Musical Surroundings Fozgometer Testing And Calibration Procedure

Fozgometer Testing and Calibration Procedure (revised, 4/12/2017)

All Fozgometer units are pre-calibrated at the factory and are double checked for accuracy prior

to shipping. To calibrate the unit in the field follow the procedure below. You will need:

-a small slotted screwdriver

-a cable (1/8" Stereo mini-jack to RCA stereo splitter cable or RCA to RCA stereo cable)

-fresh 9v battery.

If using a splitter cable, attach the 1/8" plug to your computer's headphone output jack and

attach the corresponding left and right RCA plugs to the Fozgometer. Make sure your

computer's output volume is set to max level. Play the tracks using your computer's audio

playback software. On some systems you may be able to play the tracks directly from your web

browser.

If burning a CD, make sure that the CD is burned to audio format (which will play in any

standard CD player) and not as a data CD. You may need to consult your computer's audio

software instructions to confirm the correct process for burning an audio CD. Once this is done,

connect your CD player's outputs to the Fozgometer with a standard RCA cable and play the

CD.

Before proceeding with the calibration procedure, ensure that the battery in your Fozgometer is

fresh and is generating a full 9 volts. Rechargable batteries are not recommended.

1) Track One: 1 kHz sine wave, L channel 0 dB, R channel 0 dB

2) Track Two: 1 kHz sine wave, L channel -20 dB, R channel 0 dB

3) Track Three: 1 kHz sine wave, L channel 0 dB, R channel -20 dB

Here are links for both MP3 and .WAV versions:

http://musicalsurroundings.com/audio/fozgometer-test-tones/Track-1.mp3

http://musicalsurroundings.com/audio/fozgometer-test-tones/Track-2.mp3

http://musicalsurroundings.com/audio/fozgometer-test-tones/Track-3.mp3

http://musicalsurroundings.com/audio/fozgometer-test-tones/Track-1.wav

http://musicalsurroundings.com/audio/fozgometer-test-tones/Track-2.wav

http://musicalsurroundings.com/audio/fozgometer-test-tones/Track-3.wav

Table of Contents

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Page 1 CD. Once this is done, connect your CD player's outputs to the Fozgometer with a standard RCA cable and play the Before proceeding with the calibration procedure, ensure that the battery in your Fozgometer is fresh and is generating a full 9 volts.
Page 2 Calibration Procedure: 1) Remove Fozgometer from case and set the unit on a flat surface and install a fresh 9v battery. Ensure that the left and right RCA plugs are connected to the Fozgometer and to your audio sorce (CD or computer). Turn the Fozgometer ON.