Atec Agilent-4286A - Manual (Page 8)

8
Measurement Accuracy
Conditions of 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.
• When the analyzer frequency is identical to the transmitted interference signal frequency, refer to
"EMC" in "General Characteristics".
Contact Check Measurement Accuracy
@ measurement range : 0.1 Ω to 100 Ω , resolution : 1 m Ω ± {3 + (25m Ω /R
dut
+ R
dut
/10k Ω ) ЧЧЧЧЧ 100} [%]
|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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.65 + [%]
100 MHz<Frequency ≤ 500 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.8 + [%]
500 MHz<Frequency ≤ 1000 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 + [%]
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
)
√
(1 + Q
N
)
√
(E
=
+ E
>
)
100
(E
=
+ E
>
)
100
(E
=
+ E
>
)
100
10
(E
=
+ E
>
)
(E
=
+ E
>
)
100
0.03
8
OSC
0.03
8
OSC
0.03
8
OSC
(1 + D
N
2 )tan( )
1 µ D
N
tan( )
E
=
+ E
>
100
E
=
+ E
>
100
(1 + Q
N
2 )tan( )
1 µ Q
N
tan( )
E
=
+ E
>
100
E
=
+ E
>
100