bias
Internal:
2V, *5%
External: 0 to ~t35V
A.3
MEASURING
RANGE
Number of ranges: 6
(Reference
resistance:
1004
lw2, lOka, 5Ok(l,
upper and lower extension ranges 2)
Selection:
Automatic
A.4
MEASURING
SPEED (reference value)
Measuring time (fixed range and auto trigger mode)
When the range is not switched,
the following
values become
effective:
15oms (typ) lkHz, lksz
600ms (max) all ranges, all frequencies
Automatic range switching time (per range)
The automatic range switching time is nearly equal to the measur-
ing time. When the frequency
is $lZOHz and the impedance
is
>lMB,
it will take time for the measured value to stabilize. When
measuring
a device whose impedance
changes
according
to the
magnitude of the measuring signal, time will extend until the value
of the device becomes stable.
Level switching stabilization time:
200ms to 4s
The level switching
stabilization
time will change according to the
kinds of devices under test. Time increases when measuring
non-
linear elements,
such as diodes, or when switching
from 1V to
50mV. This is the time required for the stabilization
of measured
values.
The time needed
to change
the device
under
test is
excluded.
Bias stabilization time: (4 + 0.015C)s
Where C=capadtance
of device under test (I.IF).
Frequency switching stabilization time:
150ms to 4s
The frequency
switching
stabilization
time increases when a high
frequency is changed to a low frequency (e.g.: 1OOkHz to 120H.z)
Also, time changes according to the device under test. This is
the
time required for the stabilization
of the measured value. The time
taken to change the device under test is excluded.
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