audioscan RM500SL User Manual Download

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RM500SL

User's Guide Version 3.4



June 2011

keyboard enter HL values on the numeric keypad.

5. Press <Continue> when all points have been entered.

6. Repeat the process for Bone conduction, UCL and RECD if [Enter] has been selected for

any. If RECD is set to [Measure], see RECD (real-ear to coupler difference).

Assessment data choices

The following audiometric assessment parameters can be specified in the Speechmap
Audiometry setup box. Defaults are the last-used choices if test setup memory has been
turned on. See Saving test setup.

Target:

Select fitting targets from [DSL adult, DSL child, NAL-NL1, Camfit restoration,

Camfit equalization, None]. See DSL 5.0 in Speechmap, NAL-NL1 in Speechmap, Camfit
in Speechmap.

Age:

This is permitted for [DSL child] target only. Select client’s age in months from [1

months to 60 months] or years from [6 years to 10 years]. For children older than 10
yrs, previously fit using DSL, choose Adult.

Transducer:

Type of audiogram. Select from [Headphone, Insert + Foam, Insert +

Mold, Soundfield, ABR (eHL), ABR (nHL)]. If

Insert + Foam or Mold

is selected, the

appropriate RECD will be used to convert entered HL values to SPL values. If

Soundfield

is selected appropriate real-ear unaided gain (REUG) values @ 45 degrees azimuth, will
be used to convert HL values to SPL values. If

ABR (eHL)

is selected, entered thresholds

will be treated as behavioral pure tone thresholds. If

ABR (nHL)

is selected, nHL to eHL

conversion factors may be selected from [Default, Enter]. In either case, an insert
earphone is assumed for sound delivery and the appropriate RECD will be applied. Note
that, in some facilities, nHL is defined in such a way that it is effectively eHL; in these
cases, ABR (eHL) should be selected. See ABR nHL to eHL setup and Assessment data
choices – 2.

Bone conduction:

Select from [N/A, Enter]. If [Enter] is selected, an entry screen will

be provided after the air conduction thresholds have been entered.

UCL:

Uncomfortable Level. Select from [Enter, Average]. If measured UCL values are

entered, these values will be converted to real-ear SPL and used as real-ear saturation
response (RESR) targets. Note that DSL 5.0 has changed this term to Upper Limit of
Comfort (ULC). Regardless of the acronym, it is a narrow-band SPL that should never be
exceeded.

RECD:

Select from [Measure, Enter, Average]. If Average is selected, age-appropriate

real-ear to coupler difference (RECD) values will be used. If Measure is selected, you will
be required to measure the client’s RECD values or accept values from the RECD test. If
Enter is selected,

HA-2

RECD values may be entered and are required

at all 9

audiometric frequencies

Binaural:

Select from [Yes, No]. Determines if fitting targets will be adjusted for

binaural summation effects.

REDD:

Real-ear-to-Dial Difference. [Average] (this cannot be changed). REDD values are

similar for adults and children. If Headphone is selected as the transducer type, adult
average values will be used to transform dB HL audiometry to dB SPL.

ABR nHL to eHL:

Normalized HL to estimated HL conversion factors. Permitted only if

[Transducer] = ABR (nHL). Select from [Default, Enter]. If [Enter] is selected, an entry
screen will be provided after threshold data have been entered. Otherwise default factors