This device has two DC outputs ranged from -500 to 0 [V]. The output voltages can be controled by tuning the knobs in the front panel. The output voltage can be measured from the red and black output monitor connectors in the front panel using a volt meter. The readouts is scaled by 1/100 of the real output voltage. Note the readout has only 5% precision which translated approximately 3 [V] at the 200 [V] setting. 1 turn of the dial corresponds to 50 [V]. The output voltage has to be measured directly at the output cable when the precise voltage is required. Turn of the fan to reduce the heat in the box when the device is operated long period. No volatage drop in the outputs was observed when all the both channels and the fan are operated simultaniously while a test. 
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