RF BT products

Bluetooth is a new generation of low-cost, low-power, short-range wireless connection technology standards, is an open specification for data and voice wireless transmission.

    The goal of Bluetooth technology is to develop a globally unified open wireless connectivity technology standard that enables mobile phones, laptops, PDAs, dial-up networks, printers, fax machines, digital cameras, and other data and voice devices to follow this technical standard. The interconnection forms a personal area wireless communication network, so that various information devices within its scope can realize seamless resource sharing, and the open wireless connection technology standard is named BLUETOOTH, that is, "Bluetooth".

For Bluetooth-based wireless products, the Bluetooth function is divided into two parts, classic Bluetooth and low-power Bluetooth or BLE.

Classic Bluetooth (commonly referred to as BT2.0, BT2.1, BT2.1+EDR (BDR+EDR), BT3.0 (BDR+EDR), etc.) for voice transmission, BLE (commonly known as BT 4.0 Single mode) is applied to data transmission.

The single mode of 4.0 may only be BLE, while the single mode of 4.1 and 4.2 may be BLE, which may be classic.

Classic Bluetooth has a frequency range of 2402-2480MHz, a total of 79 channels, channel spacing of 1MHz, using Frequency-hopping Spreader (FHSS), BLE frequency range of 2402-2480MHz, a total of 40 channels, channel spacing of 2MHz

Glossary

EDR: Fully called Enhanced Data Rate. By improving the ability of multitasking and the simultaneous operation of multiple Bluetooth devices, EDR enables Bluetooth devices to transmit at speeds up to 3 Mbps.

BLE: Fully known as Bluetooth Low Energy. One of the most important features of Bluetooth Specification 4.0 is low power consumption. BLE enables Bluetooth devices to be powered by a coin cell battery for years of continuous operation. Clearly, BLE enables Bluetooth devices to have extremely bright applications in markets such as timepieces, remote controls, healthcare and motion sensors.

This section is only for the classic Bluetooth description.

I. EU CE certification (Radio Equipment Directive 2014/53/EU)

Certification form: CE-RED; NB-RED

Testing standard: ETSI EN 301 489-1 V2.2.0 (2017-03)

EN 55032: 2015

EN 55024: 2010+A1: 2015

EN 62479:2010

ETSI EN 301 489-17 V3.2.0 (2017-03)

ETSI EN 300 328 V2.2.0 (2017-11)

Test the EMI part of the project:

1. Conduction (CE) 0.15~30MHz EN 55032

2. Telecom end conduction (ISN) 0.15~30MHz EN 55032

3. Space radiation (RE) 30MHz~6GHz EN 55032

4. Harmonic current: Standard EN 61000-3-2 rated voltage range is AC220~240V;

This project tests the infinite value of products with rated power of 75W and below, no need to test.

5, voltage fluctuations, flicker (Flicker): standard EN 61000-3-3 rated voltage range is AC220 ~ 240V products, this item is required.

Test limit requirements: short-term flicker value Pst ≤ 1.0; long-term flicker value Plt ≤ 0.65; relative steady-state voltage change dc ≤ 3.3%; maximum corresponding voltage change dmax ≤ 4%.

Test item EMS part: The following EMS test levels are standard general requirements.

1. Electrostatic immunity (ESD) standard: EN 55024 (citing IEC61000-4-2);

Performance criteria: Class B;

Contact discharge: ± 4kV; each discharge point has 25 polarities;

Air discharge: ±8kV; each discharge point has 10 polarities;

2. Radiation immunity (RS) standard: EN55024 (citing IEC61000-4-3);

Performance criteria: Class A;

Frequency range: 80~1000MHz frequency and above;

3. Electrical fast transient burst (EFT) standard: EN55024 (citing IEC61000-4-4);

Performance criteria: Class B;

AC power input: 1kV. Repeat frequency 5 kHz;

DC power input: 0.5kV. Repeat frequency 5 kHz;

Signal port and telecom port: 0.5kV. Repeat frequency 5 kHz (connected to the interface port of the data cable specified by the manufacturer but not expected to be 3 m) This test is not required);

4, surge / lightning strike (Surge)

Performance criteria: Class B;

