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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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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 ...
SomeRadioGuy's user avatar
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49 views

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: ...
TryCatch's user avatar
2 votes
1 answer
603 views

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 ...
Harsh's user avatar
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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 ...
vkbb's user avatar
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FCC ESP32 S2 MINI 2 Module

We found a failure in the ESP32 S2 MINI2 Module FCC-RSE testing. Below are the images of the failure peak(2.4835GHz) in 11g testing. After the failure, if we set the attenuation with 24 means 6dB, ...
Kavin Shah's user avatar
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1 answer
36 views

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 ...
Escher's user avatar
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3 votes
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104 views

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 ...
Mobius's user avatar
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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 ...
juan jesus pinuaga's user avatar
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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 ...
juan jesus pinuaga's user avatar
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1 answer
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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. ...
Tristan's user avatar
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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 ...
vkbb's user avatar
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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 ...
DrTarr's user avatar
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1 answer
79 views

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 ...
bobuhito's user avatar
  • 512
2 votes
1 answer
274 views

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 ...
sebastian323's user avatar
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246 views

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-...
sebastian323's user avatar
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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, ...
InputBlackBoxOutput's user avatar
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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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1 answer
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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 ...
Konstantin Schubert's user avatar
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1 answer
106 views

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 ...
KJ7LNW's user avatar
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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.
David J's user avatar
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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 ...
RH6's user avatar
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1 answer
140 views

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 ...
Sai's user avatar
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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 ...
DRF's user avatar
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4 answers
204 views

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 ...
Sittin Hawk's user avatar
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2 answers
59 views

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. ...
Sittin Hawk's user avatar
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1k views

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 ...
Jurc192's user avatar
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2 votes
1 answer
203 views

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 ...
Edd_P's user avatar
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2 answers
317 views

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?
BeB00's user avatar
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1 vote
1 answer
272 views

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 ...
Kyle Hunter's user avatar
2 votes
0 answers
95 views

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 ...
Cimory's user avatar
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2 votes
2 answers
219 views

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 ...
Geva Tal's user avatar
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0 answers
96 views

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?
Bryan Cunningham's user avatar
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0 answers
274 views

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 ...
SeanJ's user avatar
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1 answer
217 views

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 ...
Tapan's user avatar
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0 answers
81 views

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 ...
4Mhz Crystal's user avatar
1 vote
1 answer
70 views

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 ...
Alex I's user avatar
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3 votes
2 answers
93 views

Why are radiated emissions standards for consumer electronics different from industrial?

Why are radiated emissions standards for consumer electronics different from industrial? Source:??
Will's user avatar
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0 votes
2 answers
2k views

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 ...
UChimera's user avatar
0 votes
3 answers
122 views

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 ...
KJ7LNW's user avatar
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1 vote
0 answers
55 views

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 ...
CentralCee's user avatar
1 vote
2 answers
253 views

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. ...
user2676271's user avatar
0 votes
1 answer
197 views

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 ...
Hackeron's user avatar
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4 votes
1 answer
3k views

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 ...
uuwen's user avatar
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3 votes
1 answer
250 views

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'...
C10-X's user avatar
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1 vote
1 answer
267 views

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 ...
Frank's user avatar
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0 votes
1 answer
83 views

FCC / CE requirements for adapter pcb?

A product consisting (electronically) just of a PCB with a male USB-C one one side, 5mm of traces and a female USB-C on the other end. No other components at all. To be used as consumer device. How ...
Stefan's user avatar
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0 votes
1 answer
219 views

Can the Olimex ESP32-EVB be used in a commercial application?

My friend and I are very near a final product design, but we currently are using an Olimex ESP32-EVB relay module as part of the final system. Recently we were told by a consultant that the FCC could ...
Logic1's user avatar
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0 votes
1 answer
92 views

FCC/ETSI conformance with backscatter

Do passive backscatter devices fall under regulations of FCC/ETSI? Suppose a system emits a 4W EIRP tone in the ISM band (conforming to FCC/ETSI regulations). A fully passive device backscatters data ...
divB's user avatar
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2 votes
1 answer
137 views

Do I need to recertify a product if I add a DC to DC converter?

I have a product that has been FCC verified as an unintentional radiator, I have fixed a problem with the power that required a DC to DC converter that operates in the 100kHz to 300kHz range (added to ...
Voltage Spike's user avatar
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4 votes
1 answer
2k views

Self Certifying for FCC testing

I have been tasked by my current employer to look into the costs of self certifying. With past companies I have worked for, all of the tests were at a 3rd party lab. The closest thing I have seen to ...
joe's user avatar
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