HP RM500SL manual REM Manual Control, SPL or HL scale, FastFacts 11.5 Hide or show REM curves

11.4 SPL or HL scale

In Speechmap and Insertion gain tests you may view results in either dB HL or dB SPL.

Insertion gain tests view the hearing aid as improving the sound-field threshold. In Insertion gain, the HL scale presents aided results as improved sound-field thresholds while the speech region remains fixed.

Speechmap tests view the hearing aid as increasing the ear canal SPL. Speech gets louder but the threshold remains fixed. On the HL scale in Speechmap, normal ear canal threshold becomes the 0 dB HL line and all data is replotted using this reference. A physical interpretation of the data is difficult and the use of HL in Speechmap is not recommended. All instructions given in this guide assume the SPL Speechmap scale.

To change the scale:

Highlight and <PICK> [Scale] to toggle between a dB SPL and dB HL scale.

FastFacts 11.4: SPL or HL scale

11.5 Hide or show REM curves

On screens capable of showing more than one curve, you may show or hide test curves. Hiding a curve does not erase it. To erase curves use the <Session> key.

To hide or show test curve(s):

1)Highlight, then <PICK> Curve [Hide/Show].

2)Highlight, then <PICK> the desired test curve to toggle between Hide or Show. The curve will toggle on or off when selected.

3)Press <Continue> to return to the test screen.

FastFacts 11.5: Hide or show REM curves

12REM Manual Control

12.1Section overview

Manual control displays the reference microphone SPL, the probe microphone SPL, their difference in dB (gain) and probe microphone signal distortion at any selected 1/12th octave frequency and at a selected input level from 40 to 90 dB (in 5 dB steps) and at 0 dB (off). With the stimulus turned off, the probe module becomes a dual channel sound level meter with a choice of 1/12th, A and C filters in both channels.

This section covers the following topics:

12.2: Manual control measurements 12.3: Sound level meter using REM probe

FastFacts 12.1: REM Manual Control

0611 RM500SL User’s Guide Version 2.8 Page 56