User`s guide

Characteristics and Specifications 4
Electrical Specifications
U1731C/U1732C/U1733C User’s Guide 81
Phase angle of impedance specifications
Table 4 - 4 Phase angle of impedance specifications
Range Resolution Accuracy = θ
e
Condition
–180° to 180° 0.1°/1° D < 1 or Q > 1
Notes:
1 The A
Z
and Offset variables are the accuracy specified at Ta b le 4 - 1, “Impedance/Resistance/DCR specifications,” on
page 78.
2 The π variable is rounded up to 3.14159.
3 The table below shows an example of the calculations for the phase angle of impedance:
Impedance Z
X
A
Z
Offset θ
e
1999.9 Ω 19999 0.2% 3 ±0.12°
199.9 Ω 1999 0.2% 3 ±0.20°
19.9 Ω 199 0.2% 3 ±0.98°
1.9 Ω 19 0.2% 3 ±9.16°
A
Z
Offset
Z
x
--------------- -
+
⎝⎠
⎛⎞
180
π
-------- -
×