Audioscan Verifit - Manual (Page 60)

Verifit ® User's Guide Version 3.12  May 2015
Sound level meter using manual control
When set for a stimulus level of 0 dB (off), the Manual control mode allows the Verifit to be used as a sound
level meter. Sound at the test box reference microphone and the coupler microphone may be analyzed by 1/12th
octave, A-weighted or C-weighted filters. A and C-weighted measurements are limited to frequencies above 100
Hz and the averaging time and update rate are 384 ms.
1. Press <Tests>, then highlight and <PICK> [Test box measures], then highlight and <PICK>[Manual control].
2. Highlight and <PICK> the Level window, then highlight and <PICK> 0 dB stimulus level from the drop-
down list.
3. Highlight and <PICK> the Filter window, then highlight and <PICK> 1/12th octave, A-weighted, or C-
weighted from the drop-down list.
4. For 1/12th octave filter, highlight and <PICK> the Frequency window, then highlight and <PICK> the
desired frequency from the drop-down list.
5. Highlight and <PICK> [Start test] to start the test. [Start test] changes to [Stop Test]. To stop the
measurement, highlight and <PICK> [Stop test]. You may change Level and Frequency without stopping the
test.
NOTE: Microphone extension cables (VA-131 & VA-133) are available from Audioscan. Standard audio
extension cables should not be used. They will substantially increase noise levels.
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