Agilent Technologies 4339B - Page 95

4339B
Front
P
anel
V
Output
Indicator
The
V
output
indicator
indicates
that
the
test
voltage
is
applied to
the DUT
.
Source
Voltage
key
The
source voltage
key sets
the
test
voltage
value
from
0
to
1000
V
.
Resolution
of
the
test
voltage
is as
follows:
Voltage
Range
Resolution
0
V

T
est
V
oltage

200
V
0.1
V
200
V
<
T
est
V
oltage

1000
V
1
V
Current Limit
Key
The
current
limit
key
sets
the
limitation
value
of
current
owing
through
the
DUT
.
The
4339B
adjusts the
test
voltage
so
that
the
current
owing
through
the
DUT
does
not
exceed
the
current
limit
value
.
While
the current
limit is
active and
the
source
output
is
decreased,
the
4339B
displays
\
OVER
CURRENT
". The
current limitation
feature protects
the
DUT
from
destruction due
to high
current ow
.
Current
limits
can
be
set
to
the
following
values:
0.5 mA
(default)
1mA
2
mA
(at test
voltage
0
to
500
V
only)
5
mA
(at test
voltage
0
to
250
V
only)
10
mA
(at
test
voltage
0
to
100
V
only)
Note
When
the
16117B
Low
Noise
T
est
Leads
are
used,
the
available
current
limit
setting
is
0.5
mA
only
.
Measurement
Time
key
The
measurement
time
key
sets
measurement time
mode: Short,
Medium( Med
), or
Long.
A
longer
measurement
time
produces
a more
accurate measurement
result. The
current
measurement
time
mode
setting is
indicated by
the Meas
Time annunciator(
9 ).
The default
setting
is
Medium.
Average key
The average key sets the measurement averaging rate
. The 4339B automatically averages the
measurement results by this rate
. The averaging rate can be set as an integer
from 1 to 256.
The default setting is 1.
Function Reference 3-5