Chapter 3
A) Use the STIMULUS up and down arrows to select the desired high
frequency stimulus.
B) Use the INTENSITY up and down arrows to set the intensity level.
Try 3 to 4 dB below threshold level for selected stimulus.
C) Press EXIT.
6) The activator stimulus and intensity may now be selected.
A) Use the STIMULUS up and down arrows to select the desired
stimulus.
B) Press the STEP SIZE softkey to select 1, 2, or 5 dB steps.
C) Use the INTENSITY up and down arrows to set dB level. Start the
intensity of the activator at a very low level, e.g., 40 dB to determine
threshold value.
• IPSI Stimuli available- 0.5, 1, 2, 4 kHz, EXT, and N-A.
• CONTRA Stimuli available- 0.25, 0.5, l, 2, 4 kHz, BBN, EXT,
and N-A.
7) Press PRESENT to simultaneously present facilitating and activating
stimuli. First press START if pressure was not maintained from a prior
reflex test.
8) Press ERASE to delete sub-threshold presentations or unwanted data,
i.e.:
amplitudes below 0.02 ml.
9) Press STOP to terminate testing.
Pressure Swallow Test (intact TM)
1) Select test mode by pressing ETF. Default test parameters for ETF-
INTACT TM are displayed above the softkeys on the LCD.
2) Press START to initiate automated test (TYMP 1).
3) View ongoing test results as shown on graphic display area, or pressure
compliance admittance meters.
4) Press HOLD when desired pressure sweep limit is reached.
5) Follow the user directions displayed on the status line of the LCD prior to
obtaining the TYMP 2 results using the CONTINUE softkey.
6) Press HOLD when the desired pressure sweep limit for TYMP 2 is reached.
7) Follow user directions displayed on status line of LCD prior to obtaining
TYMP 3 results using CONTINUE softkey.
8) Press STOP when desired pressure sweep limit for TYMP 3 is reached.
9) If the Eustachian tube is functioning properly, view the shift in pressure
peaks of TYMPS 2 and 3 relative to TYMP 1 on the graphic display area.
Numeric summary data is displayed at the right of the
compliance/admittance meter.
Perforated Ear Test (Perforated TM)
1) Select ETF-Perforated TM by pressing ETF (if not already pressed) and
RETURN followed by PERF TM softkey.
2) Position eartip within ear canal.
3) Press START to initiate the pressure sweep.
Grason-Stadler
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