Certification requirements for transmitters

Software required for setting the transmitter in different operating modes.

To perform the required testing for a transmitter there are required modes of operation that need to be supplied either by software or selection of switches.

For a device that can operate in different modulation types and bit rates, these conditions need to be set on the transmitter for testing.

Software to place the transmitter in a continuous transmit mode with and without modulation needs to be available. This software also needs to have the ability to set it in the different channels, such as lowest, middle and highest channel of operation. The software needs to have the ability to select the different modulation types and bit rates.

Software also needs to be available to monitor the transmission and receiving of the information packets to be able to identify any susceptibility to immunity test requirements for CE marking. Testing is performed while one device is transmitting and another is receiving. The software will show if there is any degradation of performance due to the immunity tests being performed.

 

Conducted and radiated measurements

The transmitter should have the ability to connect a cable to the output of the final stage. This port will be used to make the required conducted RF measurements. The matching impedance should be 50 ohm.
If the device has an on-board antenna then the port should be active only without the antenna. Usually a shorting position where a 0 ohm resistor can enable either the port or the antenna can be used.

 

Information required for certification

  • Letter of authorization
  • Confidentiality Request
  • FRN number from the FCC
  • Grantee Code from the FCC
  • Industry Canada Company Number
  • IC Representative Letter

 

FCC ID and IC label and location

ID Label/Location Info

  • Picture or sketch showing label placement in sufficient detail so that the name and model number can be clearly read. (It must include the appropriate compliance statement, e.g. 15.19 and the FCC ID number on its own line.)
  • A sample FCC ID label showing the actual dimensions and material of the ID label.

 

User Manual

  • A copy of the installation and operating instructions to be furnished the user. A draft copy of the instructions may be submitted if the actual document is not available. The actual document shall be furnished to the FCC when it becomes available. Manual must contain the appropriate statements, e.g. 15.105, 15.21, 15.27.

 

Schematic

  • A schematic diagram is required for intentional radiators.

 

Parts List

  • Parts list for the transmitter if not stated on the schematic.

 

Block Diagram

  • A block diagram showing the frequency of all oscillators in the device. The signal path and frequency shall be indicated at each block. The tuning range(s) and intermediate frequency(ies) shall be indicated at each block. A schematic diagram is also required for intentional radiators.

 

Operational Description

  • A brief description of the circuit functions of the device along with a statement describing how the device operates. This statement should contain:
    • Rated RF in watts (if applicable).
    • Frequency range.
    • Description of how the device operates.
    • Description of the circuitry in the device.
    • Description of the antenna and ground system, if any, used with the device.