indicates the amplifier has low or little distortion:
waveform B indicates poor linearity and clipping:
while waveform C indicates crossover distortion.
6. Depress button R and observe the right channel
waveform.
FIG. 34 ( a ) NORMAL
(b) CLIPPING
(c) CROSS O V E R D I S T O R T I O N
Performance Limits
A l l ratings are nominal
M U L T I P A T H MODE OF O P E R A T I O N
Sensitivity: l00mV/cm
Frequency Response: DC to 50kHz (-3dB)
Input Impedance: 250,000 W
Signal Strength Polarity: Selectable positive or negative
STEREO MODE OF O P E R A T I O N
Sensitivity - L (Vertical Amp.): 1.75mV r m s / c m (5mV
P-P/cm)
Sensitivity - R (Horizontal Amp.): 1 75mV rms/cm (5mV
P-P/cm)
F r e q u e n c y Response: 5Hz to 50kHz ( - 3 d B )
Input Impedance: 250,000W
POWER LEVEL MODE OF O P E R A T I O N
Sensitivity 0.1 to 1000 average watts for lull scale
indication (+3dB) in 9 c a l i b r a t e d steps.
F r e q u e n c y Response: 5Hz to 100kHz ( -3dB)
Input Impedance: 75,000 W
Calibration: For bridging 4,8 or 16 ohm speaker loads
P R E A M P LEVEL MODE OF O P E R A T I O N
Sensitivity: 15mV rms f o r +3dB indication
F r e q u e n c y Response: 5Hz to 50kHz
Input Impedance: 250,000 W
SWEEP MODE OF O P E R A T I O N
Display modes: Left, right, or both (dual trace)
Sensitivity: 1.6mV rms/cm (4 5mV P-P/cm)
F r e q u e n c y Response: 5Hz to 50kHz ( - 3dB)
Input Impedance. 250,000 W
Sweep Frequency: 20Hz to 20,000 Hz in 3 Decade
ranges
Sweep Expansion: 0.25X to 5X
Sweep I rigger: The s w e e p is triggered only in the pres-
ence of an input signal.
In the single trace mode it is triggered
by the displayed w a v e f o r m .
In the dual t r a c e mode the trigger is
selectable: left channel, right channel,
or line f r e q u e n c y .
LEVEL I N D I C A T I O N MODE
Normal 250 m s rise time
500ms f a l l t i m e
Peak: 500ms rise time
25sec f a l l t i m e
Reset. 250 m s rise time
l00sec f a l l time
18