QuadTech 1730T - Operation; Accuracy Tables

Page 42 of 110 150821/A4 Operation
If the impedance (⏐Z⏐) is in the range 0.1Ω to 0.01Ω, then the following accuracy formula
applies.
Z < 0.1Ω:
Values for parameters A, B and C are listed in Table 2-4a
Table 2-4a: ⏐Z⏐ - θ Accuracy for Z: 0.1Ω - 0.01Ω
Frequency
Parameter
50Hz 60Hz 100Hz 120Hz 1kHz 10kHz 20kHz 40kHz 50kHz 100kHz
A 0.8 0.7 0.6 0.4 0.3 0.3 0.4 0.5 0.6 0.8
B 0.15 0.14 0.12 0.12 0.08 0.08 0.09 0.1 0.01 0.12
0M
0Ω 0Ω 0.001Ω 0.0012Ω 0.002Ω 0.02Ω 0.04Ω 0.08Ω 0.1Ω 0.2Ω
1M
0.004Ω 0.006Ω 0.008Ω 0.009Ω 0.012Ω 0.07Ω 0.14Ω 0.28Ω 0.35Ω 0.7Ω
C
2M
0.008Ω 0.010Ω 0.015Ω 0.017Ω 0.022Ω 0.12Ω 0.24Ω 0.48Ω 0.6Ω
-
C = Cable Length
Multiply the ⏐Z⏐ and θ accuracy by the parameter D when the test signal level is not set to 1V.
The values for D are listed in Table 2-4b. The test signal voltage is abbreviated V
SIGNAL
and Vs
in Table 2-4b.
Table 2-4b: D Value when V
SIGNAL
is < 1V
Level
Parameter
1V > Vs ≤ 0.5V 0.5V > Vs ≤ 0.25V 0.25V > Vs ≤ 0.01V
D 1 2 0.5V
Vs
IZI Accuracy
IZI
C
=+
IZI
100m
Ω
B x
θ Accuracy = x
π
180
o
Ze
Ze (%) A=+
θ e=