Agilent Technologies 4339B - Page 81

4339B
Making
a
Measurement
Contact
check compares
a measured
capacitance
data
of
dut
with
a
limit
data.
Interpretation
of
the limit
data
and
the
measured
capacitance
data
of
the
dut
are
shown
below.
Reading
the Limit
Data
of
Contact
Check
Function
1.
Press
.
2.
Select
more
using
or ,
then
press
.
3.
Select
LimitC
using
or ,
then
press
.
4.
The
limit
value
is
displayed.
The
limit
data
(
Limit
)
is
calculated by
the following
equation.
Limit
=
C
s
3
1
:
035
+
b
+ O
ff
set
Where:
Cs Stray
capacitance
at
open
measurement
(V
alue
returned
from
the
GPIB
command :SENS:CORR:DATA?
SCAP
)
b
Value
shown
in
T
able
2-2
Oset
Data
entered by
OfsEnt
OfsEnt
is
set
to
`0''(default)
in
normal
measurement.
In
case
of
a
parallel
capacitor
measurement,
OfsEnt
will
be
set
to
the
capacitance
of
the
parallel
capacitor
.
T
able
2-2.
V
alue
b
Measurement
Range
Measurement
Time
Mode
Short Medium
Long
100 pA | 0.4
pF 0.4
pF
1nA 0.4 pF
0.4 pF
0.4 pF
10
nA
0.4
pF
0.4
pF
0.5
pF
100 nA 0.5 pF 0.5 pF
0.7 pF
1  A
0.7 pF
0.7 pF
0.7 pF
10  A 0.7 pF 0.7 pF
0.7 pF
100  A
0.7 pF
| |
Reading the Capacitance
Data at DUT Measurement
1. Press
.
2. Select more using or , then press .
Operating the 4339B 2-13