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The main disadvantage of analog controls is
stability and security. The settings of analog potentiometers
can drift over time.
More importantly, the settings can be
changed accidentally with potentially serious consequences.
The New PL series introduces S-Lock. One
press of the Lock button transfers control of voltage and
current from the analog controls to internal digital circuitry.
This offers not just complete security, but
exceptional stability as well with each setting controlled by a
high resolution instrumentation quality DAC.
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