Interacoustics AC40 - Back Panel External Connections - Standard Accessories

AC40 Instructions for Use - US Page 10
3.1 Back Panel External Connections – Standard Accessories
The back panel contains all the rest of the main connectors (sockets):
Special notes:
• The HLS (hearing loss simulator) connector is currently not used. Use the Standard Headphone
and HF Headphone connectors for HLS. This is prepared for future use.
• In addition to the standard DD45 headset, four other air conduction transducers may be used
(they all connect to specific outputs on the AC40):
• HDA300: High Frequency requires a HF headset.
• CIR33 for insert masking: Insert phone CIR33 for insert masking has a limited sound
quality, making it only adequate for masking noise presentation.
• EAR-Tone 3A or 5A general purpose insert phone: Insert headphone EAR-Tone 3A or
5A are high quality transducers that may be used instead of the DD45/TDH39. It
improves cross hearing from the normal approximately 40dB of the TDH39 to
approximately 70dB. Masking as well as avoiding over-masking is thus easier with this
type of headphone.
• IP30 insert phone is the standard insert phone with same properties as EAR-Tone 3A
• Currently FF3/FF4 (both the powered and non-powered) is not used. This is prepared for future
use.
• Assistant Monitor: There is always a direct connection through the goose neck microphone to the
assistant wearing a headset connected to the “Assistant Monitor” output.
• The LAN connection is currently not used for any application (only internally in production).
• Mic 2: Please refer to the section about Patient Communication (Talk Forward and Talk Back).
• When using the HDMI output the output resolution will be the saved as on the build in 8,4 inch
display: 800x600.
• CD-input: It is required that any attached CD-player has a linear frequency response in order to
comply with the requirements of IEC 60645-2.
• USB connections is used for:
• PC connection to Diagnostic Suite (the large USB connector)
• Direct print
• PC-keyboard (for entering client names)
Power
connector
LAN (for
future use)
USB connectors
for printer, PC-
connection &
keyboard
HDMI output
for external
monitor (e.g.
for patient
counceling)
Free Field 1
and 2
(external
amplificatio
Standard
Headphones
DD45/TDH3
9/HDA300
Bone conductor
B81 /B81
1 / 2
Insert
masking
Patient
Response
Switch 1 / 2
Extra Talk
forward
mic., e.g.
for table
External
CD / MP3
input
For
Talk
Back
High Freq.
Left / Right
Amplified
Free Field
outputs
(2x20
watt) –
only
Control
output
Assistant
Monitor
Standard
Insert Phone
EarTone 3A /
IP30