Mediatek MT7921 (WiFi6) BLE Combo Card User Guide
- June 5, 2024
- Mediatek
Table of Contents
Mediatek MT7921 (WiFi6) BLE Combo Card
Document Revision History
Version | Date | Author | Change List |
---|---|---|---|
V0.1 | 20200217 | Jane | Initial draft release. |
V0.2 | 20200227 | Jian-Lun | 2nd draft release. |
Added 2.3.9~2.3.17
V0.3| 20200724| TW| Add section 2.5 for dual-band dual concurrent (DBDC)
operation
System Overview
General Description
MT7921 chip is highly integrated single chip which have built in 2×2 dual-band wireless LAN and Bluetooth combo radio. It can be configured in test-mode for performance validation, production testing and regulatory certification. There are two software tools, QA-Tool and Combo-Tool responsible for evaluating WIFI and Bluetooth signal and performance testing. This document is introducing how to install and use QA-Tool.
QA-Tool
Users have to install 3 major software before using QA-Tool.
- WinPcap
- Windows7 X64 security package
- QA-Tool Windows driver
MTK strongly recommends install QA-Tool on Windows 7-64bit operating system.
How to install QA-tool
Please follow the procedure listed in below to install QA-Tool
- 1st: Install WinPcap
- 2nd: Update Windows7 security package to register x64 signature mechanism
- 3rd: Install QA-Tool Windows driver.
Install WinPcap
If users are the 1st time operating this tool, users should install WinpCap
at first. Please follow below link and steps to install this software.
https://www.winpcap.org/install/
WinPcap version: 4.1.2 or later.
Windows 7 Security for new x64 signature mechanism
If you are the 1st time to use this tool, you should update Windows
Security for new X64 signature mechanism at first. Please follow below link to
install this software.
https://www.microsoft.com/en-us/download/details.aspx?id=46148
Windows 10 install note
If users can’t install the driver in Windows 10 due to driver integrity
check. Try to disable the integrity check to allow installation.
- Disable Driver Integrity Check
- Open cud as Administrator.
- Execute ‘credit /set no integrity checks on’
- Reboot
- Then install again. If still fail, try do ‘Disable Secure Boot’ below.
NOTE: Reenable the driver integrity check by executing ‘credit /set no integrity checks off’ and then rebooting.
- Disable Secure Boot
Please refer to:
https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop
/disabling-secure-boot
QA-Tool Windows driver
MT7921 supports USB, SDIO and PCIE interface. According to interface type
of MT7921 on users’ hand, please refer to steps shown below to install QA-Tool
Windows driver:
USB interface:
-
Connect DUT to PC/NB and check Windows Device Manager.
-
Window Device Manager would discover DUT shows “Generic Bluetooth Adapter” (BT device) and “ WiFi_If “(Wi-Fi device).
-
Right click the “ Generic Bluetooth Adapter ” BT device and select disable as follows:
-
Right-click on “ WiFi_If ” Wi-Fi device and Update Driver Software.
-
According user’s Windows’ OS to select and install test tool driver.
SDIO interface:
- Connect DUT to PC/NB and check Windows Device Manager.
- Window Device Manager would discover DUT shows two “Generic SDIO Device”. User should check DUT VID and PID from “Hardware Ids” of Device Manager to know Wi-Fi and BT device. Please refer to following figure and table to identify WIFI and BT devices:
Hardware Ids| Feature
---|---
SD\VID_037a&PID_7961&FN_1| MT7961S-WiFi
SD\VID_037a&PID_7961&FN_2| MT7961S-BT
-
Right click the “7961 Combo” BT device (SD\VID_037a&PID_7961&FN_2) and select disable as follows.
-
Right-click on “7961 Combo” Wifi device (SD\VID_037a&PID_7961&FN_1) and Update Driver Software.
-
According user’s Windows’ OS to select and install test tool driver.
MT7921 support only below dual-band dual-concurrent (DBDC) mode operation:
- (Tab TX/RX) TX0/RX0 transceiver is operating in 5GHz (A-band)
- (Tab TX/RX Band 1) TX1/RX1 transceiver is operation in 2.4GHz (G-band)
Federal Communication Commission Interference Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
- This device may not cause harmful interference, and
- This device must accept any interference received, including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
FCC Caution: Any changes or modifications not expressly approved by the
party responsible for compliance could void the user’s authority to operate
this equipment.
This transmitter must not be co-located or operating in conjunction with any
other antenna or transmitter.
This device meets all the other requirements specified in Part 15E, Section
15.407 of the FCC Rules.
Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment. This equipment should be installed and operated with
minimum distance 20cm between the radiator & your body. For specific portable
application, please follow grant condition(s).
The product comply with the FCC portable RF exposure limit set forth for an uncontrolled environment and are safe for intended operation as described in this manual. The further RF exposure reduction can be achieved if the product can be kept as far as possible from the user body or set the device to lower output power if such function is available.
This module is intended for OEM integrators only. Per FCC KDB 996369 D03 OEM
Manual v01 guidance, the following conditions must be strictly followed when
using this certified module:
KDB 996369 D03 OEM Manual v01 rule sections:
List of applicable FCC rules
This module has been tested for compliance to FCC Part 1
Summarize the specific operational use conditions
The module is tested for standalone mobile and portable RF exposure use
condition. Any other usage conditions such as co-location with other
transmitter(s) will need a separate reassessment through a class II permissive
change application or new certification.
