User's Manual

2.4GHz Transmitter
Version: 1.0
User Interface Specification Date: 12/12/2011 10:41:00 AM
Confidential © Traxxas 2009 Page 6 of 8
2. Users Guide Information
It is required that Traxxas LLP place the text below in the product user guide along with all other pertinent
regulatory information.
We are only using the module on our own motherboard, and there is sufficient filtering on the module for the
supplied voltage supply.
The requirements for FCC Limited Modular Approval were released in March 2009 in the FCC’s Public
Notice: FCC Public Notice DA-08-672, Part 15 Unlicensed Modular Transmitter Approvals.
Design Criteria for Modular Approval
General Conditions:
The following conditions must be strictly adhered to for modular approval:
1. No modification to the module including the circuitry is permitted.
2. Design criteria to include antenna, interconnects, and local oscillator.
3. Testing of the final device configuration for Digital Emissions Compliance
The Spectrum 2.4Ghz, TX Board may not be altered or modified in any manner by the OEM or other entity.
Additionally, no component may be added which could change the radio frequency (RF) characteristics. These
include, but are not limited to unintentional or spurious emissions, immunity, ESD characteristics, or other
items commonly associated with RF devices. This includes all components; passive and active. Additionally, no
RF components may be placed between the RF output of the module and the antenna.
2.1 Antenna Regulation
The antenna has been selected and specifically tested with the Spectrum 2.4GHz, TX Board, and has been
certified through the regulatory agencies in the US and European Union authorized use. Use of any other
antenna type used with this unit voids the LMA grant for the said module.
2.2 Emissions Compliance Testing
Notwithstanding the Modular Approval for the device with associated antenna, the end product configuration
must meet digital emissions compliance and must be tested in accordance with FCC Part 15 requirements
confirming radiated emissions are within specified limits.
Applicable FCC guidelines:
• Part 15 Section 15.109 Sub-paragraph A, Class B Radiated Emission Limits.