A delay control and a sync output are provided on all models for oscilloscope triggering purposes. The units can also be triggered externally using a TTL-level pulse. These models are protected from overload conditions (such as excessively high duty cycle or short circuited load) by an automatic control feature that limits the output power for as long as the overload condition persists.
Either output polarity or an optional dual output polarity can be provided. Polarity inversion in dual polarity -C units is accomplished by means of a two-position switch. -B units provide keypad / computer control of the polariy.
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