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Tektronix 47E5A

Tektronix 47E5A
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~~~~~~~~
-
~
I
HORIZONTAL
I
1..1
....
__
DISTANCE
--
.....
~I
Fig_
26_
Time
duration.
465/DM-O-9
Substitute
the
DELAY
TIME
POSITION
dial
settings
into
the
time
difference
formula
to
obtain
the
time
duration.
EXAMPLE:
The
A
TIME/DIV
switch
is set
to
2 ms and
the
B
TIME/DIV
switch
is set to .1 ms.
The
DELAY
TIME
POSITION
dial
setting
at
Point
A
(Fig. 26) is
1.20 .
The
DELAY
TIME
POSITION
dial
at
Point
B (Fig. 26) is 9.53.
To
find
the
time
duration
use
the
formula:
Time
Time
Difference
Duration
[
,ecood
f;,,,
J
delay
time
dial
dial
X
(A
TIME/DIV
setting
setting
setting)
Substituting
the
given
values:
Time
Duration
= (9.53 - 1.20) X 2
ms
= 16.66 ms
FREQUENCY
MEASUREMENTS
(BASIC
475A)
The
frequency
of
a
recurrent
signal
can be
calculated
by
taking
the
reciprocal
of
the
time
duration
of
one
event.
EXAMPLE
:
The
time
duration
of
one
event
(Point
A
to
Point
B, Fig. 26) is 16.66
milli
s
econds
.
Using
the
formula
:
Frequency
=
--~--:--
time
duration
Substituting
the given values:
1
Frequency
= 16.66 ms
60
hertz
50
475A/OM44 Operators
@
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