Test specification: AC input: 1.2/50 (8/20) combined wave; line-line: 1kV; line-ground: 2kV

DC input: 1.2/50 (8/20) combined wave; 0.5kV (only for ports that may be directly connected to the outdoor cable according to the manufacturer's specifications)

Signal port and telecom port: 10/700 waveform; 1kV or 4kV (only for ports that may be directly connected to the outdoor cable according to manufacturer's specifications)

The voltage applied to the unprotected port is typically 1KV);

5. Conducted immunity (CS)

Performance criteria: Class A

Test voltage: 3V/10V

6, power frequency magnetic field immunity (MS)

Performance criteria: Class A;

Test voltage: 3A/m; 10A/m; 30A/m; 100A/m;

7, voltage drop, short-term interruption of immunity (Dips)

Performance criteria: Class B / Class C;

Test the RF part of the project:

1, RF output power RF output power

Limit ≤20dbm

Test conditions: the test voltage is normal pressure, the test temperature is normal temperature and high temperature

2. Accumulated transmission time, frequency occupancy and hopping sequence Accumulated Transmit Time, Frequency Occupation and Hopping Sequence

Accumulated transmission time limit: ≤ 0.4s

Frequency occupancy limit: ≥58.45MHz

Hop Sequence Limit: The hopping sequence should always contain at least N hopping frequencies, where N is 15 or 15 MHz divided by the minimum hopping frequency interval (in MHz), whichever is greater.

Test conditions: test voltage is normal pressure, test temperature is normal temperature

3, frequency hopping channel spacing Hopping Frequency Separation

Limit ≥100kHz

4, Adaptive Adaptive Rate (Adaptive Frequency Hopping) (output power > 10dbm need to do this test item)

5, occupied bandwidth Occupied Channel Bandwidth

   Limit: The frequency falls completely within the range of 2400-2483.5MHz

6. Transmitter unwanted emissions in the out-of-band domain in the out-of-band domain

7. Transmitter unwanted emissions in the spurious domain Transmitter unwanted emissions in the spurious domain

8, receiving spurious Receiver spurious emissions

9, receiving blocking Receiver Blocking

Second, the US FCC certification

Certification form: FCC ID

Testing standard: FCC Part15 Subpart C 2018, Section 15.247

Test items:

1. Conducted harassment Conducted Emission

2. Radiation Spurious Emission

3, the maximum output power Conducted Peak Output Power

   Limit value: 21dbm or 30dbm or less

4, 20db bandwidth 20dB Occupied Bandwidth

   Limit: none

4, channel spacing Carrier Frequencies Separation

Limit: >25KHz or >two-thirds of the 20 dB bandwidth

5, the number of frequency hopping channels Hopping Channel Number

Limit value: ≥15 channels

6, dwell time Dwell Time

Limit value: <0.4s

8, sideband Band Edge

9, antenna requirements Antenna Requirement

Third, Japanese certification

Certification form: TELEC

Testing standard: MIC Notice No.88 Annex43

Test items

1, frequency error Frequency Tolerance

Limit value: ±50ppm

Test conditions: test voltage is normal pressure and high and low pressure, test temperature is normal temperature

2, 99% occupied bandwidth Occupied Bandwidth (99%)

Limit value: <83.5MHz

Test conditions: test voltage is normal pressure and high and low pressure, test temperature is normal temperature

3. Spread spectrum bandwidth (90%) Spread-Spectrum Bandwidth (90%)

Limit: ≥ 0.5 MHz

Test conditions: test voltage is normal pressure and high and low pressure, test temperature is normal temperature

4, launching spurious Spurious Emission

Test conditions: test voltage is normal pressure and high and low pressure, test temperature is normal temperature

5, interference prevention function Interference prevention function

Test conditions: test voltage is normal pressure, test temperature is normal temperature

6, antenna power Antenna power

Limit value: ≤ 3mW

Test conditions: test voltage is normal pressure and high and low pressure, test temperature is normal temperature

7, receiving spurs Limitaion Of Collateral Emissions Of Receiver

Limit: ≥ 0.5 MHz

8, dwell time Dwell time

Limit value: <0.4s

Test conditions: test voltage is normal pressure, test temperature is normal temperature