12 FONIX FP40 Portable Hearing Aid Analyzer
1.5.4 Front Panel Knobs
Amplitude Controls the amplitude or loudness of the test signal. Is also used to move the
cursor up and down in making menu selections.
Frequency Controls the frequency of the test signal in pure-tone mode. Is also used to
move the cursor left and right when making menu selections. In the real-ear
target screen, it selects the amplitude in the audiogram tables.
Contrast Control Controls the contrast of LCD display. If no display appears, check this control
first.
EXTERNAL
POWER
ON
OFF
HEADPHONES
EXTERNAL
SPEAKER
VIDEO MONIT
OR
SERIAL
INTERFACE
CAUTION
ELECTRICAL SHOCK HAZARD.
DO NOT REMOVE INSTRUMENT COVER.
REFER SERVICE TO QUALIFIED PERSONNEL.
0086
Figure 1.5.5—Rear Panel
1.5.5 Rear Panel Controls
External Speaker A miniature phone jack that allows an external sound field speaker or sound
box (FONIX 6040) to be connected to the speaker drive from the FP40.
Headphones A standard 1/4 inch phone jack and volume control that allows the monitoring
of the sound reaching the probe microphone.
Serial Interface Nine pin D jack for RS232 connection and laser printer connection.
CE Mark This symbol indicates that Frye Eelctronics conforms to the Medical Device
Directive 93/42/EEC. If an external monitor or printer is used, it should also
have a CE mark in order for the FP40 to remain compliant.
Video Monitor Units with serial numbers 940000 and above have VGA connectors. Older units
have RCA jacks for composite
monitors.
External Power Main power input switch. (On the portable version, operate button on front
panel must also be pushed to activate the instrument.)
