I have limited use with an SPL, but as per you picture the settings are correct except you need to select the SPL level on the Range.

Settings should be:

Weighting C
Response Slow
Range 70 or 80

If you want to calibrate to 75 DB's turn it to Range 70 and the needle should go to the Right +5 to achieve 75db.

The Range will be the minimum level it will start to pick up the sound I believe.

I hope this helps and is correct


Jack beat me, I guess I type slower...

Last edited by HAY; 01/04/07 06:46 PM.
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