Tektronix AFG3000 Series Manual page 4

Tektronix AFG3000 Series Function Generator Guide v1.0
3 – Waveform Characteristics
Voltage V
Amplitude
Offset
Figure 2: Characteristics of a periodic waveform (Tektronix terminology)
The amplitude of the waveform is the peak-to-peak variation
specified as a phase angle (in degrees).
The waveform's vertical characteristics (i.e., voltage) can be specified as an amplitude and offset, or as
high and low levels.
Some useful conversion equations are:
1
=
Frequency
Period
1
=
Period
Frequency
1.00
0.50
1.00 V
0.25 V
Figure 3: Example sinusoidal waveform with numeric values
1
Math textbooks often define the amplitude as half the peak-to-peak variation. However, Tektronix assumes the
amplitude is the full peak-to-peak value.
Period
Phase
=
Amplitude
High
=
Offset
V
1.0
1.0 ms
-90°
1
in voltage. The horizontal shift can be
−
High Low
High
+
Low
Low
2
2.0
Ampl = 1.00 V
Offset = 0.25 V
High = 0.75 V
Low = -0.25 V
3
Portland State University
High
Time t
Low
Amplitude
= +
Offset
2
Amplitude
= −
Offset
2
+0.75 V
+0.25 V
t (ms)
3.0
-0.25 V
Phase = -90°
Period = 1.0 ms
Freq = 1 kHz