17
Configuration
Cp2 = 0.09901
µ
F
Cp3 = 0.05000
µ
F
Thus, when
Ｄ
< 0.01, Cs and Cp is basically the same, but >0.01, the difference will be obvious,
such as D=0.1 hours, a difference of 1% D=1 when the difference between a times.
4.1.3
Display Mode
【
DISP
】
Press
【
DISP
】
to choose the main parameters display way:
DIR
：
Show, main parameters will display the actual value of DUT
ABS:
∆
，
absolute deviation of DUT will be displayed in the first line
std
x
X
X
−
=
∆
Xx
：
measured value
Xstd
：
nominal value
PER
：
∆
%
，
relative deviation of DUT will be displayed in the first line
%
100
%
⋅
−
=
∆
std
std
x
X
X
X
4.1.4
Frequency Select
【
FREQ
】
Accuracy:
±
0.02%
AT811provides 4-bin s test frequency:
100Hz
，
120Hz
，
1kHz
，
10kHz
In general, the higher frequency, the smaller capacitor value and inductor can be measured.
4.1.5
Signal Level
【
LEVEL
】
Accuracy:
±
10%
AT811 provides 2-bins test level:
0.3V &1.0V
If DUT does not have requirements about the test level, please setting1.0V
4.1.6
Test Speed
【
RATE
】
AT811provides two speeds:
SLOW & FAST
4.1.7
Source Resistance
【
SRES
】
AT811 provides two kinds source resistance:
30
Ω
& 100
Ω
In general, 30
Ω
source resistance will be a better choice.
