Questions tagged [fcc]
FCC is the Federal Communications Commission, an independent agency of the United States federal government. It regulates the RF spectrum, broadband, and public safety.
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Maximum output power at 915 MHz without HAM license
I bought a telemetry module that is able to transmit with a power of 500mW at 915MHz.
I am in the U.S. and - as far as I understood - the 915 MHz does not require a license. However, I am not sure ...
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Problem in locating and stopping radiation from an ethernet phy and RMII signaling
An FCC unintentional radiators test is failing at 550MHz, after probing with a near field probe the source was located to these areas of the PCB (shown below in black circles). The RMII is running at ...
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Authorization for non-commercial use of nRF24L01P in custom PCB (university project)
For a university project (non commercial) I am designing a PCB that uses a nRF24L01P.
I read a number of forum threads (such as FCC certification for nrf24l01+) where the need of an FCC approval is ...
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Connect LED tapes using FFC or other flexible cable to go around obstacle
Two led tapes of width ~1cm sit 1cm apart. Between them in the middle, there's an obstacle around 3mm thick. I want to connect the LED tapes with a flexible cable that goes around the obstacle. FFCs ...
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FCC/IC/RED Modular Approvals in Place
Here you can read:
FCC/IC/RED Modular Approvals in Place
I'm aware what "Modular Approvals" means, but what does "in Place" mean within this context?
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CE/FCC certification for RF module only
I've seen many discussions about selling electronic devices with certified modules inside, but I haven't found any that address whether companies need to certify a module if it’s not intended to be an ...
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Continuous, modulated wave for sx1276 for FCC testing for LORA
I am getting ready to bring an electronic device using SX1276 Lora radio to market. The FCC testing lab has requested that I be able to put the radio into the following configuration:
100% Duty Cycle ...
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Connecting MIPI DSI 39 pin to 40-pin LCD touch display
My board is radxa zero 2 pro. It has 4-lane MIPI DSI connector with 39-Pin and 0.3mm pitch. MIPI pin details of radxa zero 2 pro:
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Impact on FCC certification due to replacement of GPS receiver module
Can anyone please guide on whether the replacement of GPS receiver with the same spec from the another brand for the cost reduction would impact the FCC approval received for the device or not? If yes ...
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Can products be imported to US for Beta testing without FCC certification
We need to import two products that are newly designed and operate on wifi and BLE. We are planning to get them for beta testing. We have talked to a few interested parties where the products will be ...
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Certifying a LoRa product for both EU868 and US915 MHz bands - are you allowed to toggle the frequency band in hardware?
Suppose I'm manufacturing a product whose radio module is capable of 868 and 915MHz, and switching between the two can be accomplished in the firmware. I could therefore conceivably have a logical ...
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FCC exemption for sub 1.705 MHz devices
The exemption section of the FCC rules on unintentional radiators (Title 47, chapter I, Subchapter A, Part 15, Subpart B, Section 15.103) has the following item :
(h) Digital devices in which both ...
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Product certification for devices mounted on elevators
Do products that will be mounted on elevators needs extra certifications (apart from FCC or CE) to be sold in North America and Europe?
The product will be connected in the roof of the car, connected ...
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Product certification for NA and European market
We are developing a product that includes an already certified radio module. We even use the IC of the module as the controler of the hole device. In the device we include a RTC, a ROM, a motor ...
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Is FCC/CE recertification needed if only the product name is changing?
I got FCC/CE certification for my product (a music player, unintentional radiator), but would now like to put out the same product under a new name. Nothing else is changing (PCB design, casing, etc. ...
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FCC certification for different products with the same antenna design
I was reading about FCC intentional radiation certification and am confused about a scenario. Let's say I have two products - Product A and product B.
Say I get FCC certification (for the wireless ...
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Taking a BLE product to market utilizing a pre-certified Bluetooth module
I've designed a product that utilizes a Raytac MDBT50Q-P1MV2 'pre-certified' MCU+Bluetooth module (based on Nordic nRF52840) and am now considering what it would take for me to legally sell such a ...
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EMI standards just for power on/off
I know the FCC has EMI/EMC maximums for connected emissions into the AC power cable while electronics are on.
But, are there FCC requirements on the brief connected emissions/bursts when the ...
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How to prove ROHS compliance of a component
I emailed the supplier of an OLED panel that comes mounted on a PCB that contains the driver circuitry, and they claim the part is ROHS compliant. I will be using this component in a system that I ...
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Is a system powered by an FCC-compliant power supply FCC-compliant if the rest of the system doesn't require compliance?
As I understand it, AC/DC SMPS power supplies and unintentional radiators (anything with a chip clocked at a speed of more than 9 kHz) must be FCC compliant.
I am preparing a device which uses an FCC-...
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FCC reguation for PCB in case of daughter board is FCC compliant
I am working on a project that uses the ESP32 WROOM module which is FCC compliant. I wonder if the FCC compliance gets void if new components are added to the module via a PCB. From my understanding, ...
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What are the FCC rules on taking a wifi-system out of its current packaging and putting it inside another unit?
I have a wifi module (Advantech WISE-4220) shown in this datasheet.
If I remove the outer plastic casing and put the chip/antenna, unmodified, into another plastic case, am I breaking any FCC ...
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How to prepare my firmware for FCC Part 15 testing
I have a device for which I want to do FCC Part 15 testing - unintentional radiation. (It includes an ESP WROOM Wifi/Bluetooth module with modular approval).
This device connects to wifi every 20 ...
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How do you build a spurious emissions test rig?
Naively, it seems like you could test for spurious emissions by:
Placing the device-under-test (DUT) in a grounded metal box with a broadband antenna inside.
Hook the antenna's coax cable to the S21 ...
