Frye FONIX FP40D User Manual

Page 82

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FONIX FP40 Portable Hearing Aid Analyzer

Plug in the monitor headset if you want to be able to “listen in” on the sound received in the client’s
ear. The monitor jack, marked “headphones” is found on the back of the FP40. The volume on the
headphones is controlled with the knob next to the jack.

5.1.1.2 To set up the internal sound field speaker

Remove the test box from the FP40 compartment:

• Lift the compartment lid on the right side of the FP40 and remove the foam coupler holder.

The test box is secured in the compartment with an interlocking stop in the back, a spring
catch in front, and velcro on the bottom. See Figure 5.1.1.2A.

spring catch

interlocking stop plates

velcro

speaker jack

recessed channel

slips over upright

speaker post

speaker jack

pop-up

speaker post

Side view

Top view

Figure 5.1.1.2A—Sound chamber/sound field speaker

• Release the front spring catch of the sound chamber by pulling it forward.
• Lift the test box up and forward to remove it from the compartment. There will be a little

resistance from the velcro on the bottom.

Install the test box/speaker on the metal post

• Locate the metal post on the right side of the compartment.
• Pull the far end of the post up and forward until it locks in the vertical position.
• Open the test box and mount the speaker on the pole. The recessed metal channel on the out-

side of the box slides over the upright pole. See Figure 5.1.1.2B. The speaker is now ready for
real ear testing.

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