Advertisement
Model 8012A
Section I
GENERAL INFORMATION
1-1
INTRODUCTION
1—2
The Hewlett-Packard Model 8012A Pulse
Generator is a multi-purpose pulse source, capable of
generating a wide variety of output pulse waveforms,
either as single pulses or as pulse trains with repetition
rates from 1 Hz to 50 MHz.
The
transition times,
amplitude, width and polarity of the output pulse(s)
may be varied as required by means of easily identified
front panel controls. The pulse width may be deter¬
mined by the pulse generator's width control (normal
mode), by external signals (external width mode), or by
switching the width control to the square wave position —
this causes the output pulse width to equal one half the
pulse period. With the offset control in the off position
the square wave is symmetrical above and below zero
volts. All the output pulses may have their baseline
shifted above and below the zero volt reference line by
means of the front panel offset controls. Trigger pulses
are available for synchronising external circuits and a
delay control enables the delay time between the trigger
and output pulses to be varied as required. Synchronous
gating of the trigger and output pulses is possible by
applying a pulse to the gate input socket.
1—3
Three modes of operation are possible as
follows:
a.
Normal Mode:
In this mode the
internal
oscillator
determines
the
repetition rate of the output pulses.
The oscillator may be triggered inter¬
nally, externally, or manually; it may
also be gated.
A trigger pulse is
generated for each output pulse and
the delay between them
may be
varied.
b.
External Width Mode: In this mode
external pulses applied to the input
socket on the rear panel determine
the width and repetition rate of the
output pulses. Gating is not possible.
Note that the pulse available at the
trigger output socket, being derived
from the internal oscillator, is not
related to the external width output.
Figure 1-1 HP Model 8012A Pulse Generator
Page 1—3
Advertisement
