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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 between
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.
. <P» 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.
. 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 horizon-
tal ''x10 MAG "' is used, multiply this further by 1/10.
Using the formula:
Time
= Horizontal distance (div)
x (SWEEP TIME/DIV set-
ting)
x '" x10 MAG" value-1 (1/10)
Adjust to the vertical
scale with <4 ® POSITION
Fe GS
| Oh
ele
ee
ifGe 2eekR
| —___...._|
Horizontal distance
between 2 signals
Adjust to horizontal
center line with
+ POSITION
Fig. 24
[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.
24)
Substituting the given value:
Time = 5.4 (div) x 0.2 (ms/div)=1.08 ms
24
(2) Cursor measurement (CS-5130 only).
1.
In the same way as the ordinary measurement.
adjust
the waveform
to be measured
to an easy-to-observe
point.
. Set the cursor mode to AT.
. Adjust the 4 REF cursor to the left of the two point to
be measured. and the A cursor to the right.
. Measured value is displayed in the upper right part on
the screen posterior to A T.
Measured value
aaa
eed
Pe
ee eae
PY TANT
EAT A
ALPE
NT TN
PEN
TA
PTE
MAT UT TN
Faience
con coe eed
ERE
4A REF cursor
A cursor
Fig. 25
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. Set-
ting the vertical MODE to either ALT or CHOP mode.
Generally for low frequency signals CHOP is chosen with
ALT used for high frequency signals.
. 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 contro! to CAL position.
. Using the * POSITION control set the waveformsto the
center of the CRT display and use the <4
POSITION con-
trol to set the reference signal to be coincident with a
vertical graduation line.
. Measure the horizontal distance between the two sig-
nals and multiply this distance in divisions by the SWEEP
TIME/DIV setting.
If
"x 10 MAG" is being used multiply this again by 1/10.
Using the formula:
Time
= Horizontal distance (div) x (SWEEP
TiME/DIV
setting)
x ''x 10 MAG" value—1 (1/10)
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