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S i g n a l w i t h o u t u n d e s i r e d c o m p o n e n t
Fig. 16
TIME MEASUREMENTS
This is the procedure for making time measurements be-
tween two points on a waveform. T h e combination of the
S W E E P T I M E / D I V and the horizontal distance in divisions
between the two points is used in the calculation.
Procedure:
1. Apply the signal to be measured to the I N P U T jack and
select the vertical M O D E switch to the channel to be
used. Adjust each control for a normal display. Adjust
V O L T S / D I V and S W E E P T I M E / D I V controls so that the
waveform can be easily measured.
Be sure that the V A R I A B L E control is set to C A L .
2. Using the *
P O S I T I O N control, set one of the points to
be used as a reference to coincide with the horizontal
centerline. Use the A> P O S I T I O N control to set this
point at the intersection of any vertical graduation line.
3. Measure the horizontal distance between the two points.
Multiply this by the setting of the S W E E P T I M E / D I V
control. If horizontal " x 10 M A G " is used, multiply this
further by 1/10.
Time = Horizontal distance (div) x ( S W E E P T I M E / D I V set-
ting) x " x 10 M A G " value"
1
( 1 / 1 0 )
A d j u s t t o t h e v e r t i c a l
s c a l e w i t h : < >
P O S I T I O N .
H o r i z o n t a l d i s t a n c e
Fig. 17
[ E X A M P L E ]
For the example shown in Fig. 17, the horizontal distance
between the two points is 5.4 divisions.
If the S W E E P T I M E / D I V is 0.2 ms/div, then
Time = 5.4 (div) x 0.2 (ms) = 1.08 ms
F R E Q U E N C Y MEASUREMENTS
Frequency measurements are made by measuring the period
of one cycle of waveform and taking the reciprocal of this
time value as the frequency.
Procedure:
1. Measure the time of one period by the procedure under
the preceding paragraph " T I M E M E A S U R E M E N T " .
2. The frequency is the reciprocal of the period measured.
Freq = — ? - —
period
1 c y c l e = 4 0 us ( 5 j u s / d i v . x 8 d i v . )
Fig. 18
A d j u s t t o h o r i z o n t a l c e n t e r
l i n e w i t h
*
P O S I T I O N
25
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