AT7016
User Manual
12
Horizontal factor
Shown in figure 4-6, distance between A & B is 8 Div. sensitivity is 2
µ
S/Div, Horizontal factor x 1,
then Time measurement is 16
µ
S
Fig 4-6
4.3.2
CYCLE & FREQUENCY MEASUREMENTS
Shown in Fig 4-6, frequency measurements are made by measuring the time period of one cycle
of waveform (T), and calculating the frequency that equals the reciprocal of the time period. For example,
T=16
µ
S, then frequency is:
1
F =1/T = ------------------ = 62.5 KHz
16
×
10
-6
4.3.3 PULSE RISE TIME AND FALL TIME MEASUREMENTS
For rise time and fall time measurements, the 10% and 90% amplitude points are used as starting and
ending reference points.
(1) Apply a signal to the input jack [19].
(2) Use the VOLTS/DIV and VAR controls to adjust the waveform peak to peak height to five
divisions.
(3) Adjust vertical position so that the tops of the waveform coincide with 100% point, while the
bottoms of the waveform coincide with 0% point.
(4) Adjust Sweep switch to obtain the positive-going direction or negative-going direction of the
waveform on the screen.
(5) Use the horizontal POSITION control to adjust the 10% points to coincide with a vertical
reference line.
(6) Measure the horizontal distance in divisions between the 10% and 90% points on the
waveform (divisions).
(7) Pulse rise time and fall time measurement is calculated by the following equation:
A
B
