Bluetooth – RED / ETSI / FCC

What Is Bluetooth — RED?

Bluetooth radio test is the experimental group in which the classical Bluetooth or Bluetooth Low Energy device operating in the 2.4 GHz ISM band is measured in terms of output power, frequency hopping behavior, unwanted broadcasts and modulation characteristics. RF-PHY tests are also applied for Bluetooth SIG qualification.

Purpose of Bluetooth — RED

The purpose is to verify that the device meets the radio spectrum requirements and complies with the qualification requirements for Bluetooth brand use.

Which Products Is Bluetooth — RED Applied To?

Headphones and audio devices
Wearable devices and health sensors
BLE based IoT modules
Automotive interconnect modules

In Which Sectors Is Bluetooth — RED Used?

TelecommunicationsElectronicsSoftwareCyber Security

Standards Related to Bluetooth — RED

REDEU radio equipment directive test
ETSIEuropean telecommunications standards test
FCCUS radio and EMC regulations test

Bluetooth — RED Conditions

Bant: 2400–2483.5 MHz ISM band
Quantities measured: Output power/EIRP, frequency hopping frequency and channel occupancy, unwanted broadcasts, modulation characteristic
Modlar: Classic Bluetooth (BR/EDR) and/or Bluetooth Low Energy
test control: The device is driven in test mode (DTM) with channel and power fixed

Equipment for Bluetooth — RED

semi-reflective room
Spectrum analyzer and vector signal analyzer
Bluetooth protocol/RF tester
Calibrated antenna and cable set

Sample Requirements for Bluetooth — RED

The device must support direct test mode (DTM)
Antenna type and gain must be documented
Highest power class configuration should be tested
Final production software must be used

Duration of Bluetooth — RED

Typically 1–2 weeks depending on scope and number of modes.

Bluetooth — RED Procedure

1The device is put into test mode.
2Power is measured in the lower, middle and upper channels.
3Frequency hopping behavior and channel occupancy are recorded.
4Unwanted publications are scanned.
5Modulation characteristics are measured.
6Results are compared with the limits.

Bluetooth — RED Acceptance Criteria

Acceptance criteria are the limit values of the applied radio standard and the passing conditions of the RF-PHY specification in the Bluetooth SIG qualification.

Evaluation of Results

Radio spectrum compliance (RED / FCC) and Bluetooth SIG qualification are two separate obligations; The completion of one does not satisfy the other. Use of the Bluetooth brand requires SIG qualification.

Bluetooth — RED Report

Applied standards
Device, module and antenna description
Test mode and channel list
Measurement results and limits
Measurement uncertainty

Accreditation

EUROLAB holds internationally recognised accreditation obtained from accreditation bodies party to the IAF and ILAC multilateral recognition arrangements, under ISO/IEC 17025 for laboratory testing, ISO/IEC 17020 for inspection and surveillance, and ISO/IEC 17021-1 and ISO/IEC 17065 for system and product certification. This chain ensures the reports and certificates issued are accepted worldwide.

Whether this test can be offered within accredited scope depends on your product and the standard applied; since accreditation is method-based, the scope is confirmed in writing at the quotation stage.

Scope and authorisations

Related Regulations

Radio Equipment Directive 2014/53/EU (RED)
Bluetooth SIG qualification program

RF and Wireless Testing — What Does This Testing Field Cover?

The section below describes the field that the Bluetooth test belongs to; the conditions and acceptance criteria of this particular test are given in the sections above. The scope specific to your product is confirmed in writing at the quotation stage.

RF and wireless testing shows that a device containing a radio uses the spectrum correctly and operates within the limits the relevant legislation allows. This family is a separate body of work from EMC: EMC addresses unwanted interference, whereas here INTENTIONAL emission is assessed.

Spectrum is a public and limited resource, and this determines the legal character of the field. A device spilling outside its permitted band or emitting excess power is not merely a technical defect but a violation that disrupts someone else's service. Radio conformity is therefore policed more strictly than other test fields and markets maintain their own national regimes.

Measurements run separately on the transmitter and receiver sides. On the transmitter side, output power, occupied bandwidth, frequency error, unwanted emissions, adjacent channel power and the power envelope are measured. On the receiver side, sensitivity, selectivity, blocking and spurious response rejection are assessed. The receiver side is often neglected, but in some bands it is a regulatory requirement.

Access protocol specific behaviours are a third axis: listen before talk (LBT), duty cycle, dynamic frequency selection (DFS) and transmit power control (TPC). These mechanisms enable spectrum sharing and it must be shown that they work correctly.

HUMAN EXPOSURE is the fourth axis and one of the most commercially critical. For devices used close to the body, SAR (specific absorption rate) is measured; for devices used at a distance, a field strength assessment is made. Limits and measurement methods vary by market; the same device is assessed separately for Europe and the United States.

Market regimes are decisive in this family and do not substitute for one another: the Radio Equipment Directive and ETSI harmonised standards in Europe, FCC authorisation in the United States (through a TCB for intentional radiators), ISED in Canada, MIC in Japan, KC in South Korea and SRRC in China each carry their own set of requirements. The same device requires a separate file for each market, and some markets impose a local representative or local testing requirement.

Module integration is the subject that raises the most questions in the field. Using a certified radio module does not automatically make the device compliant. A module certificate is valid for a defined antenna, a defined supply and defined conditions of use; if the antenna changes, the layout changes or the module is operated at a different power level, reassessment is required.

The presence of several radios in the same device (Wi-Fi + Bluetooth + cellular + NFC) gives rise to a simultaneous transmission assessment: SAR and unwanted emission measurements are made for the worst case in which the radios operate together.

Method groups in this field

Transmitter measurements
Output power, occupied bandwidth, frequency error, unwanted emissions, adjacent channel power, power spectral density.
Receiver measurements
Sensitivity, selectivity, blocking, spurious response rejection.
Spectrum sharing mechanisms
Verification of listen before talk, duty cycle, dynamic frequency selection and transmit power control.
Human exposure
SAR measurement (handheld and body-worn devices), field strength assessment, multi-radio scenarios.
Protocol conformity
Cellular network conformity testing, Bluetooth and Wi-Fi certification testing, GNSS performance.
Antenna measurements
Gain, radiation pattern, efficiency and total radiated power (TRP) measurements.

Commonly confused in this field

Using a certified module does not automatically make the device compliant; if the antenna, layout or power level changes, reassessment is required.
An FCC file does not replace a CE file; each market operates its own regime.
Receiver side measurements are a regulatory requirement in some bands; measuring only the transmitter produces an incomplete file.
SAR limits and measurement methods differ by market; a result in one market does not carry over to another.
For devices carrying several radios the simultaneous transmission scenario must be assessed; measuring them individually is not sufficient.
Some markets impose local testing or a local representative requirement; technical conformity alone does not secure market access.

Which decisions these results support

Market access under radio equipment legislation
Verification of the antenna and RF front end design
SAR and RF exposure conformity
Verification of module integration and the scope of reassessment
Determining the worst case in multi-radio scenarios

Related Tests

Frequently Asked Questions About Bluetooth — RED

Is Bluetooth SIG qualification sufficient for CE?

No. SIG qualification is related to trademark usage rights. For supply to the European market, radio spectrum, EMC and safety requirements must also be met under the Radio Equipment Directive.