Agilent Technologies 4349B, Руководство пользователя

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4349B
W ait Time
Figure 6-8. W ait Time
When the test voltage is dierent from the precharge voltage , a wait time is required
regardless of performance of the high resistance meter . The wait time t
w
is calculated as
follows:
t
w
= 0C
x
2 (R
s
+ R
i
) 2 l n(
X
100
2
R
s
+ R
i
R
x
2
1
K
)
where , R
s
: source resistance [],
R
i
: input resistance [],
X : measurement error [%],
K : (T est voltage 0 Charge voltage) / T est voltage
F or example , when Rs is 1 k (=10
3
), Cx : 1 F (=10
-6
F), Rx : 1 G (=10
9
), X is 10%,
and K is 0.1, the wait time is ,
t
w
= 010
06
2 (10
3
+ 10
3
) 2 l n(
10
100
2
10
3
+ 10
3
10
9
2
1
0: 1
)
= 26: 2[ms ]
Application Measurement 6-13