In addition to respectively delivering up to 750 and 1,500 VA, models 9803 and 9805 can measure AC voltage, current, and power parameters. Both power sources can operate in 0–300 V continuous sweep range or 150 V/300 V auto-switching range with adjustable start and stop phase angle control. Built-in PLD (power line disturbance) simulator, list, sweep, and dimmer mode makes these units suitable for simulating various AC power conditions.