Atec Agilent-4286A - Manual (Page 12)

12
Typical Measurement Accuracy
Conditions of typical accuracy specifications
• Open/Short/50 Ω calibration must be done. Calibration ON.
• Averaging (on point) factor is larger than 32 at which calibration is done if Cal points is set to USER
DEF.
• Measurement points are same as the calibration points.
• Environment temperature is within ± 5 ° C of temperature at which calibration is done, and within 13 ° C to
33 ° C. Beyond this environmental temperature condition, accuracy is twice as bad as specified.
• 7 mm connector is used.
|Z|, |Y| Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±(E
a
+ E
b
) [%]
θ Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± [rad]
L, C, X, B Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±(E
a
+ E
b
) × [%]
R, G Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±(E
a
+ E
b
) × [%]
D Accuracy ( ∆∆∆∆∆ D)
@ |D
N
tan | < 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±
Especially, @ D
x
≤ 0.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±
Q Accuracy ( ∆∆∆∆∆ Q)
@ |Q
N
tan | < 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±
Especially, @ ≥ Q
x
≥ 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±Q
N
2
Where,
E
a
: depends on measurement frequency as follows:
1 MHz ≤ Frequency ≤ 100 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.56 + 0.03 [%](Typical)
100 MHz ≤ 500 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.63 + 0.03 [%](Typical)
500 MHz ≤ 1000 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.70 + 0.03 [%](Typical)
E
b
: (Z
s
/|Z
x
| + Y
0
|Z
x
|) ЧЧЧЧЧ 100 [%]
V
osc
: OSC level [V]
Z
x
: impedance measurement value [ Ω ]
Z
s
and Y
o
depend on number of point averaging (N
av
) and OSC level (V
osc
) as follows:
(E
=
+ E
>
)
100
(1 + D
N
)
√
(E
=
+ E
>
)
100
(E
=
+ E
>
)
100
(E
=
+ E
>
)
100
E
=
+ E
>
100
(1 + Q
N
2 )tan( )
E
=
+ E
>
100
1 µ Q
N
tan( )
10
(E
=
+ E
>
)
(E
=
+ E
>
)
100
0.03
8
OSC
0.03
8
OSC
0.03
8 OSC
Measurement Conditions Z
s
[m Ω Ω Ω Ω Ω ] Y
o
[ µµµµµ S]
Number of Point OSC Signal Level (Typical) (Typical)
Averaging (N
av
) (V
osc
)
0.2 V ≤ V
osc
≤ 1 V 20 + 0.05 × f
[MHz]
7 + 0.1 × f
[MHz]
0.01 V ≤ V
osc
< 0.2 V Ч (20 + 0.05 Ч f
[MHz]
) Ч (7 + 0.1 Ч f
[MHz]
)
0.2 V ≤ V
osc
≤ 1 V 7 + 0.05 × f
[MHz]
5 + 0.1 × f
[MHz]
0.01 V ≤ V
osc
< 0.2 V Ч (7 + 0.05 Ч f
[MHz]
) Ч (5 + 0.1 Ч f
[MHz]
)
1 ≤ N
av
≤ 7
N
av
≥ 8
0.2
8 OSC
0.2
8
OSC
0.2
8
OSC
0.2
8 OSC
(1 + D
N
2 )tan( )
1 µ D
N
tan( )
E
=
+ E
>
100
E
=
+ E
>
100
(1 + Q
N
)
√