HP 83480A User Manual

The Instrument at a Glance
The Front Panel
Indicator lights
There are three indicator lights near the top-left corner of the instrument.
These lights give you a quick indication of the acquisition status of the
instrument.
Armed When the armed light is on, it indicates the trigger circuit is armed and
waiting for a valid trigger event to occur. A valid trigger event occurs when a
signal meets the triggering conditions specied in the trigger menu.
T
riggered When
the triggered
light is
on, it
indicates
the
instrument
accepted
a
trigger
event.
Every
time
the
instrument
accepts
a
trigger
event,
one data
point is
sampled.
When
enough
points
have
been
sampled
to
ll
the
record
length, a
trace
is
completed.
The
triggered
light
can
be
used
to
help
determine
the
trigger
thresholds
.
T
o
do
this
,
simply
move
the
trigger
level
in
either
direction.
When
the
triggered
light
turns
o,
you
know
that
is
one
of
the
trigger
thresholds
.
Move
the
trigger
level
in
the
other
direction
to
determine
the
other
threshold.
Y
ou
now
know
what
the
trigger
thresholds
are
and
you
can
set
the
trigger
level
as
required
by
your
application.
Typically
the
trigger
level
is set
halfway between
the
two
thresholds
.
Freerun
Freerun
automatically
provides
a
trigger
as
soon
as
the
trigger
is
armed.
It
is
used to view the input signal when no valid triggers are available.
HP 83480A Option 100 only: When in the 12 GHz mode, the triggered and
freerun lights are illuminated at all times to reect the operation of the 12
GHz trigger.
1-14

HP 83480A Specifications

General

Brand	HP
Model	83480A
Category	Measuring Instruments
Language	English