I
A1
~.
I
D
l
NCE
REFERE
SIGNA
L
r-
r
K
ID
I
'i'
~rl
/
1V
REFERENCE
CURSOR
~t
;
.
TIME
DIFFERENCE
I-
-y-
91.80ps
COM
PARISON
IGNAL
I
S
I
~
-
20
IlS
DELTA
CURSOR
Applications
(3832-17) 5854-15
Figure 3-4. Time between
two
pulses (cursor method).
Slew Rate
Slew rate
is
the slope of a signal
in
volts/second.
1.
Display the slope of the signal over the largest practical span of horizontal
deflection and vertical deflection.
2.
Activate
1/tlt
and set the cursors to intersect the signal slope at paints that
are separated by one
volt or
by
a power-of-ten multiple or fraction of one
volt.
3.
Interpret the frequency
(Hz)
readout
as
volts/second instead of
cycles/second (Hz).
Multiply the result by the power-of-ten multiple of one
volt between the cursors. For example, if the cursors intersect the
waveform at paints separated by one
volt
and
the readout shows 173 kHz,
the
slew rate
is
173 V /ms. With 10
mV
between cursors and 55.3 MHz
readout, the
slew rate
is
0.553 V/IlS or 553 kV/s, etc.
2465A/2455A/2445A Operators 3-9
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