Frye FONIX 7000 - Manual (Page 185)

Appendix B
177
Calibration
B.1 Calibrating the microphones
To calibrate the 7000 Test System’s microphones, you will need a sound level
calibrator such as the Quest CA-12, the 14mm-to-1 inch microphone adapter
provided with your 7000 Test System, and a small flathead screwdriver. If you
are calibrating the probe microphone, you will also need the probe microphone
adapter and a Phillips-head screwdriver.
Figure B.1A—Equipment for calibrating the 7000 microphones.
To calibrate the M1950E coupler microphone:
1. Press [MENU] from the Opening screen to open the Setup Menu.
2. Press [F6] to open the Microphone Calibration window.
3. Insert the 14mm-to-1 inch adapter into the sound level calibrator.
4. Insert the M1950E coupler microphone into the adapter.
5. Turn on the sound level calibrator and look at the “Coupler Mic” level in the
Microphone Calibration window. It should match the calibrated tone emit-
ted by the sound field calibrator. This is usually 110 dB SPL or 114 dB SPL.
Check your calibrator for details.