HP 83480A User Manual

General Purpose Oscilloscope Menus
Trigger Menu
Trigger basics
A trigger event is dened as an edge of a selected slope (either positive or
negative) that transitions through a selected voltage (trigger level).
The trigger circuit and sampler circuit operate in parallel. The sampler
samples the input signal at a specic rate. The trigger circuit operates
independently of the sampler circuit, and a trigger event does not have to
occur at the same time as a sample point. Because the instrument knows
when the trigger event happened in relation to the sampled data, the
instrument knows
where to
place
the
sampled
data
on
the
display
.
There are
three green
LEDs at
the
top
left
corner
of
the
mainframe
.
When
a
LED
is
lit,
it
indicates
the
trigger status
of the
instrument.
Armed
The
instrument
is
waiting
for
a
trigger
event to
occur.
Triggered
The
instrument
triggered
on
a
valid
trigger
event.
Freerun
The
instrument
is
automatically
triggered
as
soon
as
it
is
armed.
This
is
useful
for
seeing
a
waveform
untriggered
or
for
looking
at
a
baseline
.
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
.
Refer
to the
user's guide
for the
plug-in
you
are
using
for
details
on
the
trigger specications.
a
a
a
a
a
a
a
aa
a
a
a
a
a
a
a
a
a
a
a
aa
a
a
a
a
Sweep
The Sweep function lets you select between the
Triggered and Free Run
modes.
Key Path
4
Trigger
5
N
NNNNNNNNNNNNNNNN
Sweep
10-60

HP 83480A Specifications

General

Brand	HP
Model	83480A
Category	Measuring Instruments
Language	English