Output II:

• Set meter to volts 20 VDC
• run 60 HZ on the generator with this single line: 60
• Touch the red probe to the center contact on the BNC connector
• Touch the black probe to the outer metal part of the BNC output connector

The meter should read approximately half of the full output voltage. If the volume knob is fully clockwise, the voltage on the meter will be about 6VDC