User's Manual

The 2.4G WIFI Module is based on ESP8285 chip .
Below are steps for TX verification：
tx_contin_en 1 // return：wifi tx continuous test!
wifitxout < parameter 1> < parameter 2> < parameter 3>
< parameter 1>：Send channel option and allowed number is 1~11.
< parameter 2>：Send data rate option, the relationship between input
parameters and rates is shown in table 1.
< parameter 3>：Send power attenuation, which is 8 bits directed number
and 0.25 dB unit.
2.10 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 Part 15 digital device .
limits or band edge limits (e.g.，where a different antenna may be causing
additional emissions).
b)The testing should check for emissions that may occur due to the intermixing
of emissions with the other transmitters， digital circuitry， or due to physical
properties of the host product (enclosure). This investigation is especially
important when integrating multiple modular transmitters where the certification
is based on testing each of them in a stand-alone configuration. It is important
to note that host product manufacturers should not assume that because the
modular transmitter is certified that they do not have any responsibility for final
product compliance.
C)If the investigation indicates a compliance concern the host product
manufacturer is obligated to mitigate the issue. Host products using a modular
transmitter are subject to all the applicable individual technical rules as well as
to the general conditions of operation in Sections 15.5， 15.15， and 15.29 to
not cause interference. The operator of the host product will be obligated to stop
operating the device until the interference has been corrected
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.
Frequency spectrum to be investigated
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.