Avtech AVR-G5-B, Instructions Manual

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INTRODUCTION
The AVR-G5-B is a high performance, GPIB and RS232-equipped instrument capable
of generating up to ±220V (440V peak-to-peak) at repetition rates up to 100 kHz into
high-impedance loads of 100 kΩ or higher. The pulse width is variable from 200 ns to
500 ms, and the duty cycle may be as high as 80%. Rise and fall times are fixed at less
than 20 ns. The AVR-G5-B includes an internal trigger source, but it can also be
triggered or gated by an external source. A front-panel pushbutton can also be used to
trigger the instrument. The output pulse width can be set to follow an input trigger pulse
width.
When the output is “on”, the output waveform swings between -V
SET
/2 and +V
SET
/2,
where V
SET
is the programmed amplitude. The output voltage between pulses is -V
SET
/2
(not zero). When the output is “off”, the output voltage is zero.
The AVR-G5-B features front panel keyboard and adjust knob control of the output
pulse parameters along with a four line by 40-character backlit LCD display of the
output amplitude, pulse width, pulse repetition frequency, and delay. The instrument
includes memory to store up to four complete instrument setups. The operator may use
the front panel or the computer interface to store a complete “snapshot” of all key
instrument settings, and recall this setup at a later time.
The instrument is protected against overload conditions (such as short circuits) by an
automatic control circuit. An internal power supply monitor removes the power to the
output stage for five seconds if an average power overload exists. After that time, the
unit operates normally for one second, and if the overload condition persists, the power
is cut again. This cycle repeats until the overload is removed.
This instrument is intended for use in research, development, test and calibration
laboratories by qualified personnel.
5
200 ns to 0.5 sec
0V
0 to 440V
peak to
peak (V
SET
)
+V
SET
/2
+V
SET
/2