Audiometry introdution

Please read the safety information before proceeding. For general operational instructions, please refer to the section: “General remarks to the operation.” Be sure to perform required maintenance and regular checks of the ACAM System.

Note: Specialized personnel should only operate the ACAM System and the audiometer.

General information on measuring mode and edit mode:

Go Button disabled: Edit Mode

The <go> button is not pressed. In this mode, all other buttons in the selection bar are accessible and can be selected.
No sounds are presented.
Curves can be entered or deleted.

Go Button enabled: Measuring Mode

The <go> button is pressed.
A measurement is enabled, starting, or still running. In this mode, all other buttons in the selection bar are gray and cannot be selected. This means that all other selections are locked during a measurement.
An audiometric measurement can be performed. The audiometer is enabled.
A green point is continuously blinking when the audiometer is enabled, which symbolizes that the software is connected to the ACAM control unit and functioning correctly.

It is possible to control the audiometer using the keyboard of your computer. Figure 121 shows the key assignments of the keyboard that are connected to the audiometer. Please use this table as reference if desired.

Figure 121: Keyboard layout for controlling the ACAM System audiometer

Status of the audiometer:

The audiometer has three different test modes.

	Click <tone> to enable tone audiometry.
	Click <speech> to enable speech audiometry.
	Click <snr> to enable sentence tests.

Function of the buttons:

Figure 122: Button bar showing an example of tone audiometry.

The buttons are arranged in groups, symbolized by the red lines in Figure 122. A group represents a functional unit. Only one button within a group may be selected. Therefore, if a button within a group is enabled then another pressed button is disabled.

In Figure 122 the groups are:

Group 1: Selection of the measuring method

Group 2: Selection of the side

Group 3: Selection of the measuring procedure

Group 4: Talk back microphone on/off

Group 5: Audiometer on/off

Group 6: Setup and Printing

For a description of the specific button functions, please refer to the sections: “Tone audiometry,” “Speech audiometry,” and “SNR measurement.”