AC40 Support
Welcome to the product training for AC40 audiometer. On this page you will find an overview of all the available training materials and support.
Available Training
LCD Display Overview
The large LCD display screen provides the examiner visual reference to the testing procedure being conducted.
The top section provides the decibel level presented in channel one on the left side and channel two on the right side.
The middle section is reserved for the frequency being tested as well as the current test screen.
This identifier does chang based on the selection of the test.
Stimulus indicator is labeled with stem on the screen.
The indication light is seen on the left side when the stimulus is being presented to channel one or on the right side when presented to channel two.
When the reverse function is used, the stim label will remain on and is turned off when the tone switch is activated.
The response indicator is visible on the LCD screen when pure tone testing is conducted.
A light activates once the patient response button has been pressed.
A red indicator is used for patient response one and a blue is used for patient response two.
This allows the examiner to instruct the patient to use the corresponding button when the stimulus is heard to a specific ear.
The use of both response buttons is not required with the AC40 operation.
The VU meter indicator is visible when speech testing is conducted.
This is located in the middle of the display screen and allows the examiner to monitor the level through the microphone and CD player.
The channel one VU meter moves to the left for increased loudness whereas the channel two VU meter moves to the right.
These inputs can be calibrated by holding down the mic or CD button until the gain control displays.
Continue to hold down the button while rotating the attenuator wheel to change the gain level.
At the bottom of the screen are labels that are associated with the button below it.
These labels are context sensitive and depend on the selected test screen.
