Tektronix 464 User Manual

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Other unknown signals may be measured without
disturbing the setting of the VAR TIME/DIV control by
establishing a horizontal conversion factor and an ar-
bitrary deflection factor. The time duration of the
reference signal
must be known before a horizontal
conversion factor can ba established.
Determine the horizontal conversion factor using the
formula:
Horizontal
Conversion
Factor
reference
(seconds)
Horizontal
deflection X
(divisions)
TIME/DIV
switch
setting
Determine the arbitrary deflection factor using this
formula:
Arbitrary
Deflection
Factor
horizontal TIME/DIV
conversion X switch
factor setting
To measure the time duration of an unknown signal, set
the TIME/DIV switch to a setting that provides sufficient
horizontal deflection to make an accurate measurement.
Do not readjust the VAR TIME/DIV control. Measure the
horizontal deflection in
divisions and calculate the time
duration using the formula:
Time
Duration
Time
arbitrary
deflection
factor
or
horizontal
horizontal
X deflection
(divisions)
= conversion X
Duration
factor
TIME/DIV
switch
setting
horizontal
X deflection
(divisions)
EXAMPLE: The reference signal
frequency measured is
455 hertz (time duration: 2.19 milliseconds) with a
TIME/DIV switch setting of .2 ms, and the VAR TIME/DIV
control adjusted to provide a horizontal deflection of eight
divisions. Substituting these values in the horizontal
conversion factor formula:
Horizontal
Conversion
Factor
2.19 ms
8 X 0.2 ms
1.37
Then with a TIME/DIV switch setting of 50 µs, the time
duration of an unknown signal that completes one cycle in
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Tektronix 464 Specifications

General

Brand	Tektronix
Model	464
Category	Test Equipment
Language	English