Product Info
NINA-B4 series - Application note
UBX-20037320 - R03 Contents Page 8 of 19
C1-Public
2.2.3 RF-exposure
All transmitters regulated by FCC must comply with RF exposure requirements. KDB 447498 General
RF Exposure Guidance provides guidance in determining whether proposed or existing transmitting
facilities, operations or devices comply with limits for human exposure to Radio Frequency (RF) fields
adopted by the Federal Communications Commission (FCC).
NINA-B4 modules are approved for installation into mobile and/or portable host platforms and must
not be co-located or operating in conjunction with any other antenna or transmitter – except in
accordance with FCC multi-transmitter guidelines. End-users must be provided with transmitter
operating conditions for satisfying RF Exposure compliance.
☞ Having a separation distance of minimum 5 mm between the user and/or bystander and the
antenna and /or radiating element ensures that the maximum output power of the NINA-B4
modules is below the SAR test exclusion limits presented in KDB 447498 D01v06 (US market
limits).
2.2.4 End-product compliance
Application designs must conform to the following requirements:
Any changes to hardware, hosts or co-location configuration may require new radiated
emission and SAR evaluation and/or testing.
Only authorized antenna may be used.
Any notification to the end-user about how to install or remove the integrated radio module is
NOT allowed.
The approval of the modular transmitter in NINA-B4 series modules does not exempt the end-
product from being evaluated against any applicable regulatory demands. The evaluation of
the end-product shall be performed with the NINA-B4 module installed and operating in a way
that reflects the intended use case of the end-product. The upper frequency measurement
range for the end-product evaluation is the 5th harmonic of 2.4 GHz as declared in 47 CFR Part
15.33 (b)(1).
The following requirements apply to all products that integrate a radio module:
o Subpart B - UNINTENTIONAL RADIATORS
To verify that the composite device of host and module complies with the
requirements of FCC part 15B the integrator shall perform sufficient measurements
using equipment compliant with ANSI 63.4-2014.
o Subpart C - INTENTIONAL RADIATORS
The integrator must carry out sufficient verification measurements, using compliant
ANSI 63.10-2013 equipment, to validate that the fundamental and out-of-band
emissions of the transmitter part of the composite device comply with the
requirements of FCC part 15C.
When the items listed above are fulfilled the host manufacturer can use the authorization
procedures presented in Table 1 of 47 CFR Part 15.101.
2.2.4.1 Test modes for end-product evaluation
When testing, all the transmitters installed into the end-product must be operating. The
transmitter of NINA-B4 is operated in normal “paired” mode with another device, as per the normal
intended use of the end-product (e.g. data transfer, music playing, etc.). Activate all end-product
transmitters capable of simultaneously transmissions. Please follow the instructions for each
transmitter on how to operate them.
More detailed information about end-product (host product) test guidance can be found in Section 3
of KDB 996369 D04 Module Integration Guide v02.