3M MT13H223A, Manual

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· Reorient or relocate the receiving antenna.
· Increase the separation distance between the two interfering devices.
· Consult 3M™ Technical Service.
NO MODIFICATION: Modifications to this device shall not be made without the written consent of 3M Company.
Unauthorized modifications may void the warranty and the user’s authority to operate the device.
WARRANTY AND LIMITATION OF LIABILITY
Note: The following statements do not apply in Australia and New Zealand. Consumers should rely on their
statutory rights.
WARRANTY: In the event any 3M Personal Safety Division product is found to be defective in material,
workmanship, or not in conformity with any express warranty for a specific purpose, 3M’s only obligation and your
exclusive remedy shall be at 3M’s option, to repair, replace or refund the purchase price of such parts or products
upon timely notification of the issue by you and substantiation that the product has been stored, maintained and
used in accordance with 3M’s written instructions. EXCEPT WHERE PROHIBITED BY LAW, THIS WARRANTY IS
EXCLUSIVE AND IS IN LIEU OF ANY EXPRESS OR IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE OR OTHER WARRANTY OF QUALITY, OR THOSE ARISING FROM A
COURSE OF DEALING, CUSTOM OR USAGE OF TRADE, EXCEPT OF TITLE AND AGAINST PATENT
INFRINGEMENT. 3M has no obligation under this warranty with respect to any product that has failed due to
inadequate or improper storage, handling, or maintenance; failure to follow product instructions; or alteration or
damage to the product caused by accident, neglect, or misuse.
LIMITATION OF LIABILITY: EXCEPT WHERE PROHIBITED BY LAW, IN NO EVENT SHALL 3M BE LIABLE
FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL LOSS OR DAMAGES
(INCLUDING LOST PROFITS) ARISING FROM THIS PRODUCT, REGARDLESS OF THE LEGAL THEORY
ASSERTED. THE REMEDIES SET FORTH HEREIN ARE EXCLUSIVE.
NO MODIFICATION: Modifications to this device shall not be made without the written consent of the 3M Company.
Unauthorized modifications may void the warranty and the authority granted under Federal Communications
Commission rules permitting the operation of this device.
LABORATORY ATTENUATION
Explanation of attenuation tables:
European Standard EN 352
A:1 Frequency (Hz)
A:2 Mean attenuation, Mean att (dB)
A:3 Standard deviation, St dev (dB)
A:4 Assumed protection value, APV (dB)
A:5 H = Hearing protection estimation for high frequency sounds (ƒ
•
2000Hz).
M = Hearing protection estimation for medium frequency sounds (500Hz < ƒ < 2000Hz).
L = Hearing protection estimation for Low frequency sounds (ƒ
”
500Hz).
A:6 Criterion Level H = Criterion level for high-frequency noise
M = Criterion level for medium-frequency noise
L = Criterion level for low-frequency noise
USA Standard ANSI S3.19-1974
B:1 Frequency (Hz)
B:2 Mean Attenuation, Mean Att (dB)
B:3 Standard Deviation, St Dev (dB)
The level of noise entering a person's ear, when hearing protector is worn as directed, is closely approximated by
the difference between the A-weighted environmental noise level and the NRR.
Example
1. The environmental noise level as measured at the ear is 92 dBA.
2. The NRR is 19 decibels (dB).
3. The level of noise entering the ear is approximately equal to 79 dB(A).
CAUTION: For noise environments dominated by frequencies below 500 Hz the C-weighted environmental noise
level should be used.