ST1955 FCC IC Instruction For Use_V21_III 02 Aug. 21 Instruction for FCC/IC compliant use Stream1955 Network Audio Streaming Module Version: 2.1 Authors: C. Apel/C.Arnardi Reviewer: Date: Page 1 of 13 02 Aug. 21 StreamUnlimited Engineering GmbH Gutheil-Schoder-G.
ST1955 FCC IC Instruction For Use_V21_III 02 Aug. 21 Table of contents Instruction for FCC/IC compliant use .............................................................................. 1 1. Document History ............................................................................................. 3 Confidentiality Notice ....................................................................................................... 3 Copyright Notice ..........................................................
ST1955 FCC IC Instruction For Use_V21_III 02 Aug. 21 1. Document History No. Primary Author(s) Description of Version Date Completed 1.0 C. Apel Initial version 2019-11-14 1.1 C. Apel Update conditions for referring to modular certification 2020-01-10 2.0 C. Arnardi Initial version AP6275S 2021-05-14 2.1 C. Apel Changed FCC/IC IDs for AP6275S, updated antenna list 2021-06-14 C.
ST1955 FCC IC Instruction For Use_V21_III 02 Aug. 21 2. Granted certificates FCC 47 CFR Part 15 FCC Part 15.247 DTS WIFI 2.4 GHz 802.11 b/g/n/ax FCC Part 15.407 FCC Part 15.247 UNII WIFI 5GHz 802.11 a/n/ac/ax DSS Bluetooth 4.2/ BLE IC RSS-247 802.11 a/c/g/n/ac/ax Bluetooth 4.2 / Bluetooth Low-energy ETSI EN 301 893 V2.1.1 EN 300 440 V2.1.1 EN 300 328 V2.2.2 WIFI 5 GHz 802.11 a/n/ac/ax WIFI 2.4 GHz 802.11 b/g/n/ax Bluetooth 4.
ST1955 FCC IC Instruction For Use_V21_III 02 Aug. 21 3. Conditions for re-use of modular certification To make use of modular certification, product level MUST comply with ALL rules mentioned below. If these conditions cannot be met, then the FCC authorization is no longer considered to be valid and StreamUnlimited's FCC ID may not be used on the final product. In these circumstances the host integrator is responsible for evaluating the final product and obtaining a separate FCC authorization. 1. 2. 3.
ST1955 FCC IC Instruction For Use_V21_III 02 Aug. 21 Additional Testing, Part 15 Subpart B Disclaimer : The module is only FCC authorized for the specific rule parts listed on the grant, and that the host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. The final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed.
ST1955 FCC IC Instruction For Use_V21_III 02 Aug. 21 3.2 Instruction for use requirements To comply with the FCC and ISED rules the OEM/host integrator shall include the following statements on the device, packaging and in the user manual, as applicable. 3.2.1 USA : The device shall bear the following statement in a conspicuous location on the device.
ST1955 FCC IC Instruction For Use_V21_III 02 Aug. 21 However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver.
ST1955 FCC IC Instruction For Use_V21_III 02 Aug. 21 3.2.2 Canada: User manuals shall contain the following text, or an equivalent notice, that shall be displayed in a conspicuous location, either in the user manual or on the device, or both. The statements must be included in both English and French. This Class B digital apparatus complies with Canadian ICES-003 and RSS-247.
ST1955 FCC IC Instruction For Use_V21_III 02 Aug. 21 4. Antenna type and connections Stream1955 provides two antenna ports via microwave coaxial connectors. Antennas with 50 Ohm characteristic impedance must be connected to each microwave coaxial connector via a coaxial RF cable. No external amplifier or tuning circuitry must be used.
ST1955 FCC IC Instruction For Use_V21_III 02 Aug. 21 Manufacturer and Part Number: Tekfun F04A-SR-V2 Type of antenna: External Swivel dipole Frequency band: 2400 – 2500 MHz Peak Gain: 2.5 dBi Average Total Efficiency: > 72% 2.9dBi > 53% Manufacturer and Part Number: Tekfun F50 Type of antenna: Frequency band: 5150 – 7125 MHz External Swivel dipole 2400 – 2500 MHz 5150 – 7125 MHz Peak Gain: 2.73 dBi 3.
ST1955 FCC IC Instruction For Use_V21_III 02 Aug. 21 4.1 Antenna’s valid configurations Figure 1 Flex Balanced Dipole Figure 2 External Swivel Dipole Page 12 of 13 StreamUnlimited Engineering GmbH Gutheil-Schoder-G.
ST1955 FCC IC Instruction For Use_V21_III 02 Aug. 21 5. EMC application notes Stream1955 is optimized for low radiation. Consider following recommendations when designing application boards: • • • • • • Use a GND plane underneath the module. Use series resistors in all low-speed interface lines, values need to be chosen depending on signal frequency and length of signal lines on application board. Use common mode signal filters in USB data lines, e.g. Wuerth 744232161.
