Audioscan Verifit - Manual (Page 49)

Verifit ® User's Guide Version 3.12  May 2015
SPLIV minus (RTG + 60). A positive TLS indicates greater output when listening in a room loop than when
using the microphone.
ANSI telephone simulator (TMFS) test
ANSI S3.22 requires that the gain control be set to RTP (1996) or RTS (2003) before running this test. The
reference test gain (RTG) is required in order to calculate the STS (1996) or RSETS (2003). The easiest way to
meet both requirements is to run a [Linear] or [AGC] test before running this test. See ANSI 1996 Linear and
AGC tests; ANSI 2003 Linear and AGC tests
1. First, complete an ANSI [Linear] or [AGC] test, then press .
2. Highlight & [Test box measures], then highlight and [Telecoil].
3. Set the aid to ‘T’ (telecoil input).
4. Highlight and [Start TMFS test]. Test setup instructions are displayed.
5. Position the aid on the ‘T’ inscribed on the test chamber floor. BTE aids should lie as flat as possible on the
test chamber surface, while custom aids should be oriented with their faceplate parallel to the top surface (if
possible) and touching it as shown.
6. Press to start the test.
7. While maintaining the orientation of step 5, move the hearing instrument around on the test chamber surface
to maximize the number shown in the ‘Maximize Average-SPLITS Value’ box.
8. Without moving the hearing instrument, press to store the Average (HFA-or SPA) SPLITS value
and run the SPLITS curve.
If an RTG has been previously obtained, the STS or RSETS will be shown.
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