OPERATING INSTRUCTIONS

INPUT VOLTAGE: AC input models operate on 105-125 VAC, 47-420 Hz. (Models with an input of 210-250 VAC, 47420 Hz are available on special order).

OUTPUT VOLTAGE ADJUSTMENT: Output(s) factory set to within +1% of the nominal output voltage rating. (AC input models having outputs of I to 9 volts, within 2%.) If necessary, outputs can be more precisely calibrated by the use of an external trim resistor connected between the T/C pin and one of the output pins. With certain units, connecting the resistor from the T/C pin to the (+) output pin increases voltage, and connecting to the (-) output pin decreases it; with other units, the reverse applies. Begin trimming with approximately 1 megohm resistance, and decrease resistance until calibration is attained. Do not use a resistance value of less than 20 K. Trimming the output to a voltage other than the nominal rating may adversely affect performance and may result in damaging the supply.

SHORT CIRCUIT PROTECTION: All OMEGA miniaturized power supplies are of rugged construction and designed to withstand substantial overloads or short circuits for reasonable lengths of time. Prolonged operation under overloaded or shorted conditions is not recommended.

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Omega Engineering PSP, PST instruction sheet Operating Instructions