Elenco 30MHz Dual Trace - Manual (Page 53)

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APPLICATION
Fir the example shown in Fig.8, the two points are separated by 4.4 divisions
vertically. If the VOLTS/DIV setting is 20 mV and a 10:1 probe is used, the voltage is
calculated as follows:
Voltage = 4.4 (div) x 20 (mV/DIV) x 10 = 880 mV
TIME MEASUREMENTS
(Refer to Fig.9)
This is the procedure for Making time (period) measurements between two points on
a waveform. The two point may be the beginning and ending of one complete cycle if
desired.
1. Connect the signal to be measured to the input connector and set the CH 1/CH 2
switch to the channel to be used. Set the VOLTS/DIV and sweep TIME/DIV
controls to obtain a normal display of the waveform to be measured. Be sure the
VAR SWEEP control is set to CAL.
2. Using the POSITION control, set one of the points to be used as a reference to
coincide with the horizontal center line. Use the X POSITION control to set this
point at the intersection of any vertical graduation line.
3. Measure the horizontal distance between the two point (at least 4 divisions
desirable for best accuracy). Multiply this by the setting of the sweep TIME/DIV
control to obtain the time between the two points. If x10 magnification is used,
multiply this further by 1/10.
The measurement is summarized by the following equation:
Time = Hor div x TIME/DIV
(x 1/10 if X10 is used)
100
90
10
0
Horizontal distance
Fig.9 Time Measurement
Adjust to the vertical scale with POSITION
Adjust to the horizontal
center line with POSITION