D-0100778 Rev C
91
Paired Inserts:*
-10 dB HL to 95 dB HL
Masking Intensity Range
Speech Noise:
Air Conduction -10 dB HL to 95 dB HL (TDH 50P)
Bone Conduction -10 dB HL to 50 dB HL (mastoid)
-10 dB HL to 35 dB HL (forehead)
Sound Field:
-10 dB HL to 80 dB HL
White Noise:
Air Conduction
-10 dB HL to 95 dB HL (TDH50)
Bone Conduction -10 dB HL to 50 dB HL (mastoid)
-10 dB HL to 35 dB HL (forehead)
Sound Field
-10 dB HL to 80 dB HL
Special Tests
ALT (ABLB):
Tone alternating between Channel 1 and Channel 2: Channel 1 is 400
msec ON, 400 msec OFF followed by Channel 2, 400 msec ON, 400
msec OFF.
SISI:
An intensity increment is added to a tone in the selected channel for
200 msec, every 5 seconds. The HL increments are in 1, 2 or 5 dB.
High Frequency:*
Pure tone testing in the frequency range of 8,000 Hz to 20,000 Hz
using circum-aural headphones
TEN:
TEN masking noise will be presented to the test ear. Pure tone stimuli
between 500 and 4000 Hz may be used at 1, 2, or 5 dB increments to
obtain TEN thresholds.
QuickSIN:
Six (6) sentences with five (5) key words per sentence are presented
in four-talker babble noise. The sentences are presented at pre-
recorded signal-to-noise ratios. The SNR’s used are 25, 20, 15, 10, 5,
and 0.
BKB-SIN:
18 List Pairs. The sentences are presented at prerecorded signal-to-
noise ratios that decrease in 3-dB steps. Each list in the pair is
individually scored, and the results of the two lists are averages to
obtain the List Pair score. Results are compared to normative data to
obtain the SNR Loss.
Special Tests
MLB
(User Defined)
Lombard test
Pure Tone Stenger
Speech Stenger
SAL
Communications and
Talk Forward:
Permits the tester to speak through the test microphone into the
Monitoring
selected transducer at approximately the intensity level set by the
front panel controls.
Talk Back:
Allows the tester to listen to comments from the patient in the testing
booth.
Monitor:
The monitor headset or monitor speaker built into the instrument
housing can be used by the tester to listen to Channel 1, Channel 2,
Aux intercom, and/or Talk Back signals.
Aux Intercom:
The built-in Auxiliary Intercom and Assistant headset allows the
tester to speak directly to an Assistant without the patient hearing the
conversation and allows the assistant to hear what is being presented
to the patient.
Environmental
Temperature:
+15ºC to 40ºC (59 to 104ºF)
Requirements
Relative Humidity:
10% to 95% (non-condensing)
Ambient Pressure Range:
98 kPa to 104 kPa
Background Sound Level:
<35 dB(A)
Storage Temperature:
0ºC to + 50ºC (32ºF to 122ºF)
Transport Temperature:
-20
º
C to + 50
º
C (-4
º
F to 122
º
F)
