MQ4WB1K5SPCMCIA Radio Card

 

802.11b Wireless Short PC Card

  



   
                                             
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American Telecommunications Certification Body Inc. 6731 Whittier Ave, McLean, VA 22101 September 2, 2002 RE: AboCom System, Inc. FCC ID: MQ4WB1K5S After a review of the submitted information, I have a few comments on the above referenced Application. 1) Please explain the intended end use for this device and how the antennas will be positioned for purposes of meeting RF exposure conditions. For example, the device is classified as portable, therefore please justify how the antennas will maintain the 2.5 cm distance specified in the users manual. 2) This device appears to be tested in a laptop, but it is uncertain how will the end user place the antenna's? It appears that this device may actually be intended for integration purposes. NOTE: If this device is intended for integration purposes only (i.e. access points, etc), it is best to treat this as a modular approval. This would require radiated testing on an extension card so that it is not installed inside the laptop. It would also require a cover letter addressing the modular requirements, different labeling information, and additional manual statements. As a reference, you may review FCC ID: O6M-WM302. Please note that this example was higher power and treated as a mobile product instead of portable as this device is specified as. 3) The users manual does not appear to contain the statements as required by 15.21. 4) FYI, Due to concerns with how to treat the device for RF exposure, as well as if the device was properly configured in a stand-alone configuration for radiated emissions, we have not yet reviewed the measurement report portion of this application. Please provide information regarding the above issues as soon as possible. Timothy R. Johnson Examining Engineer mailto: [email protected] The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information may result in application termination. Correspondence should be considered part of the permanent submission and may be viewed from the Internet after a Grant of Equipment Authorization is issued. Please do not respond to this correspondence using the email reply button. In order for your response to be processed expeditiously, you must submit your documents through the AmericanTCB.com website. Also, please note that partial responses increase processing time and should not be submitted. Any questions about the content of this correspondence should be directed to the sender.

American Telecommunications Certification Body Inc. 6731 Whittier Ave, McLean, VA 22101 September 22, 2002 RE: AboCom System, Inc. FCC ID: MQ4WB1K5S After a review of the submitted information, I have a few comments on the above referenced Application. 1) The revised users manual presents information for both end users and also for access point manufactures. There are different concerns for each of these uses (end-users vs. access point manufacturers) and will actually require 2 separate FCC ID numbers due to different RF exposure conditions, end use configurations, and modular approval access point applications. Please see the following concerns. a) End Users: It is not clear how an end user (a typical everyday user) is expected to use this device with 2 antennas on short cables coming from the EUT. This poses several RF exposure concerns. How is an end user be expected to position the antennas (for instance there is no mechanical device provided for holding the antennas) if they were to use a laptop computer while positioned in their lap? It is not certain how this may be marketed to an end user given the nature of external antennas. The FCC is very concerned with how a device is to be used, especially in portable applications. Specific information is required in order to evaluate RF exposure conditions such as typically uses, placement of antennas, power outputs, etc. Simple instructions to the user are not usually sufficient for this type of product. Please explain and provide further details. b) Access Point Manufacturers: If this is designed for integration by access point manufactures, then it must be approved in a modular fashion (otherwise the integrators MUST certify their entire device, including the transmitter). If AboCom System, Inc. desires a modular approval, then a cover letter addressing all the modular requirements must be submitted (please see 1 st attachment). Additionally, for radiated emissions, the device would have to be tested in a fashion out in the open (for instance on a PCMCIA extender card). The users manual should also be updated for various issues (see 2 nd attachment). Please note that access points are typically considered mobile devices with 20 cm spacing. 2) FYI, Due to concerns with how to treat the device for RF exposure, as well as if the device was properly configured in a stand-alone configuration for radiated emissions, we have not yet reviewed the measurement report portion of this application. Please provide information regarding the above issues as soon as possible. Timothy R. Johnson Examining Engineer mailto: [email protected] The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information may result in application termination. Correspondence should be considered part of the permanent submission and may be viewed from the Internet after a Grant of Equipment Authorization is issued. z Page 2September 22, 2002 Please do not respond to this correspondence using the email reply button. In order for your response to be processed expeditiously, you must submit your documents through the AmericanTCB.com website. Also, please note that partial responses increase processing time and should not be submitted. Any questions about the content of this correspondence should be directed to the sender.

American Telecommunications Certification Body Inc. 6731 Whittier Ave, McLean, VA 22101 October 2, 2002 RE: AboCom System, Inc. FCC ID: MQ4WB1K5S After a review of the submitted information, I have a few comments on the above referenced Application. 1) It is not clear if all the RF transmitting components are regulated from looking at the schematic. VCC1 and VCC3 are regulated, but other portions of the schematics are labeled with voltage values. Please provide a complete description how the device meet the power regulation requirements for modular approval. 2) Since this device is intended as a module and will be integrated by other manufacturers, the FCC logo is not required on the label since the device is not considered a PC peripheral device by itself. Please note that it is the integrators responsibility to retest any applicable digital device or PC peripheral device test requirements. Please correct the label. Additionally, please remove the DoC label from page 3 of the users manual. 3) The manual should provide further information and better detail as to a) how the OEM must use the module in order to maintain RF exposure compliance, b) information that they must supply in their manual, c) and that the modular transmitter approval is limited only to devices that can maintain the 20 cm distance between the antenna and body. In order to make sure that the integrators are given enough information, please see the provided separate attachment for suggested statements to be added to the users manual. Please provide a corrected users manual. 4) The test report states the EUT was connected to a Notebook (Section 2.2). This was not correct, please comment. 5) Please provide information regarding the RBW and VBW settings applied for AVG emissions > 1 GHz. Timothy R. Johnson Examining Engineer mailto: [email protected] The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information may result in application termination. Correspondence should be considered part of the permanent submission and may be viewed from the Internet after a Grant of Equipment Authorization is issued. Please do not respond to this correspondence using the email reply button. In order for your response to be processed expeditiously, you must submit your documents through the AmericanTCB.com website. Also, please note that partial responses increase processing time and should not be submitted. Any questions about the content of this correspondence should be directed to the sender.

