• Selectable A, B, and C networks
  • ANSI Type 0
  • Portable handheld instrument
  • Signal overload detector
  • Powered by single AA cell
  • Two year warranty


The AWN-2 is a pocket sized laboratory or field portable instrument offering A, B, and C frequency weighting functions complying with ANSI Type 0. The ± 2.5V signal range offers convenient interfacing to computer based data acquisition systems for field measurements or research and teaching applications. This instrument provides the frequency response function of the selected weighting network and the corresponding measurement of magnitude at each frequency point. The AWN-2 is offered as a calibrated Type 0 instrument or a NATA certified Type 0 instrument. Input and output overload detection is provided to preserve signal integrity.


All weighting networks ANSI S1, 42-1986 (R1998) Type 0
Typical A weighting noise spectral density < 80 nV/Hz(1/2)

Continuous-time S-domain functions
Push button digital control
Toggle action Power On/Off push button
Low battery indicator

Overload detector A, B, and C
Input and Output signal range ± 2.5 V (input protection)
BNC Input and Output connectors
Unity gain stable into 1000 pF load.

Instruction Manual
Download or view doc

Performance data:
Measured A, B, and C frequency-weighting characteristics

Battery Supply:
Single AA battery
Current consumption 15 mA

Black ABS case, blue lexan polycarbonate front panel
Surface mount electronics

22 x 65 x 120 mm (H x W x D)

154 grams (with battery fitted)

Twenty four month conditional

$499 Type 0 plus delivery
POA Type 0 NATA calibrated.