Registered: 04/10/02
Posts: 1857
Loc: Gusev Crater, Mars
The analog model is better for calibration use since the needle is easier to 'average' by sight. The digital model is not as useful in this sense, and frankly I'm surprised they even market one.
Also one thing to note is that although it is great for level calibration the frequency response is (of course) not flat so it's not suitable to use with test tones without correction.