Agilent Technologies 4339B - Page 80

Making
a
Measurement
4339B
Setting
Contact
Check
The
Cont Chk
annunciator( 9
) indicates
the
current
contact
check
status
.
Note
Before
performing the
contact check,
perform an
OPEN correction
to measure
the
reference
values
for
the
contact
check.
Refer
to \
P
erforming
OPEN
Correction
"
in
Chapter
1.
T
o
enable
or
disable
the
contact
check
function:
1.
Press
.
2.
Select
ON/OFF
using
or and
press
to
select.
3.
Select
On
or
Off
using
or ,
and
press
to
exit
to
the
previous
display
.
4.
Select
Exit
using
or ,
and
press
to
exit.
5.
The
Cont Chk
annunciator(
9
)
turns
ON
if
the
contact
check
function
is
enabled.
In
the
case
of the
contact
check
function
is
enabled,
N.C.
(No-Contact)
will
be
displayed
when
the
contacts
between
dut and
xture are
open.
The
capacitance
of
the dut
should be
shown
below
to
operate
the
contact
check
function
properly
.
C
dut
>
C
s
3
0
:
05
+
a
Where:
Cdut
Capacitance
of
dut
Cs
Stracy capacitance
at open
measurement (V
alue returned
from the
GPIB
command
:SENS:CORR:DATA?
SCAP
)
a Value shown in T
able 2-1
Table 2-1. V
alue a
Measurement
Range
Measurement Time Mode
Short Medium Long
100 pA | 0.5 pF
0.5 pF
1nA 0.5 pF
0.5 pF
0.5 pF
10 nA 0.5 pF 0.5 pF 0.7 pF
100 nA 0.7 pF 0.7 pF 1pF
1  A 1pF 1pF 1pF
10  A 1pF 1pF 1pF
100  A 1pF | |
2-12 Operating the 4339B