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Is it POSSIBLE for a wireless device to use the cellular frequencies without approval from the FCC
My question is purely hypothetical and does NOT apply to any real life scenarios. Is it possible for a wireless device to use the cellular quad band successfully without FCC approval or knowledge.
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Where is the third antenna on this avalanche beacon PCB?
I have been looking at the pictures of the internal circuitry of a Barryvox S avalanche beacon on the FCC ID website. I cannot open mine, since that would void the warranty.
This beacon, as all modern ...
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Why EIRP has denominator factor 30 in the formula?
I am calculating the EIRP using FCC guidelines. I came across the formula in the FCC guidelines that has a denominator value of 30. That is, EIRP = (E x d)^2/30. Can anyone explain what 30 is and ...
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Spurious measurements FCC
I was wondering if someone can help me with a project at work. I am very very new into RF.
I work for an EMC/EMI lab and we want to do some spurious emissions testing and establish a test procedure ...
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FCC testing for boards with programmable firmware
I'm curious how FCC conformity testing is done on PCBs that contain devices with programmable firmware. Specifically, boards that are designed to allow the end-user to reprogram the firmware (such as ...
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Simulation tools for FCC SDoC testing
For as expensive as FCC-conformity lab testing costs, I am curious if there are any simulation tools that could help in producing an approximation of what a lab test would find, given a PCB design. ...
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How to connect a display with MIPI DSI connector X to a board with connector Y?
I want to connect a touchscren display to a development board via MIPI DSI interface, but their connectors do not match.
The display uses a 30-pin FCC, 1mm pitch, double-side contacts connector (link ...
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FCC Complaince & Removable Bluetooth Antennas
We are developing a product that will hopefully soon be sold internationally and will therefore be put through FCC & CE Certification testing. Part of that design is an audio mixer with an ...
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FCC certified module in europe
If I have an FCC certified BLE module, can I use it in a product destined for Europe and CE mark the product with no additional (intentional radiator) testing?
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FCC compliance nRF9160 external antenna
We are currently evaluating a nRF9160 for a consumer/industrial product. It does not have a built in antenna for GPS/LTE. There are detailed specs on designing for an external one from Nordic. Now ...
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Need help understanding RF radio parameters
I am experimenting with the SPSGRF-915 RF transceiver, particularly with the different center frequencies.
My question mainly revolves around the situation where multiple devices can transmit at the ...
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Which products require EMC certificate?
What are the guidlines (or where can I find them) for which products require EMC testing certificate? I know that this determined per country, so for starters let's go with the US.
My product contains ...
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Does my Wireless Charging PCB need to have FCC, UL, CSA, certified marks?
I have a simple 5W output wireless charging device that uses a tx coil to transfer power to a phone, this is powered from a 1800mAh battery. Do I need any certifications for this?
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Are IEC 60601-1-2 medical emc and FCC compatible?
I must comply with the medical EMC standard IEC 60601-1-2 but wireless modules do not come certified to this standard.
For example, telit fn980 is certified to FCC, RED, etc.
Are FCC certified devices ...
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If all parts in a product are FCC or CE certified then do i still need to apply for certification for the complete product?
I am building a CNC product and all the electronics parts we are using are either FCC or CE certified. Do I then have to obtain a separate certification for the product as a whole ?
Also any idea what ...
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Bluetooth and Wifi Maximum Power limt
I saw below Bluetooth chip comparison of many module , most of all are having 8dbm max power , what I know FCC has 30dbm and CE has 20dbm Max power limit so why Bluetooth module are limited to only ...
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FCC rules for wideband / spread spectrum devices
I'd like to clarify how the FCC measures power in a frequency band (both for intentional and unintentional radiators). There are devices which either frequency hop (output is a sine wave, but center ...
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Why are radiated emissions standards for consumer electronics different from industrial?
Why are radiated emissions standards for consumer electronics different from industrial?
Source:??
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Is EMI/EMC still a big concern for a PC case?
I've recently started looking into researching potential concerns when it comes to using a non-metal material for a custom PC case, specifically wood. I've seen people talk about heat, electrical ...
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Are external data connections considered "unintentional radiation" by the FCC?
Does a device with an external communication port of some kind fall under "intentional radiation" or "unintentional radiation" according to the FCC for testing and certification ...
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Is EMC (FCC and EU) testing performed as sold or as used?
I have a prototype that inserts a fairly weak ISM band RF signal (HF/VHF) as a way of detecting a connection between two metal objects without there being a DC return path (Ideally I would use TDR but ...
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Does using an antenna extension cable violate FCC cert?
I have a question about FCC part 15 certs. Using the Particle Cellular B series SoM, they have a "Grant of equipment authorization" to use the module as an end device. Link to the module docs below.
...
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CE/FCC/RoHS/etc certification for Intel NUC and other barebone MiniPCs?
Intel sell the Intel NUC without a hard drive or ram. They provide a list of compatible rams and drives. By sliding in the ram stick and drive, am I not invalidating all of the certificates on the ...
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Is there any country where the 868 MHz or 915 MHz ISM band cannot be used?
The product I am working on (Electronic Shelf Label) uses the 915 MHz radio frequency band and is currently being deployed in Asia. I am gathering the list of countries that the 915 MHz frequency is ...
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Building a UHF RFID Reader, FCC regulations?
I've been working on a project that involves tiny UHF transponders (ex. OMNI-ID Fit 220) that fit into a product with very limited space. We wanted to build our own reader (5 or 6 of them) because it'...
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Maximum transmit power allowed for 802.11g
I'm learning about the 802.11 regs. In a book I'm using, "CCNA Wireless 200-355 Official Cert Guide (Certification Guide) 1st Edition
by, David Hucaby (Author). Page 53", it has the following clause ...
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