User Manual
80
7. Quality factor (Q) Accuracy:
Refer to - Measurement Accuracy Chart for Zae
when ,
when ,
Qx: Measured Q value
Dae: Relative Accuracy of D
Zae: Relative Accuracy of Z
8. Susceptance (B) Accuracy:
Refer to - Measurement Accuracy Chart for Zae
when ,
when ,
Qx: Measured Q value
Example:
Frequency: 1 kHz; Level: 1 VRMS; Measured Cx Value: 15 μF; Dx: 0.122
Step 1: Find Cae; Refer to - Measurement Accuracy Chart
Cae = Zae = ±0.5%
Step 2: Find Dae; Dx > 0.1
Zae × (1 + Dx
2
) = ×
= 0.005037 = ±0.5037%
Example:
Frequency: 500 Hz; Level: 0.5 VRMS; Measured Lx Value: 1013 mH; Qx: 10.18;
Dx: 0.098
Step 1: Find Lae; Refer to - Measurement Accuracy Chart
Ae multiply 1.1 at 0.5 VRMS; Zae × 1.1 = Lae = Dae = ±0.05% × 1.1 = ±0.055%
Step 2: Find Qx × Dae; 10.18 × 0.00055 = 0.00509; Qx × Dae < 1
Step 3: Find Qae;
= (+0.05731% , - 0.05667%)
+Qae = 10.18 + 0.05731*10.18= 10.1858
-Qae = 10.18 - 0.05667*10.18 = 10.1742
Valid range for Qae = (10.1742, 10.1858)