Impedance test indicators
Red
Poor
More than 12 k
Ω.
Testing is not possible; the
Start
button is disabled; only
Stop
can be pressed.
Balance
Indicates the difference in the skin impedance of the white and the red electrode. This value
should also be fairly low (less than 4 k
Ω
):
Green
Good
0 to 2 k
Ω
Yellow
Fair
2 to 4 k
Ω
Red
Poor
More than 4 k
Ω.
Testing is not possible; the
Start
button is disabled; only
Stop
can be pressed.
If impedance values are high
1. Make sure that the electrode cable is connected to AccuScreen.
2. Make sure that the electrodes are positioned correctly.
3. Make sure that the skin locations are clean.
Use water and a soft cloth to clean skin locations for all three electrodes well before testing.
4. If needed, attach new electrodes to see whether they will reduce the impedance values.
1. Press the
Start
button to start the test. (Depending on how your device is con-
figured, the test may start automatically if the indicators are green or yellow.)
5.5.3
The ABR test
The test as it progresses is shown on the display.
Pausing a test
•
If required, press the
Pause
button to suspend the test, for instance if the test pro-
gresses well but is suddenly influenced by noise or movements.
Otometrics - MADSEN AccuScreen
51
5 Testing with AccuScreen
