Agilent Technologies 4349B User Manual

4349B
Contact
Check
K
ey
The
Contact
Check
key
toggles
the
contact check
function ON
and OFF
. The
Contact Check
function
detects
a
broken
cable
or
miss contact.
The decision
limit value
for a
contact is
obtained
during
the
OPEN
correction
procedure
. When
an OPEN
admittance is
measured,
non-connection
capacitance
is
measured
and
stored.
The 4349B
compares this
value and
DUT's
capacitance
.
The
Cont
Chk
annunciator(
9
)
indicates
if
the Contact
Check function
is in
the ON
state
.
The
default
Contact
Check
function is
OFF.
Open
K
ey
The
Open
key
executes
the
OPEN
correction
function.
The
OPEN
correction
data
is
used
to
cancel
the
oset
error
of
the
4349B
and
the
leakage
of
the
test
xture
.
The
OPEN
correction
measures
also
the
stray
capacitance
for
the
contact
check
function.
The
OPEN
correction
data
is
stored
in
non-volatile
memory
(EEPROM).
The
oset
error
of
4349B
is
temperature
dependent.
F
or
maximum
measurement
accuracy
,
P
erform
the
OPEN
correction
after
worming
up
the
4349B
(30
minutes).
P
erform
the
OPEN
correction
when
ambient
temperature
changes
more
6
5

C
from
the
temperature
at
which
the
OPEN
correction
was
performed.
At
reset
,
the
correction
data
is
cleared.
Note
OPEN
correction
must
be
performed
at the
condition
that
test
lead
or
xture
are
connected
to
Ch1,
Ch2,
Ch3, and
Ch4
terminals
,
without
DUT
.
K
ey
Lock
K
ey
The
Key
Lock
key
toggles
the
disabling
and
enabling
key
input
from
the
front
panel.
When the
key
input
is
disabled,
the
K
ey
Lock
annunciator(
9
)
will
be
displayed.
Note
The key
lock state
can
be
controlled
also
through
the
handler
interface
.
When
the
handler
key
lock
function
controls
the
key
lock
states
,
all
the
front-panel
keys
are
locked
out
including
,
so
you
can
only
cancel
the
key
lock
out
state
from
handler
.
Function Reference 3-9

Agilent Technologies 4349B Specifications

General

Brand	Agilent Technologies
Model	4349B
Category	Measuring Instruments
Language	English