ATP Exam Study Guide with Complete
Solutions (New Update)
what is the range of pure tone audiometry? - ✔️✔️Ranges from 0.125 to 8 kHz
What is an EADL? - ✔️✔️electronic aids to daily living
What is the best mode of transmission of an EADL that controls a distant device such as a
garage door opener? - ✔️✔️Radio Frequency Transmission
what is radio frequency transmission? - ✔️✔️serves as a line between the EADL and
appliances
What are the advantages and disadvantages of radio frequency transmission? - ✔️✔️Adv:
designed to transmit throughout a house and yard and are not blocked by common household
materials.
Disadv: interference and lack of privacy
what is house wiring? - ✔️✔️digital control signals are sent from the EADL through house
wires and to the individual appliances.
what are the advantages and disadvantages of house wiring? - ✔️✔️Adv: no installation cost
for additional wiring.
Disadv:not portable, and sometimes systems on the same electrical power systems interfere
with each other.
what is ultrasonic transmission? - ✔️✔️sound waves of about 40,000 hz, which are too high
for the human ear to hear that transmits signals from a receiver to a transmitter.
what are the advantages and disadvantages of ultrasonic transmission? - ✔️✔️Adv: highly
portable
Disadv: transmitter and receiver must be in the same room and there must be no obstacle
blocking the signal.
what is infared transmission? - ✔️✔️commonly used to control home electronics such as TV
and music players. Also used to link EADLs and appliances.
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