Tektronix 5110, Инструкция по эксплуатации

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Operating lnstructions-5110
To determine the peak-to-peak amplitude of an applied
signal that produces a vertical deflection of five divisions
with the above conditions, use the Signal Amplitude
formula (step 6):
(3 V) (5) = 15 volts
6. Measure the horizontal deflection in divisions and
determine the period by the following formula:
Period
Modified
Deflection
Factor
horizontal
X deflection
(divisions)
Sweep Rate
1. Apply a reference signal of known frequency to the
vertical input connector. Using the Seconds/Div switch
and variable Seconds/Div control, adjust the display so
that one cycle of the signal covers an exact number of
horizontal divisions. Do
not change the variable
Seconds/Div control after obtaining the desired deflec­
tion.
2. Divide the period of the reference signal (seconds)
by the product of the horizontal deflection in divisions
(established in step 1) and the setting of the Seconds/Div
switch. This is the
Deflection Conversion Factor.
Deflection reference signal period (seconds)
Conversion =------------------------------------------------------
Factor horizontal Sec/Div
deflection X
switch
(divisions)
setting
3. To determine the period of an unknown signal,
disconnect the reference and apply the unknown signal.
EXAMPLE: Assume a referencesignal frequency of 455
hertz (period 2.2 milliseconds), a Seconds/Div switch
setting of .2 ms, and a horizontal deflection of eight
divisions. Substituting these values in the Deflection
Conversion Factor formula (step 2):
2 2 mS = 1.375
(8) (0.2 ms)
Then, with a Seconds/Div switch setting of 50 µs, the
Modified Deflection Factor (step 5) is:
(50 µs) (1.375) = 68.75 microseconds/division
To determine the time period of an applied signal which
completes one cycle in seven horizontal divisions, use the
Period formula (step 6):
(68.75 µs) (7) = 481 microseconds
This product can be converted to frequency by taking
the reciprocal of the period (see application of Deter­
mining Frequency).
4. Set the Seconds/Div switch to a setting that
provides sufficient horizontal deflection to make an
accurate measurement. Do not readjust the variable
Seconds/Div control.
5. To establish a Modified Deflection Factor at any
setting of the Seconds/Div switch, multiply the
Seconds/Div switch setting by the Deflection Conversion
Factor established in step 2.
Modified
Deflection
Factor
Seconds/Div
switch setting
Deflection
X Conversion
Factor
Time Period Measurement
To measure the time (period) between two points on a
waveform, use the following procedure:
1. Connect the signal to the vertical input connector,
select either ac or de input coupling, and set the Volts/Div
switch to display about four divisions of the waveform.
2. Set the time-base triggering controls to obtain a
stable display. Set the Seconds/Div switch to the fastest
sweep rate
that will permit displaying one cycle of the
waveform in less than eight divisions (some non-linearity
may occur in the first and last graticule divisions of
display). Refer to Fig. 1-5.
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