Autoscale; Setting Up The Instrument - HP 54501A Programming Reference Manual

Autoscale
Setting Up
the Instrument
The
AUTOSCALE
feature of Hewlett-Packard digitizing oscilloscopes
performs
a
very useful function on unknown waveforms
by
setting up
the
vertical channel, timebase, and
trigger
level of the
instrument.
The
syntax
for Autoscale
is:
:AUTOSCALE
<
terminator
>
A typical oscilloscope
setup
would
set
the vertical range and offset
voltage, the horizontal range, delay time, delay reference, trigger mode,
trigger
level, and slope.
A typical example
of the commands
sent
to the
oscilloscope are:
:CHANNEL1:RANGE
0.64;OPPSET
0.25
<
terminator
>
:TIMEBASE:RANGE 1E-6;DELAY 20E-9;MODE TRIGGERED
< terminator >
:TRIGGER:LEVEL
0.25;SLOPE
POSITIVE
< terminator >
This example
sets
the vertical to 0.64 volts full-scale
(80 mV/div)
centered
at 0.25
V.
The
horizontal time
is 1
ms
full-scale with 20
ns
delay.
The
timebase mode
is
set
to triggered, and the trigger circuit is
programmed
to
trigger
at 0.25 volts on
a
positive
slope.
Introduction to Programming an Oscilloscope
1-12
HP 54501A
Programming