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SECTION
General Information
1 .l
SUMMARY
The Model 3933A Phase Shifter is designed for use in con-
junction with a Model 3930A Multifunction
Synthesizer.
Together, Mode13933A and Model 3930A form a variable
phase, multi-phase oscillator with a phase setting range
from -360 to 360". Phase resolution is 0.1". The frequency
range is the same as the Model 3930A.
Five output waveforms, $,2/,-rL,n,and\jare
available. Each waveform has a maximum output of 30V
p-p (no-load) and 15V p-p into 5OQ. Waveform and am-
plitude may be set independently of the Model 3930A or
another Model 3933A. Waveform output is isolated from
the Model 393OA, or another Model 3933A, allowing a
wide range of applications. Multiple 3933A units may be
combined with a single 3930A to create a multi-phase os-
cillator system.
Phase output is directly synthesized by a custom LSI digi-
tal IC, resulting in high accuracy and stability, and short
phase switching time.
In addition to phase sweep and amplitude modulation
(AM), variable square-wave duty cycle is also provided.
Parameter settings are easily made using either the front
panel keys and/or the modify knob.
The Model 3933A is equipped with a standard GPIB
(IEEE-488) interface, and can be programmed over the
bus to produce the same operating modes and parame-
ters that can be controlled from the front panel.
The Model 3933A uses a two-line, 40-character liquid
crystal display to indicate selected functions, parameters,
and pertinent messages.
1.2
FEATURES
Wide phase setting range: -360" to 360", with resolu-
tion of 0.1".
High output and high AC voltage accuracy: 30V p-p
(no load), 15V p-p into 5OQ ti.5% (-5OkHz, sine wave,
above 3V p-p).
A total of 5 units of Model 3933A may be combined
with a Model 3930A to provide up to a 6-phase oscilla-
tor system.
Two-line, 40-character liquid crystal display.
Five output waveforms: %,2/,l,n,and\l.
Variable square wave duty cycle (5% to 95%, below
100 kHz).
Multiple phase sweep functions. Each setting digitally
synthesized according to input from the front panel
numeric keypad or the modify dial.
Low distortion ratio (<O.l%, 1OHz to lOOkI&, above
30.0mV p-p, AUTO output range mode).
Isolated waveform output.
Battery backed-up memory can retain up to 10 groups
of parameters. At power-on, it will automatically set
l-l
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