Telecommunications Industry Association
TR41.7.1-11-11-002
Document Cover Sheet
Project Number
Document Title
Comment Submitted on Draft UL 62368-1 as a Member of the STP
Source
Company, Agency, or Individual owning IPR, if any, of document contents
Contact
Stephen R Whitesell
2 Shannon Ct
Howell, NJ 07731-8919
Distribution
TR-41.7.1
Intended Purpose
of Document
(Select one)
X
Phone: 732 751 1079
Fax:
Email: swhitesell@ieee.org
For Incorporation Into TIA Publication
For Information
Other (describe) -
The document to which this cover statement is attached is submitted to a Formulating Group or
sub-element thereof of the Telecommunications Industry Association (TIA) in accordance with the
provisions of Sections 6.4.1–6.4.6 inclusive of the TIA Engineering Manual dated October 2009, all
of which provisions are hereby incorporated by reference.
Abstract
I would like to make TR-41.7.1 aware of a comment I submitted on the Draft UL 62368-1 Standard for
Audio/Video, Information and Communication Technology Equipment as a member of the UL Standards
Technical Panel on this subject. My comment accompanied an Approve vote on the draft.
The national deviations from the IEC 62368-1 document include test procedures for receive acoustic
limiting. They allow an alternative test procedure using an IEC 60318 coupler (Type 1 artificial ear) if
the handset will seal on the ear. The text in the draft is very explicit about not allowing the use of such a
coupler if any of the holes in the handset receiver fall outside the sealing diameter. However, the text is
less explicit about the case in which the physical contour of the handset causes trouble with sealing. My
comment addresses that subject.
v1.0 – 20050426
Telecommunications Industry Association
TR41.7.1-11-11-002
Comment
DVJ.4.2 and DVJ.5.2 provide alternative methods for acoustic limiting testing when the handset will seal
on an IEC 60318 artificial ear. The text for the alternative method using this artificial ear is explicit about
that simulator not being allowed if any of the receiver port holes fall outside its knife-edge. However, it
is not as emphatic about not using that simulator if the contour of the handset is such that it does not seal
properly. A corresponding disclaimer about that case should also be added. See proposed addition to text
in red.
Proposed Changes
DVJ.4.2 Method 2 (alternative method)
A handset or headset that is of a design compatible with the artificial ear of IEC 60318 shall be placed
under normal operating conditions in position for the exchange of calls (such as talking state with the
handset raised), and fixed to an artificial ear conforming to the requirements of IEC 60318. The earpiece
shall be naturally sealed to the knife-edge of the artificial ear. If any holes in the earpiece fall outside the
knife-edge of the artificial ear, or if the contour of the earpiece is such that it does not seal on the knifeedge, then the earpiece is not qualified for this Method 2 test. Other types of handset and headset should
use Method 1.
. . . . .
DVJ.5.2 Method 2 (alternative method)
A handset or headset that is of a design compatible with the artificial ear of IEC 60318 shall be placed
under normal operating conditions in position for the exchange of calls (such as talking state or ringing
state with the handset raised), and fixed to an artificial ear conforming to the requirements of IEC 60318.
The earpiece shall be naturally sealed to the knife-edge of the artificial ear. If any holes in the earpiece
fall outside the knife-edge of the artificial ear, or if the contour of the earpiece is such that it does not seal
on the knife-edge, then the earpiece is not qualified for this Method 2 test. Other types of handset and
headset should use Method 1.
. . . . .
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