RF exposure considerations
This equipment complies with FCC mobile radiation exposure limits set forth
for an uncontrolled environment. This equipment should be installed and
operated with a minimum distance of 20cm between the radiator & your body. A
separate SAR evaluation is required to confirm compliance with relevant FCC
portable RF exposure rules.
Antennas
The following antennas have been certified for use with this module;
antennas of the same type with equal or lower gain may also be used with this
module.
Label and compliance information
The final end product must be labeled in a visible area with the following:
“Contains FCC ID: RAS-MT7921”. The grantee’s FCC ID can be used only when all
FCC compliance requirements are met.
Information on test modes and additional testing requirements
This transmitter is tested in a standalone mobile and portable RF exposure
condition and any co-located or simultaneous transmission with other
transmitter(s) class II permissive change re-evaluation or new certification.
Additional testing, Part 15 Subpart B disclaimer
This transmitter module is tested as a subsystem and its certification does
not cover the FCC Part 15 Subpart B (unintentional radiator) rule requirement
applicable to the final host. The final host will still need to be reassessed
for compliance to this portion of rule requirements if applicable.
As long as all conditions above are met, further transmitter test will not be
required. However, the OEM integrator is still responsible for testing their
end-product for any additional compliance requirements required with this
module installed.
IMPORTANT NOTE:
In the event that these conditions can not be met (for example certain laptop
configurations or co-location with another transmitter), then the FCC
authorization is no longer considered valid and the FCC ID can not be used on
the final product. In these circumstances, the OEM integrator will be
responsible for re-evaluating the end product (including the transmitter) and
obtaining a separate FCC authorization.
Manual Information To the End User
The OEM integrator has to be aware not to provide information to the end user
regarding how to install or remove this RF module in the user’s manual of the
end product which integrates this module.
The end user manual shall include all required regulatory information/warning
as show in this manual.
OEM/Host manufacturer responsibilities
OEM/Host manufacturers are ultimately responsible for the compliance of the
Host and Module. The final product must be reassessed against all the
essential requirements of the FCC rule such as FCC Part 15 Subpart B before it
can be placed on the US market. This includes reassessing the transmitter
module for compliance with the Radio and EMF essential requirements of the FCC
rules. This module must not be incorporated into any other device or system
without retesting for compliance as multi-radio and combined equipment.
Body-worn Operation
This device was tested for typical body-worn operations. To comply with RF
exposure requirements, a minimum separation distance of 5mm must be maintained
between the user’s body, including the antenna.
The SAR evaluations is according to KDB 616217, and the module approach
distance is 5 mm for notebook.
Industry Canada statement:
This device complies with ISED’s license-exempt RSSs. Operation is subject to
the following two conditions:
- This device may not cause harmful interference, and
- this device must accept any interference received, including interference that may cause undesired operation.
Radiation Exposure Statement:
This equipment complies with ISED radiation exposure limits set forth for
an uncontrolled environment. This equipment should be installed and operated
with greater than 20cm between the radiator & your body.
This device is intended only for OEM integrators under the following
conditions: (For module device use)
- The antenna must be installed and operated with greater than 20cm between the antenna and users, and
- The transmitter module may not be co-located with any other transmitter or antenna.
As long as 2 conditions above are met, further transmitter test will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed.
IMPORTANT NOTE:
In the event that these conditions can not be met (for example certain laptop
configurations or co-location with another transmitter), then the Canada
authorization is no longer considered valid and the IC ID can not be used on
the final product. In these circumstances, the OEM integrator will be
responsible for re-evaluating the end product (including the transmitter) and
obtaining a separate Canada authorization.
End Product Labeling
This transmitter module is authorized only for use in device where the antenna
may be installed and operated with greater than 20cm between the antenna and
users. The final end product must be labeled in a visible area with the
following: “Contains IC:7542A-MT7921”.
Caution:
- The device for operation in the band 5150-5250 MHz is only for indoor use to reduce the potential for harmful interference to co-channel mobile satellite systems;
- For devices with detachable antenna(s), the maximum antenna gain permitted for devices in the bands 5250-5350 MHz and 5470-5725 MHz shall be such that the equipment still complies with the e.i.r.p. limit;
- For devices with detachable antenna(s), the maximum antenna gain permitted for devices in the band 5725-5850 MHz shall be such that the equipment still complies with the e.i.r.p. limits as appropriate;
- Where applicable, antenna type(s), antenna models(s), and worst-case tilt angle(s) necessary to remain compliant with the e.i.r.p. elevation mask requirement set forth in section 6.2.2.3 shall be clearly indicated.
DETACHABLE ANTENNA USAGE
This radio transmitter (IC: 7542A-MT7921 / Model: MT7921) has been approved
by ISED to operate with the antenna type listed below with maximum permissible
gain indicated. Antenna types not included in this list, having a gain greater
than the maximum gain indicated for that type, are strictly prohibited for use
with this device.
Approved antenna(s) list
Documents / Resources
|
Mediatek MT7921 (WiFi6) BLE Combo
Card
[pdf] User Guide
MT7921 WiFi6 BLE Combo Card, WiFi6 BLE Combo Card, Combo Card
---|---
References
- Disabling Secure Boot | Microsoft Learn
- Download Security Update for Windows 7 for x64-based Systems (KB3033929) from Official Microsoft Download Center
- WinPcap · Download
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>