Bradley 233 - Introduction; Performance

SECTION 1
INTRODUCTION
1.1 PERFORMANCE
The Bradley 233 twin channel pulse generator provides 0. 5Hz to 50MHz at up to 10 volts
positive or negative into 50fi.
Resistive or reactive loads of any magnitude may be driven. The 50n source impedance
('back match') at the generator will always produce a true 50fi source at the end of the cable.
The internal 50J2 can be switched out to provide full 10 volts into a 5052 external load.
Output Baseline offset provides any pulse amplitude from 0. 5 volts to 10 volts within the
limits ±10 volts. The parallel/serial delay allows pulse positions to be adjusted independ
ently or in groups.
The internal sum facility allows the two outputs to be summed without reduction in amplitude
or refelction in the interconnecting cables. This facility provides stepped or super-imposed
pulses up to 20 volts maximum amplitude.
Other features of the 233 are the internal burst facility by using the B delay generator as an
oscillator to be gated by the A width. The adjustable level control and slope selection per
mits triggering off any point on the input waveform. This operates down to zero frequency
whether on external trigger, gate or external width. A Trigger Indicator lights when the
input is correctly triggered.
Simplicity of operation is provided by the square-wave facility which eliminates the need to
adjust the delay and width controls.
The B period oscillator can be free-run independently of the A section thus providing
virtually two pulse generators in one instrument.
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