Jiechen NC3 ANC ENC TWS Bluetooth Earphone Instructions
- October 30, 2023
- Jiechen
Table of Contents
NC3 circuit Description
NC3 is an ANC+ENC TWS Bluetooth earphone,Compliant with Bluetooth
V5.3+BR+EDR+BLE specification, EDR audio product. The earphone uses AC7006F4
as its main chip.The chip contain:power and charge unit,I/O uint,bluertooth
5.3 RF uint,audio,key,Led,SPK1,SPK2,Crystal Oscillation，Dual mic uint，The
earphone uses two LEDs. Their state Indicates the earpone working state.
Long press power key for 3 seconds（Figure 1）
And the LED blue light red light flashing alternately （Figure 2）
equipment is searchable and pairing state.Turn on bluetooth in smartphone search bluetooth devices,click NC3 on the screen（Figure 3）
the LED red light blue light go out ,paired and ready to use. （Figure 4）
Human Body Mode ±4KV.
Standard：Compliant with Bluetooth V5.3+BR+EDR+BLE specification；
Meet class2 and class3 transmitting power
Requirement；Support GFSK and DQPSK all packet types；
Provides maximum +10dbm transmitting power；
EDR receiver with minimum -94dBm sensitivity；
Fast AGC for enhanced dynamic range
Supports：
a2dp\avctp\avdtp\avrcp\hfp\spp\smp\att\gap\
gatt\rfcomm\sdp\l2cap profile
a2dp 1.3.2\avctp 1.4\avdtp 1.3\ avrcp 1.6.2\
hfp 1.8 \spp 1.2\rfcomm 1.1\pnp 1.3\
hid 1.1.1\sdp core5.3\l2cap core 5.3
Operation Frequency: 2402MHz to 2483.5MHz
Bluetooth receiving sensitivity: -94dBm@GFSK, -94dBm@π/4 DQPSK,
-94dBm@8DPSK modulation
Antenna GAIN: 1.9dBi
Temperature Range: -40℃ to +85℃
FCC Statement
This equipment has been tested and found to comply with the limits for a Class
B digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. 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.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
Caution: Any changes or modifications to this device not explicitly
approved by manufacturer could void your authority to operate this equipment.
This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
RF Exposure Information
The device has been evaluated to meet general RF exposure requirement. The
device can be used in portable exposure condition without restriction.