Response to FCC queries

FCC ID: H9PMC9002B

Cover Letter(s)

Download: PDF
FCCID_458515

              Audit Responses to FCC correspondence related to Symbol MC9000 family


Introduction

The following response is a composite response to issues raised in the following Correspondence letters.

The rationale is that many of the issues raised against one (or several) grants are equally of concern to
others. Accordingly it is considered appropriate to address the totality of concern rather than focus on
individual letters and miss the opportunity to clarify other issues, which though valid have not been
highlighted for that particular grant.

The following addresses issues raised in the following correspondence:

    FCC id               Pt 24: GSM                    DTS— 802.11                  DSS — Blue
                  TC no.        Corr no         TC no.       Corr no         TC no.       Corr no
HIOPMCI062A       TC790916      12997           TC9I96953     13002          TC173701     None
HOPMCI062C        TC144388      13004           TC691915     None            N/A          N/A
H9PMCI002A        TC797792      12646           N/A          N/A             TC995842     12644
H9PMCIOO2C        TC260643      12801           N/A          N/A             N/A          N/A
HOPMCIO062B       TC270723      13025           TC395364      13026          TC750077     13027
HI9PMCI062D       TC276727      12492           TC502219      12490          N/A          N/A
HOPMCI002B        TC156050      12700           N/A          N/A             TC619324     12702
HOPMCIOO2D        TC538435      12803           N/A          N/A             N/A          N/A

HIPMCI9060B       N/A           N/A             TC283234      None           TCS58§4062     12973
(original/
HOPMCI060B        N/A           N/A             TC195241      12974          TC239174       None
(tch pc2)/



Family Relationships

                                          Family Building Blocks

The MC9000 family of products are all related. They use the same basic main board but vary in the radio
modules included.

There are 5 Radio modules used within the product Family:
        Siemens MC46 (GSM 850 and 1900);
        Siemens MC4S (GSM 1900 only);
        Symbol 802.11 module;
         Symbol Bluetooth module;
         CDMA module.

There are also three variations in the housing as follows:
       Short" housing with the 28 button keypad
       "Brick" housing with the 53 button keypad which is longer and includes an extended length
       battery
       "Gun" Housing with a handle grip.




Page 1 of 7                                                                10/08/2004


              Audit Responses to FCC correspondence related to Symbol MC9000 family
                                                 BABT TCB

BABT as a TCB have not progressed any applications from this family of products, which include the
CDMA module. However, we understand that submissions have been progressed for CDMA based
family units through another TCB.

BABT have only been involved with the product family members listed below:


                      Products making use of the Quad band GSM transmitter
The MC9062A uses the "Short" housing with the 28 button keypad and includes the
   e   MC46 GSM Module,
   e   802.11 module,
   e   Bluetooth module.
The MC9062C is the same as the MC9062A except that the Bluetooth module is omitted.
The MC9002A is the same as the MC9062A except that the 802.11 module is omitted.
The MC9002C is the same as the MC9062A except that it contains only the MC46 GSM Module
                    Products making use of the Tri—band GSM transmitter
The MC9062B uses the "Brick" housing with the 53 button keypad and includes the
   e   MC4S5 GSM Module,
   e   802.11 module, a
   *   Bluetooth module.
The MC9062D is the same as the MC9062B except that the Bluetooth module is omitted.
The MC9002B is the same as the MC9062B except that the 802.11 module is omitted.
The MC9002D is the same as the MC9062B except that it contains only the MC4S5 GSM Module
                                    Products without a GSM transmitter
The MC9062B was originally approved using the "Short" housing and include the
        e 802.11
        e Bluetooth Modules.
A subsequent Class 2 Permissive Change added the "Brick" housing with additional keys and an
alternate battery as an alternative

The RLAN 802.11 module was approved by BABT under the FCC ID H9P2164436 as a radio module.
3 subsequent class 2 Permissive changes involved the addition of the following "Hosts" to the grant
     e Short Housing
     e Brick Housing
     e Gun Housing
 (Information related to the Grantfor the RLAN module is includedfor completeness but is not the
subject ofany ofthe correspondence finding)

The Bluetooth module was approved by another party under the FCC ID H9P2164381 as a radio
module.
A subsequent class 2 Permissive change was progressed by BABT and involved the addition of the
following "Hosts" to the grant
    e Short Housing
(Information related to the Grant for the Bluetooth module is included for completeness but is not the
subject of any of the correspondence finding).



