JK2830 Operation Manual Chapter 5 Execute LCR operation and some examples
Table B calibrated interpolating factor K
C
Test frequency
K
c
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
[kHz]
There are 43 frequencies in table C, there is no 250kHz and 300kHz in JK2830.
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
（
℃
）
0-8
8-18
18-28
28-38
38-48
K
e
4
2
1
2
4
6.3.9
Accuracy of DCR
A(1+R
x
/
5MΩ+16mΩ/R
x
)[%] ±0.2mΩ
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.
6.4
Safety requirement
The instrument is the
Ⅰ
class safety instrument.
6.4.1
Insulation resistance
Under reference working condition
，
the insulation resistance between power
te
rminal and instrument jacket should not be smaller than50MΩ.
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