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0611 RM500SL User’s Guide Version 2.8 Page 44
8.9 ANSI telephone simulator (TMFS) test
FastFacts 8.9: 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 8.4:
ANSI 1996 Linear and AGC tests; 8.5: ANSI 2003 Linear and AGC tests
1) First, complete a [Linear] or [AGC] test, then press <Tests>.
2) Highlight & <PICK> [Telecoil].
3) Set the aid to ‘T’ (telecoil input).
4) Highlight and <PICK> [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 <Continue> 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 <Continue> to store the Average
(HFA-or SPA) SPLITS value and run the SPLITS curve.
9) If an RTG has been previously obtained, the STS or RSETS will be shown.