Page 2 of 7                                                                10/08/2004


              Audit Responses to FCC correspondence related to Symbol MC9000 family
                                     Product Family Accessories
The product has the following declared accessories:

    e   A holster which is common to all the family
    e   A headset which is common to all the family




Test and Approval Strategy


                                              Testing
Products includinga GSM Module
For testing product which included a GSM module the client supplied the fully configured
MC9062A and MC9062B variants. Both were initially capable of co—transmission. Symbol
implemented a software change, which inhibited this capability.

All testing was conducted using these fully configured samples as the client declared there would be no
significant differences (related to the included radios) in the sub—equipped versions.

There was a meeting between Symbol and the FCC where Symbol justified the use of the "Fully
equipped" test data in support of the sub—equipped grants. While the FCC were uncomfortable
they agreed in this instance but stated in future "Worst case" testing should be undertaken on the
de—configured versions

MC9060B
This was tested separately from the other family members, in both the "Short" and "Brick" housings

                                         EMC Test Photo
In the EMC report the Headset is shown mounted on a head phantom.

This is for display purposes only and not an SAR phantom; it does not contain any liquid.

                                           Approval Strategy
Products including a GSM Module

Symbol (via their Agent) submitted separate approvals submissions for each variant using the test data
obtained using the fully configured versions; additionally many of the supporting letters covered more
than one particular product.
In some of the data results related to the initial "Co—transmission" capability were still present.

It had been agreed between BABT and Symbol that the TCB would progress the initial grants with co—
transmission inhibited and that subsequent Class 2 Permissive changes would be made to the FCC to lift
this inhibition.
Exhibit 13 (Covering letters) entitled "Co—existence Statement" declares the inhibition.
[Note since this letter covers the whole product family it includes references to CDMA, as stated earlier
None of the Products covered by grants referenced above includes a CDMA transmitter.

This note confirms that the Grants made by BABT covered products where the client had
declared they were unable to co—transmit.




Page 3 of 7                                                                  10/08/2004


              Audit Responses to FCC correspondence related to Symbol MC9000 family
SAR Issues

                                         Co—Transmission Results
As stated earlier the client declared during test that a software inhibition to co—transmission would be
included in the initial product. The uploaded SAR reports included such data.
The SAR report will be amended to include only results related to single transmission cases.
                                                   Headset
The headset is connect via a wire and does not have a transmitter
It is noted that TUV test practice was to conduct Head SAR tests with a headset in place. It is recognised
these test results are not required
The test results related to the Headset placed on the Head phantom will be deleted from the SAR
Reports

The Body testing was conducted with the Headset connected.
                                                  Holster
The PCT transmitters were tested in the holster initially with the device in the "intended " orientation.
However the worst—case frequency was used to test with the device 180 degrees turned facing the
opposite direction. Initially this data was "For advice" only.

After discussion between Symbol, the FCC, and both interested TCB‘s Symbol have agreed that the
Worst case is the "incorrect" orientation; these results will be used for the SAR levels.

The DTS and DSS transmitters were tested at 1 cm separation and outside the holster. This was
based upon the declared separation distance in the User Manual since no "orientation could be
guaranteed in third party holsters the orientation with the active Antenna nearest the phantom
was used.

The separation distance for the holster was much greater. Accordingly it was viewed that the 1 cm
distance was the worst case.

Since we cannot use different minimum distance criteria for co—located transmitters where the
transmitter position is not visible the 4 cm separation distance will be used for the DTS and DSS
grants.

Symbol wished that other holsters be permitted for use. It was determined that the existing holster
provides for a 4 cm separation. In the absence of any "Out of Holster" data for the PCT Symbol have
agreed to a 4 cm distance stipulation. The Symbol supplied holster contains metal parts and the primary
SAR testing took place using the Holster.

