HP 83480A User Manual

Increasing Measurement Accuracy
and Time-Interval Measurement
Time-Interval Measurements
Dynamic response errors
Whenever the input voltage of an instrument changes with respect to time,
there is some transient error in the instrument's reproduction of the input
signal.
The probe also has some non-ideal transient response that contributes to
the overall system error.Additionally, the probe and the circuit under test
form a circuit that behaves dierently from the circuit without the probe; the
signal at the probe tip is not the same as the signal that is present when the
probe is
removed. Probe
loading
often
has
a
more
signicant
eect
on
the
measurement than
the transient
response of
the
instrument,
and
must
be
included in
the analysis
of time-interval
measurement
errors
.
See
\Probe
capacitive
loading",
later
in
this
chapter
,
for
more information.
At
the
very
high
bandwidth
of
the
instrument,
the transient
response of
50
coaxial
cables
can
be
signicant.
Y
ou
must
use
good
quality cables
and
keep
them
as
short
as
possible
for
best
accuracy
.
9-14

HP 83480A Specifications

General

Brand	HP
Model	83480A
Category	Measuring Instruments
Language	English