Risetime - HP 54501A Programming Reference Manual

RISetime
RISetime
command/query
The
:MEASURE:RISETIME
command places the instrument in the
continuous
measurement mode and starts
a
Risetime measurement.
The
RISETIME
query
measures and outputs the rise
time of the
first
displayed rising (positive-going)
edge.
For best measurement accuracy
set
the sweep speed
as
fast
as
possible while leaving the leading edge of
the
waveform
on the
display.
The
rise time
is determined by measuring
the time at the lower threshold
of the rising edge then
the time
at
the
upper threshold of the
rising edge and calculating the
rise
time with
the
formula:
rise
time
=
(time at upper threshold point
-
time
at lower threshold
point)
If
the horizontal scaling is questionable when this
measurement
is
made
an "error
11" is placed in the error queue.
:MEASure:RISetime
OUTPUT 707;":MEAS:RIS"
:MEASure:RISetime?
[:MEASure:RISetime]
<valuexNL>
Where:
<
value
> ::
=
rise time
in seconds (exponential
-
NR3 format)
Command
Syntax:
Example:
Query Syntax:
Returned Format:
Example: DIM Rs$[50]
OUTPUT
707;":MEAS:RIS?"
ENTER
707;
Rs$
PRINT Rs$
HP 54501A
Programming
Measure Subsystem
14-37