U2829 Series Operation Manual Chapter 6 Performance and Test
70
Direct calibrated frequency
0
Other frequency
0.0003
Table C Direct Calibrated frequency
20 25 30 40 50 60 80 [Hz]
100 120 150 200 250 300 400 500 600 800 [Hz]
1 1.2
1.5
2 2.5
3 4 5 6 8 [kHz]
10 12 15 20 25 30 40 50 60 80 [kHz]
100 120 150 200 250 300
[kHz]
There are 43 frequencies in table C, there is no 250kHz and 300kHz in U2829.
Table D Cable length factor K
d
Test signal level
Cable length
0m 1m
2m
≤
1.5V
rms
0
2.5×10
-4
（
1+50×f
m
）
5×10
-4
（
1+50×f
m
）
>1.5V
rms
0
2.5×10
-3
（
1+16×f
m
）
5×10
-3
（
1+50×f
m
）
f
m
: test frequency [MHz]
Table E Temperature factor K
e
Temperature
（
℃
）
5 8 18 28 38
K
e
6
4 2 1 2 4
6.3.9
Accuracy of DCR
A(1+R
x
/5M
Ω
+16m
Ω
/R
x
)[%] ±0.2m
Ω
When the instrument is in Middle and slow speed
，
A=0.25
In Fast speed, A=0.5
Where, R
x
is the tested resistance.
6.3.10
Accuracy of leakage inductance Lk
Inductance L’s ac0.2%
6.3.11
Accuracy of the rate of Turns to Ratio
±A
t
×A
r
（
1+1
Ω
/Zp+1/Q
）
[%]± 0.002
Fast: A
T
= 0.5
Middle and slow: A
T
= 0.25
Zp is the impedance of the tested primary inductance
A
r
is the test signal accuracy modification value in figure B
The accuracy index is used when the coupling coefficient is 1 or next to 1.
