Avtech AVR-G1-B, Instructions Manual, Page: 5 / 42

INTRODUCTION
The AVR-G1-B is a high performance, GPIB and RS232-equipped instrument capable
of generating up to 250V at repetition rates up to 10 kHz into high-impedance loads of
10 kΩ or higher. The pulse width is variable from 100 ns to 1 ms, and the duty cycle
may be as high as 80%. Rise and fall times are fixed at less than 20 ns. The AVR-G1-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.
The output voltage polarity depends on the model number:
"-P" units: up to +250 Volts
"-N" units: up to -250 Volts
"-PN" units: up to ±250 Volts
The AVR-G1-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.
-ADA SPECIAL OPTION
Units with the -ADA special option have a minimum pulse width of 50 ns, rather than the
standard 100 ns.
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