User Manual

cause interference. The operator of the host product will be obligated to stop operating the device until
the interference have been corrected , WIFI testing using QRCT in FTM mode.
Additional testing, Part 15 Subpart B disclaimer
The final host / module combination need to be evaluated against the FCC Part 15B criteria for
unintentional radiators in order to be properly authorized for operation as a Part15 digital device.
The host integrator installing this module into their product must ensure that the final composite
product complies with the FCC requirements by a technical assessment or evaluation to the FCC rules,
including the transmitter operation and should refer to guidance in KDB 996369. For host products with
certified modular transmitter, the frequency range of investigation of the composite system is specified
by rule in Sections 15.33(a)(1) through (a)(3), or the range applicable to the digital device, as shown in
Section 15.33(b)(1), whichever is the higher frequency range of investigation. When testing the host
product, all the transmitters must be operating. The transmitters can be enabled by using publicly‐
available drivers and turned on, so the transmitters are active. In certain conditions it might be
appropriate to use a technology‐specific call box (test set) where accessory devices or drivers are not
available. When testing for emissions from the unintentional radiator, the transmitter shall be placed in
the receive mode or idle mode, if possible. If receive mode only is not possible then, the radio shall be
passive (preferred) and/or active scanning. In these cases, this would need to enable activity on the
communication BUS (i.e., PCIe, SDIO, USB) to ensure the unintentional radiator circuitry is enabled.
Testing laboratories may need to add attenuation or filters depending on the signal strength of any
active beacons (if applicable) from the enabled radio(s). See ANSI C63.4, ANSI C63.10 and ANSI C63.26
for further general testing details. The product under test is set into a link/association with a partnering
WLAN device, as per the normal intended use of the product.
To ease testing, the product under test is set to transmit at a high duty cycle, such as by sending a
file or streaming some media content.