Telecommunications Industry Association
TR41.3.9-08-05-004-L
Document Cover Sheet
Project Number
SP-3-0219-AD1
Document Title
Comments to above draft 02
Source
Panasonic Corporation of North America
Contact
Tony Jasionowski
One Panasonic Way, 1E-6
Secaucus, New Jersey 07094
Phone: 201-348-7777
Fax: 201-348-7807
Email:
[email protected]
Distribution
Intended Purpose
of Document
(Select one)
TR-41.3.9
X
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 March 2005, all of
which provisions are hereby incorporated by reference.
Abstract
Comments to draft 02 of SP-3-0219-AD1
v1.0 - 20050426
1 of 4
Comments to Draft 02 of SP-3-0219-AD1 TIA-1083-1
Apr.18, 2008/Panasonic
 Clause 3.2.3: (perpendicular)
clause 3.2.3, 1 b) refer to TIA-810-B subclause 4.4 through 4.8 for artificial ear.
subclause 4.7 of TIA-810-B: the preferred ear simulator is type 3.3.
Panasonic’s Comment:
<1> We would like to comment that clause 3.2.3, 1 b) is revised as follows.
1 b) place the handset receiver on the artificial ear using the high leak condition specified in
TIA-810-B subclauses 4.4, 4.7 and 4.8, except the preferred ear simulator is either type 1 or type 3.3
artificial ear.
The reason is as follows:
We would like to propose to add “type 1” artificial ear (ear simulator), as optional:
This is better because of following reasons:
1) Type 1 artificial ear is used for FCC Part 68 measurement, so it is common and popular usage
2) Type 1 artificial ear , we understand, has good reproducible fashion. Using type 1 artificial ear
will get better contact to receiver.
3) The purpose of using artificial ear is to just determine the input level. So, we think several
types artificial ears will be acceptable as preference.
2
(continued)
2 of 4
 Clause 3.2.3, 1 c):
Panasonic’s Comment (item to be confirmed)?:
<2> We would like to confirm that our understanding is correct on followings.
3.2.3, 1 c) Determine the volume control setting for nominal gain per TIA-810-B subclause 4.6
* 1)
except use the high leak position.
* 2)
Please confirm?:
* 1) Nominal gain: We understand this is the “quietest volume control setting” as described on clause 4.5
of TIA-810-B. From a practical viewpoint, please confirm that the following procedure is accepted
with TIA-1083-1 as we understand so:
A) Set the input level with minimum volume level of sound pressure of the unit under test
B) Keep the input level set as A) (and not changed) while measuring
and, conduct measurement with changing the volume set positions.
(this means that input level is NOT re-corrected even when the volume setting is changed)
* 2)Except use the high leak position:
We understand the meaning of this is that, in from a practical viewpoint, we set the artificial ear
with the high leak position. Please confirm it is correct.
(4.6 of TIA-810-B describes “with the mandatory low leak RLR requirement---.
The “except” in 3.2.3 1 c) means it accepts to set it with high leak position as it is also described
on 3.2.3 1 b).
-----this is just to confirm the interpretation of “except”?
3
3 of 4
(continued)
Clause 3.2.3, 1 d):
Panasonic’s Comment:
<3> We would like to comment that Clause 3.2.3, 1 d) is revised as follows:
1 d) Apply a 1000Hz input signal and determine the sound pressure produced in the artificial
ear. Adjust the input level to produce, (a) 0 dBPa at 1000Hz for type 3.3 artificial ear, and
(b) 5 dBPa at 1000Hz for type 1 artificial ear.
Use the input level thus determined for the below magnetic field measurement.
The reason is as follows.
We requested to use either “Type 1 or Type 3.3 artificial ear” as described on comments <1>.
Due to difference between Type 1 and Type 3.3, it is necessary to adjust the input level to produce
5 dBPa at 1000Hz for Type 1 artificial ear.
 Clause 3.3.3:(Transverse)
Panasonic’s Comment:
The same comments <1>, <2> and <3> we described for clause 3.2.3 are also applied
to clause 3.3.3.
END
Note: Next page shows copy of TIA-810-B Clause 4.4,4.7,4.8
4
4 of 4
5