Agilent Technologies 4339B - Page 104

Front
P
anel
4339B
Open
K
ey
The
Open
key
is
execute
the
OPEN correction
measurement to
obtain the
OPEN correction
data.
The
4339B
uses
this
data
to cancel
the leakage
of the
test xture
and to
obtain the
limit
value
for
the
contact
check
function.
The correction
data is
stored in
non-volatile memory
(EEPROM).
See
\
P
erforming
OPEN
Correction
"
in
Chapter
1
for
more
information.
If
is
pressed,
the
following
OPEN
correction
menu
is
displayed.
OpenMeas
P
eroforms
the
OPEN
correction.
MeasV
al
Displays
the
OPEN
correction
data
(OPEN
measurement
value).
Exit
Exits
the
menu.
At
reset,
the
correction
data
is
cleared.
Calibration
K
ey
The
Calibration
key
executes
the
calibration
function. Calibration
cancels the
internal oset
error
and
the
proportional
error
of
the 4339B
due to
environmental temperature
changes.
The
calibration
data
are
stored
in
backup
memory.
Refer to
\Performing
Calibration"
in
Chapter
1
for
more
information.
At
reset
,
the
calibration
data
is
cleared.
Comparator
On/O
K
ey
The Comparator
On/O
key
toggles
the
comparator
ON
and
OFF
.
The
comparator
determines
the measurement
result (displayed
value)
is
within
the
upper
and
lower
limits
set
by
the
Comparator
Limit
key
.
When
the
comparator
is
ON,
the
Comprtr
On
annunciator(
9
)
will
be
displayed.
The
comparator
will
yield
one
of
the
following
results:
HIGH
Greater
than
upper
limit
IN
Between
the
upper
limit
and
lower
limit
LO
W
Less
than
lower
limit
N.C.
(no-contact)
Contact
check
failed
(at
contact
check ON
state)
In addition, these results are transmitted to the following destinations:
Destination Condition
Display
HIGH, IN, LOW
, N.C.
Handler Interface HIGH, IN, LOW
, N.C.
Beeper HIGH, LOW
, N.C. (when beeper mode is
fail), or
IN (when beeper mode is
pass)
3-14 Function Reference