Getting Started
8
PS280 & PS283 User Manual
Turning On the Instrument
After you have ensured that the PS280 or PS283 is set up for the
proper line voltage and has the proper fuse (refer to Preparing the
Power Supply for Use on page 2), you are ready to turn it on.
CAUTION. To avoid damaging the PS280 or PS283, do not use it
when the ambient air temperature exceeds 40° C. Also, allow
adequate space at the rear of the instrument to permit the heat sink
to radiate heat.
1. Ensure that the POWER button is disengaged (out) and that the
instrument is turned off.
2. Plug the power cord into an appropriate power source.
3. Turn both VOLTAGE knobs counterclockwise to the minimum
setting.
4. Press the POWER button. The LED displays light up.
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