A N Y I N D I V I D U A L A D D R E S S O R F U N C T I O N
D A T A B I T M A Y B E P O S I T I V E O R N E G A T I V E
D E P E N D I N G U P O N T H E C O D E D I N P U T
Fig. 6. Family of time-related waveforms from typical digital circuit in Fig. 5
Distortion Measurement:
Distortion of an amplifier may be measured with this os-
cilloscope. This measurement is especially variable when
the slope of a waveform must be faithfully reproduced by an
amplifier. Fig. 7 shows the testing of a circuit using a
triangular wave, such as is found in the limiter circuit of a
transmitter modulator. The measurement may be made us-
ing any type of signal; merely use the type of signal for
testing that is normally applied to the amplifier during nor-
mal operation. The procedure for distortion testing is as
follows:
A D J U S T P O S I T I O N C O N T R O L S
T O S U P E R I M P O S E W A V E F O R M S
D I R E C T L Y O V E R E A C H O T H E R
S U B = D I S T O R T I O N
Fig. 7. Distortion measurement
11
A D J U S T S O B O T H
W A V E F O R M S A R E
S A M E A M P L I T U D E
A M P L
No.
1
A M P L
No. 2