The User manual will be updated to provide advice on device orientation; holster positioning; and
the minimum distance to be used for 3"" party holsters

This is not significant as the primary SAR testingtook place using the Holster.




Page 4 of 7                                                                   10/08/2004


              Audit Responses to FCC correspondence related to Symbol MC9000 family
                                          The Use of Phantom

Although the device is almost as large as the flat phantom it was assessed against, the phantom size was
sufficient to cover the whole area of the device tested and the device‘s active area was measured to be
significantly smaller due to the nature of the frequencies being employed in the transmitter modules.

The device was positioned so that the central location of the maximum RF energy location was centrally
positioned against the 2mm side of the flat phantom. The actual RF distribution, recorded during the
SAR scan showed that there was no potential secondary peak and that there were no significant
boundary effects caused by the phantom size.

It is believed that the process described above adequately covers the requirements for assessing localised
SAR distributions on large devices.

Please refer to a previously provided paper ‘Flat Phantom Set—up for the performance Check and System
Validation of measurement systems according to IEEE15S28 and IEC62209 — Andreas Christ and Niels
Kuster May 13, 2002‘ which suggests that the size of phantom used is quite adequate for the transmit
frequency of the device under test since our procedure additionally checked that the SAR field
distribution was well—contained within the volume of the phantom.

                                         SAR Evaluation Notes

The SAR evaluation Notes will be updated as appropriate to the above changes/clarifications




Page 5 of 7                                                                 10/08/2004


              Audit Responses to FCC correspondence related to Symbol MC9000 family
Grant Issues


                                              PCT Grants
The following aspects will be clarified/amended on the GSM grants
       Amend SAR value to represent SAR value for "incorrect/worst case" orientation
       Add reference to listed holster
       Add reference to 4 cm separation
       Check/clarify co—location statement in Grant
       Add statement that Grant only relates to 1900 (and as applicable 950) MHz "i.e. not EU bands"

                                        802.11 transmitter grants
The following aspects will be clarified/amended on the 802.11 transmitter grants
       Amend EAC from DSS to be DTS
       Clarify Frequency bands (to match modular approvals)
       Revise Power to be "Conducted power"
       Add Radiated Power as a grant note
        Add reference to listed holster
       Add reference to 4 cm separation
       Check/clarify co—location statement in Grant
       Add "CC" note where Bluetooth also present

                                  Bluetooth (DSS) transmitter grants
The following aspects will be clarified/amended on the Bluetooth transmitter grants
       Clarify Frequency bands (to match modular approvals)
       Revise Power to be "Conducted power"
       Add Radiated Power as a grant note
       Add reference to listed holster
       Add reference to 4 cm separation
       Check/clarify co—location statement in Grant
       Add "CC" note where Bluetooth also present




Page 6 of 7                                                               10/08/2004


              Audit Responses to FCC correspondence related to Symbol MC9000 family

Changed Exhibits

                                           Changed Exhibits
The following exhibits will be uploaded or superseded

   e   Exhibit 8 (User Manual): A new version (Regulatory Guide) has been uploaded (as non—
       confidential).
   e   Exhibit 9 (Internal Photos) : For all sub—equipped variants additional exhibits have been
       uploaded
   *   Exhibit 11 (SAR Report) : The existing report will be superseded; An updated version with
       appropriate changes from above responses has been uploaded
   *   Exhibit 11 (SAR Assessment): The existing SAR evaluation letters will be superseded; New
       versions based upon the updated SAR reports have been uploaded
   *   Exhibit 12 (Antenna Placement) For all sub—equipped variants Additional photograph
       exhibits have been uploaded
   e   Exhibit 13: (Cover Letters) A new "Family Tree" description has been uploaded to define
       the product interrelationships
   e   Exhibit 13:; (Cover Letters): The exhibit entitled "Sub—equipped Models letter" has been
       superseded

                                         Special Changes

In H9PMCI002C TC260643 Exhibit 6 (Test Report). MC45 Report has been superseded




Page 7 of 7                                                          10/08/2004



Document Created: 2019-11-10 23:30:40
Document Modified: 2019-11-10 23:30:40

© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC