BK Precision 894 User Manual

89
Kb Compensation
Determine the K
b
compensation and multiply it by the K
b
value obtained from the table above,
the result will be the new K
b
and it is this value what should be used in the accuracy calculation:
Cable length L [m]
0
1
2
Fm ≤ 100 kHz
1
1+5×fm
1+10×fm
100 kHz < fm ≤ 300 kHz
1
1+2×fm
1+4×fm
300 kHz < fm ≤ 1 MHz
1
1+0.5×fm
1+1×fm
Table 15 - Cable Length Extended - K
b
Compensation (Impendace Z
m
>500 ohms)
Where, f
m
is the test frequency and the unit is [MHz].
Calibrated Interpolating Factor: K
c
If the frequency used is any of the frequency stated in , Kc will be a “direct calibrated frequency”
and if it is any other frequency (not listed on the table), Kc will be considered “other frequency”
and the value of each type of frequency should be obtained from the table below ():
Test frequency
K
c
Direct calibrated frequency
0
Other frequency
0.0003
Table 16 - Calibrated Interpolating Factor Kc
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
400
500
600
800
[kHz]
1
[MHz]
Table 17 - Direct Calibrated Frequencies
Cable Length Factor: Kd
0.15%×(f
m
/ 1MHz)
2
× L
2
f
m
: test frequency [MHz]
L: test cable length [m], respectively 0m, 1m, 2m
When using scan, take the correction factor K
d
as if the cable length is 2m.
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BK Precision 894 Specifications

General

Brand	BK Precision
Model	894
Category	Measuring Instruments
Language	English