Hioki IM7580, Инструкция по эксплуатации

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285
Measurement Accuracy
With the above, Zs is calculated as follows:
Zs = 20 + Zsr + 0.5
×
F
= 20 + 3 × 10
(-0.048 × (-10) -0.15)
+ 0.5 × 50
= 51.41
[m
Ω
]
3
Obtain Yo.
From measurement conditions and accuracy specification:
Yor = 3 × 10
(-0.046P + Yoff)
P = -10
(measurement signal level [dBm])
Yoff = -0.4
F = 50
(measurement frequency [MHz])
With the above, Yo is calculated as follows:
Yo = 30 + Yor + 0.15 × F
= 30 + 3
×
10
(-0.046 × (-10)-0.4)
+ 0.15
×
50
= 40.94
[µS]
4
Obtain Eb with Zs, Yo and measurement value Zx.
Eb
Zs
Zx
Yo Zx = + ⋅





×
100
= × + ×





×
51 41
1000
1
50
40 94
1000000
50 100
. .
= (0. 0.002025)
×
100
= 0.3075
5
With Ea and Eb, obtain accuracy of Z and
θ
.
Z accuracy
= ±(Ea + Eb)
[%]
= ±0.851
[%]
θ
accuracy
= ±0.58 × (Ea + Eb)
[°]
= ±0.493°
12
Specifications