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5. TIME MEASUREMENTS
(1) Ordinary measurement
Time between two points on a wave can be measured from
the SWEET TIME/DIV value and horizontal distance bet-
ween two points.
Procedure:
1. Apply the signal to be measured to the INPUT jack. Set
the vertical MODE to the channel to be used. Set the
AC-GND-DC to DC, adjusting VOLTS/DIV and SWEEP
TIME/DIV for a normal display. Set the VARIABLE con-
trol to CAL position.
2. < • POSITION control to set this point at the intersec-
tion of any vertical graduation line. Using the • POSI-
TION control, set one of the points to be used as a
reference to coincide with the horizontal centerline.
3. Measure the horizontal distance between the two
points.
Multiply this by the setting of the SWEEP TIME/DIV con-
trol to obtain the time between the two points. If
horizontal " x 10 MAG " is used, multiply this further by
1/10.
Using the formula:
Time = Horizontal distance (div) x (SWEEP TIME/DIV set-
t i n g ) x " x 10 M A G " value
1
Adjust to the vertical
scale w i t h + *- P O S I T I O N
Horizontal distance
b e t w e e n 2 signals
Fig. 38
[EXAMPLE]
For the example, the horizontal distance between the two
points is 5.4 divisions.
If the SWEEP TIME/DIV is 0.2 ms/div we calculate. (See
Fig. 38)
Substituting the given value:
Time =5.4 (div) x 0.2 (ms/div) = 1.08 ms
26
(1/10)
Adjust to horizontal
center line w i t h
t POSITION
(2) Cursor measurement
1. In the same way as the ordinary measurement, adjust
the waveform to be measured to an easy-to-observe
point.
2. Set the cursor mode to AT.
3. Adjust the A REF cursor to the left of the two point
to be measured, and the A cursor to the right.
4. Measured value is displayed in the upper right part on
the screen posterior to A T.
R E F cursor
6. TIME DIFFERENCE MEASUREMENTS
(1) Ordinary measurement
Time difference between two synchronized signals can be
measured as follows:
Procedure:
1. Apply the two signals to CH1 and CH2 INPUT jacks.
Setting the vertical MODE to either ALT or CHOP mode.
Generally for low frequency signals CHOP is chosen
with ALT used for high frequency signals.
2. Select the faster of the two signals as the SOURCE and
use the VOLTS/DIV and SWEEP TIME/DIV to obtain an
easily observed display.
Set the VARIABLE control to CAL position.
3. Using the • POSITION control set the waveforms to the
center of the CRT display and use the <«• POSITION
control to set the reference signal to be coincident with
a vertical graduation line.
4. Measure the horizontal distance between the two
signals and multiply this distance in divisions by the
SWEEP TIME/DIV setting.
If " x 10 M A G " is being used multiply this again by
1/10.
Using the formula:
Time = Horizontal distance (div) x (SWEEP TIME/DIV
setting) x " x 10 M A G " value"
Measured v a l u e -
cursor
Fig. 39
1
(1/10)
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