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Once in the Sensitivity mode, turn the Sensitivity dial clockwise to increase the sensitivity
and counter clockwise to decrease the sensitivity.
The Sensitivity control dial increases/decreases the sensitivity of the instrument
simultaneously with the sound level in the headphones.
NOTE:
The instrument needs to be in range for accurate testing.
If the sensitivity is too low
, a blinking arrow pointing to the right will appear and there
will be no numeric decibel visible in the display panel. If this occurs, increase the sensitivity
until the arrow disappears (in low level sound environments the arrow will blink
continuously, and it will not be possible to achieve a dB value until a higher intensity level is
sensed).
If the sensitivity is too high
, a blinking arrow pointing to the left will appear and there
will be no numeric decibel visible on the display panel. Reduce the sensitivity until the
arrow disappears and the numeric decibel value is shown.
NOTE:
The blinking arrow indicates which direction the Sensitivity Control Dial needs to be
turned.
The Sensitivity Control Dial controls the bar graph display.
Each click of the sensitivity dial changes the volume in the headset by 1dB
NOTE:
The actual incident sound wave dB does not change when the sensitivity is
adjusted. Only the headset volume.
TO ADJUST THE FREQUENCY
Look at the meter. The kHz indicator must blink to be able to tune the frequency.
If it is not blinking, “Click” the Sensitivity control dial one time and the kHz indicator in the
display panel will blink.
When the kHz indicator blinks, change the frequency by rotating the Sensitivity dial up
(clockwise) or down (counter clockwise).
