4339B
Starting
Measurement
Sequence
Press
.
The
Seq
Running
annunciator(
9
)
turns
ON.
W
arning
Pressing may
cause
the
4339B
to
output
dangerous
voltage
,
up
to
1000
Vdc.
Do
not
touch
the
UNKNO
WN
terminals
or
the
electrodes
of
the
accessory
,
when
the
V
output
indicator
is
ON.
Aborting
Measurement
Sequence
Press
.
The
Seq
Running
annunciator(
9
)
turns OFF
.
To
Apply
T
est
V
oltage
Press .
The
V
Output
indicator
turns
ON.
W
arning
Pressing may
output
dangerous
voltage
,
up
to
1000
Vdc.
Do
not
touch
the
UNKNO
WN
terminals
or
the
electrodes
of
the
accessory
when
the
V
Output
indicator
is
ON.
T
o
Trigger
a
Measurement
In
internal
trigger
mode|The
4339B
makes
continuous
free-running
measurements
.
In
manual
trigger
mode|Press
when
you
want
to
trigger
a
measurement.
In external
trigger mode|
Connect
the
external
trigger
source
to
the
EXT
TRIGGER
terminal
on the
4339B's
rear
panel,
and
apply
a
TTL
level
trigger
signal
to
trigger
a
measurement.
(For
details,
see the
4339B
Operation
Manual
.)
Note
that
the
4339B
must
be
set to
the
external
trigger
mode
to
be
triggered
from
an
external handler or from the 16064B LED
Display/Trigger Box.
To Turn OFF V
oltage Output
Press
and conīrm the
V Output
indicator and the
High V
oltage
indicator is
turn OFF
.
Warning
If the High V
oltage Indicator turns ON after turning OFF the test voltage
,
the DUT is still charged. This happens especially for capacitive DUTs.Do
NOT
handle the DUT while the High Voltage Indicator is turned ON. When
the charge on the DUT discharges to a safe level(less than 42 V) the High
Voltage indicator will turn OFF.
2-16 Operating the 4339B