Litelink ACC-1003 User manual

WARRANTY
All fiber optic transmission systems, products and accessories
manufactured by Liteway, Inc. and it’s subsidiaries are fully tested
prior to shipment and are warranted against defective materials
and workmanship for a period of five full years from the date of the
original shipment. Should a problem occur, a Return Material
Authorization Number (RMA) must be obtained from Liteway Inc.
at [phone] and the item returned to Liteway, Inc. 166
Haverford Road, Hicksville, NY 11801, USA, prepaid. Liteway Inc.
will then, at its option repair or replace the defective item.
Liteway, Inc. maximum liability under this warranty is limited to the
cost of the defective item only. No contingent liabilities of any kind
are either assumed or implied.
Any items returned to Liteway, Inc. that have been misused,
abused, damaged, modified, connected or adjusted in any way
contrary to the instructions furnished by Liteway, Inc. or repaired
by unauthorized personnel will not be covered by this warranty.
Any non-warranty repairs required will be quoted at the current
rate for such services.
Important Notices
CAUTION ! AVOID DIRECT EXPOSURE TO BEAM.
All -7,-8, and -9 Models use laser diodes. These solid-state laser
diodes are located in the optical ports of these units. Laser diodes
produce invisible radiation that may be harmful to human eyes.
Never look directly into the optical port of any fiber optic unit
designed to operate with single-mode optical fiber.
NOT FOR LIFE SUPPORT SYSTEMS
Liteway, Inc. does not authorize or warrant any of its products or
accessories for use in critical life support systems or applications
of any kind.
© Copyright 2017 Liteway, Inc. 110770 Rev D
OPERATING INSTRUCTIONS
Litelink®Noise Canceling Headset
Model ACC-1003
The ACC-1003 is a noise canceling headset with a 5 ft. cord and
3.5mm mini plug.
Technical Specifications
Speaker Impedance 8 ohms
Speaker Output Level 109 dB @ 1mW
Speaker Power Input Maximum 500mW Continuous
Microphone impedance 2000 ohms nominal
Microphone Normal voltage 1.5 VDC
All specifications are subject to change without prior notice.
!

Operating Instructions
Description
The ACC-1003 uses acoustic noise canceling which was developed
to allow clear radio communications, in extremely high ambient noise
environments. Noise canceling is accomplished by allowing the rear
of the microphone diaphragm, as well as the front, to be exposed to
the ambient noise field. Since the front and rear sound waves differ in
phase from each other by 180 degrees, a highly effective cancellation
results. The ambient sound is substantially prevented from being
converted to an electrical analog, thereby nearly eliminating it from
the microphone output signal.
The flexible boom may be bent anywhere along its length, in any
direction. The "mechanical memory" provided by the spring-loaded
feature allows the boom to maintain its adjustment, even when
accidentally bumped of pushed.
Although the ACC-1003 boom microphone headset weighs only 11
ounces, the large, plush, foam-filled ear pads reduce background
noise substantially, allowing the operator to hear received signals
clearly, even in very noisy environments. The matching padded
headband increases comfort on the top of the head and imparts a
luxurious appearance to the unit.
Adjusting the flexible boom:
The flexible boom is spring-loaded, so that once you have set the
adjustment, it will tend to be maintained, even though it may be
bumped or pushed, accidentally. This means you must overcome the
spring force by bending the boom farther than the position you want.
That way, when it springs back somewhat, it will be set correctly.
110770 Rev D
CAUTION: It is nearly impossible to adjust the microphone close to
the mouth without first removing the headset from the head. With the
headset removed from the head, bend the boom very drastically, so
that when it springs back, the microphone will be too close (actually
leaning on the face). Then, complete the adjustment while wearing
the headset by pulling the microphone away, just slightly. The Model
ACC-1003s noise canceling microphone is designed for very close
talking! It should be adjusted to the corner of the mouth, only about
an eighth-inch (or less!) away. Talk into the side with the circular cut-
out. The rear of the microphone which is completely covered with
acoustically transparent plastic foam must remain unblocked to
provide the noise-canceling feature). It is generally best to talk across
the microphone, rather than directly into it. This practice will help to
direct breath “blasts” away from the sensitive diaphragm, and avoid
overload of the microphone element, which could cause distortion.
The microphone boom length may be adjusted by pushing or pulling it
in and out of the ear cup.
Speaker Connections
Pin Function
Tip Microphone
Ring Speakers
Sleeve Common