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(1)
(2)
(3)
(4)
(5)
(6)
D)
REAR
PANEL
CONTROLS
AC
POWER
INPUT.
A
three-pronged
recessed
male
connector
is
provided
on
the
back
panel
for
AC
power
connection
to
the
instrument.
Also
contained
in
this
assembly
is
a
1/2A
slow
blow
fuse
and
a
removable
card
that
can
be
removed
and
repositioned
to
switch
between
120V
AC
in
and
240V
AC
in.
2.0A
SB.
This
fuse
protects
the
output
stage
if
the
output
duty
cycle
rating
is
exceeded.
AMP.
To
voltage
control
the
output
amplitude,
set
the
switch
in
the
EXT
position
and
apply
0 to
+10
Volts
between
terminal
A
and
ground
(RIN
>
10K).
The
front
panel
controls
are
still
active
in
this
mode.
PW.
The
pulse
generator
may
be
triggered
externally
in
a PWOUT
=
PWIN
mode
by
setting
the
switch
in
the
EXT
position
and
applying
a TTL
level
pulse
of
the
desired
pulse
width
to
the
A connector.
HV_SWITCH.
This
switch
must
be
in
the
"ON"
position
to
obtain
an
output
pulse.
Note
when
the
unit
is
operating
at
a
low
duty
cycle
and
an
attempt
is
made
to
reduce
the
output
amplitude,
the
amplitude
will
decay
slowly
with
a time
constant
of
several
tens
of
seconds.
If
a rapid
decay
is
required,
briefly
switch
the
rear
panel
HV
switch
to
the
"OFF"
position
(and
then
back
to
the
"ON"
position).
Also
note
that
if
the
output
pulse
vanishes
due
to
a
changing
of
the
position
of
the
polarity
(see
paragraph
12,
Front
Panel
Controls),
the
pulse
recovery
time
may
be
reduced
significantly
by
briefly
setting
the
HV
switch
in
the
"OFF"
position
(and
then
returning
it
to
the
"ON"
position).
MONITOR
OUT.
This
BNC
connector
provides
an
output
voltage
pulse
V,
(to
50
Ohms)
which
is
a coincident
replica
of
the
oaa
current
pulse
I,,,,
from
the
front
panel
OUT
BNC
connector
as
follows:
Lion)
=
0-5
V,
(Amps,
Volts)
For
example,
if V,
is
determined
to
be
1.5
Volts
(using
an
oscilloscope),
the
load
current
is
0.75
Amperes.
Note
that
the
monitor
output
voltage
waveform
includes
the
overshoot
spikes
shown
below.
These
spurious
spikes
do
not
appear
on
the
actual
load
current
waveforn.
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