4263B
LINE
Switch
The
LINE
Switch
turns
the
4263B
ON
or
OFF
.
In the
1(ON) position,
power is
applied and
all
operating
voltages
are
applied
to
the
instrument. In
the 0(OFF)
position, no
power is
applied
and
no
operating
voltages
are
applied
to the
instrument.
The
4263B
's
settings
are
held
in backup
memory for
about 72
hours after
power is
turned OFF
.
The
following
settings
are
backed
up:
T
est
signal
frequency
T
est
signal
level
DC
bias
source
selection
(internal
or
external)
DC
bias
voltage
setup
Measurement
parameters
Deviation
measurement
mode
Measurement
range
mode
-
Auto
or Hold
Measurement
range
Measurement
time
A
veraging
rate
Cable
length
Trigger
mode
Trigger
delay
Contact
check
function
ON/OFF
state
Comparator
function
ON/OFF
state
Comparator
limit
value
Level
monitor
setting
Display
mode
Display
digits
setting
Note
The
DC
bias
ON/OFF
state
is
not
saved.
At
power
on,
the
4263B
sets
the
DC
bias
output
to
OFF
.
Note
The
4263B
has
non-volatile
memory
(EEPROM)
in
addition
to
the
backup
memory
.
The
data
saved
to
EEPROM
such
as
OPEN/SHORT/LOAD
correction
data
and
the
beeper
mode
is
not
lost
when
the
power
is turned
o.
Chassis T
erminal
The Chassis terminal is tied to the
instrument's chassis and can be used for measurements that
require guarding.
UNKNOWN T
erminals
These are the terminals used to connect a four-terminal-pair test xture or test leads for
measuring DUT
s. The connector type is BNC.
Caution
Do
not
apply DC voltage or current to the UNKNOWN terminals. Doing so will
damage the 4263B . Before you measure a capacitor, be sure the capacitor is
fully discharged.
Function Reference and Technical Information 3-3
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