Universal Audio 2-1176 Dual 1176LN - Manual (Page 27)

The Technical Stuff
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Maintenance Information
Meter Calibration
The 2-1176 meters may occasionally need to be calibrated. This is accomplished by adjusting the
Zero Set potentiometer, located through a small hole on the front panel between each channel’s Input
and Output knobs.
The procedure for adjusting the meter is as follows:
1.
Power on the 2-1176.
2.
Set the Meter switch for the channel being calibrated to its +4 position.
3.
Set the Input control for the channel being calibrated fully off (turn the knob fully
counterclockwise).
4.
Use a small screwdriver to slowly adjust that channel’s Zero Set potentiometer so that its
meter reads 0 dB. Watch how the meter settles before completing the calibration.
Changing Voltage
The 2-1176 can operate from 100 V to 240 VAC / 50-60 Hz. The internal power supply is self-sensing
and will automatically work throughout this voltage range.