Dear Timothy, Because our client, AboCom Systems, Inc., decided to apply for Module approval, we remeasured the test as per FCC P15 standard recorded in the report. But I have one question need your opinion. Because this project (applied for end-user) has submitted to your review before, it changes to apply for Modular approval now. Should I send all the documents to you for reviewing or it would be ok if I just send the relative documents to you? Even though I'm awaiting your comments, I still send all the documents to you for reviewing which deems to a new project. And I hope that won't be too confused for you too much. Because our client is very urgent to know the status, if you have any comments after reviewing, please contact us as soon as possible. Thank you very much for your kindly help. Since the documents will be larger than our mail limit for sending out, thus I'll send the TCF by two separate mails. If you have further questions, please feel free to contact me. Best regards, Julia Chu report7.pdf power spectrum density plot.pdf band edge plot.pdf List.pdf Mudular Approval Letter.pdf To: "Timothy R. Johnson" <[email protected]> Subject: Re: FCC ID: MQ4WB1K5S (mail-1) Page 1 of 2In 10/1/2002Printed for "Timothy R. Johnson" <[email protected]> confidential letter1.pdf Block Diagram.pdf RF antenna conducted emission plot.pdf Technical Spec.pdf RF safety evaluation3.pdf 7313.pdf label5.pdf Schematic2.pdf letter of agency.pdf Spurious test set-up photo.pdf Power Line Conducted emission plot.pdf Conducted test set -up photo.pdf Mimimum 6dB bandwidth plot.pdf Page 2 of 2In 10/1/2002Printed for "Timothy R. Johnson" <[email protected]>

Dear Timothy, As per your review comments for FCC ID: MQ4WB1K5S, please see the explanation as below: 1) Please find the revised diagram attached which provided by our client as per your requirement. 2) Please find the revised manual and revised label attached for your review. 3) Please also find the revised manual attached for your reference. 4) We modified the report regarding to your requirement. Please find the revised report attached. 5) For the statement for RBW and VBW setting, please refer to the section 2.1 of report. I hope the supplements satisfy all your requirement for reviewing this application. If you have further question, please feel free to contact me. Thank you very much for your kindly help on this project. Best Regards, Julia Chu ----- Original Message ----- From: "Timothy R. Johnson" <[email protected]> To: <[email protected]> Cc: <[email protected]> Sent: Wednesday, October 02, 2002 12:25 PM Subject: Preliminary Review of AboCom System, Inc., FCC ID: MQ4WB1K5S Michael, Attached are comments regarding review of this application. Thank You, Timothy R. Johnson, NARTE Certified EMC Engineer (No. EMC-002205-NE) Examining Engineer To: "Timothy R. Johnson" <[email protected]> Subject: Re: FCC ID: MQ4WB1K5S Page 1 of 2In 10/9/2002Printed for "Timothy R. Johnson" <[email protected]> American TCB, Inc. 6731 Whittier Ave. McLean, VA 22101 email: [email protected] alternate email: [email protected] direct number: 404-414-8071 corporate phone: 703-847-4700 corporate fax: 703-847-6888 revised -report.pdf revised -Installation guide.pdf revised -label.pdf revise-block diagram.pdf Page 2 of 2In 10/9/2002Printed for "Timothy R. Johnson" <[email protected]>



  










  










  






  



 





  


 
 




   



























Technical Description Media Access Controller (MAC) with Baseband Processor Unit (U9) U9 is a single-chip wireless LAN integrated controller that provides all processing and functionality needed for the MAC protocol of wireless LAN. It has on-board A/D and D/A for analog I and Q inputs and outputs, for which the U10 is recommended. Firmware, which stored by Flash (U16), implements the Wireless LAN MAC protocol and some configurations parameters for the PC Card. I/Q Modulator/Demodulator and Synthesizer (U10) It features all the necessary blocks for quadrature modulation and demodulation of “I” and “Q” baseband signals. The receive and transmit IF paths can share a common differential matching network. 2.4GHz RF/IF Converter and Synthesizer (U11) The receive chain features a low noise, gain selectable amplifier followed by a down-converter mixer. It’s input from Antenna connector (RF signal). Output IF signal to U10. An up-converter mixer and a high performance preamplifier compose the transmit chain. The remaining circuitry comprises a high frequency Phase Locked Loop synthesizer with a three wire programmable interface for local oscillator applications. It receive IF signals from U10, then up to 2.4GHz (RF signal) output to U3 by up-converter with LO. 2.4GHz Power Amplifier and Detector (U3) It is input from U11, and output to antenna connector.

      













 



























































 



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