Operating instructions

The Technical Stuff
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25
Maintenance Information
Calibrations
Zero Set
The 1176LN meter 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 the Input and Output
knobs.
The procedure for adjusting the meter is as follows:
1. Power on the 1176LN.
2. Depress the Meter GR pushbutton.
3. Set the Input control fully off (turn the knob fully counterclockwise).
4. Use a small screwdriver to slowly adjust the Zero Set potentiometer so that the meter reads
0 dB. Watch how the meter settles before completing the calibration.
 There are no user serviceable parts inside the 1176LN. Unit calibration, as well as repair,
should only be performed only by qualified service personnel. These calibration
procedures are provided only for use by qualified service technicians.
 Never turn the screw on the meter itself! This is factory set and should not be altered.