NF FRA51615, Instruction Manual

Page: 279 / 306

9.4 Analysis processing section
9
-
15
FRA 51615

Measurement accuracy for other than Z and θ
Accuracy of measurement items other than Z (impedance) and θ (phase). Where defined the accuracy of
Z as Za %, and the measurement value of θ as θx, specified in " 9.4.1 Common items , ● Measurement
accuracy (fixed range) and ● Measurement accuracy (AUTO range)".
Y ±Za %
R, Rs, Rp, G ±(Za / cos θx) %
X, B, Ls, Lp, Cs, Cp ±(Za / sin θx) %
D ±(0.01×Za)
When |Dx|
≦
0.1; Dx is the measured value of D.
The measurement accuracy of D is not a percent value, but the value itself.
Q
±
{(Qx
2
×
Pe / (1
－
|Qx|
×
Pe)}
When (|Qx|
≧
10) and (|Qx|
×
Pe
≦
0.1).
Qx is the measured value of Q. Pe = 0.01 × Za.
The measurement accuracy of Q is not a percent value, but the value itself.

Error correction function
Open correction Corrects the residual admittance
Short correction Corrects the residual impedance
Load correction Corrects the voltage-current conversion coefficient of the measurement
system
Load standard value Standard values can be entered for up to 10 frequency points.
Port extension Corrects the error due to phase delay in cables for 2-port measurements.
Characteristic impedance
Setting range 1.00 Ω to 999 Ω, resolution 3 digits
Electrical length
Setting range 0.000 m to 999.999 m, resolution 0.001 m
Slope compensation ON/OFF
This function performs analysis that is unaffected by the DC level for signals
that have a superimposed DC level that varies linearly over time. It is used
when measuring the impedance of batteries during charging and discharging.