A,Product features:

1: using advanced digital audio signal processing (DSP) and FM phase-locked loop (PLL) modulation technology in sound quality, and the more vivid, more stable performance, long working frequency offset.

2: LCD display is more intuitive and accurate, and has very low power consumption and tiny noise interference.

3: built-in digital volume adjustment level 30, keystrokes can be easily done.

4: electric power automatic memory before the data

5: multichannel audio input switch automatically

6: using quartz crystal frequency stabilization, temperature change no longer transmit frequency drift

7: support serial command control

Second,Product parameters:

Output power: 100 mw

Frequently ring tone range: 50 hz - 18 KHZ

Transmission frequency:

Close the campus radio87.0 MHz to 108.0 MHz, open the campus broadcast76.0 MHz to 108.0 MHz

Frequency adjust step: 0.1 MHz/short (button press), 1.0 MHz/(button press)

FM modulation mode: standards

Track: LINE/USB channel (stereo), MIC channel (mono)

The equivalent noise: 30 db (orThe sound quality close to CD quality)

The power supply voltage: 3.0 V to 5.0 V dc

The working current 35 ma

Telescopic antenna transmitting antenna: 75 cm

Launch distance: FM 75 cm standard telescopic antenna launch module, the radiodeshengPL - 660., open test coverage radius of 100 meters.(note: launch distance are for reference only, because of using the environment different slightly different)

Three,Directions for use:

< 1="">

Module corresponding port -, +, respectively, to connect power (battery) cathode and anode, power battery or other regulated power supply.Cannot be used without a filter of switching power supply (such as mobile phone chargers, and other inferior switch power supply), or the power interference will affect the normal work of the module.This module is normal working voltage of 3.0-5.0 V, the power supply voltage pay attention not to exceed the range.

< 2="">

The volume + / - : short press the volume + / - 1, long press + / - in a row

Frequency of + / - :Short according to the volume + / - 0.1 MHZ frequency, long press for + / - 1 MHZ

Mute: short press the switch mute/not mute

< 3="">

ANT ports used to connect FM antenna, in order to betterlaunchFM signals, it is suggested that external 75 cm length rod antenna, and no obstacles block near the antenna as far as possible.

< 4="">

If you need the module of USB audio broadcast function, you will need to plug in USB cable to connect the computer.USB port and ordinary phone compatibility, it can use a mobile phone USB cable connection module and a computer.Because of computer USB with 5 v output, so using a USB connection of computer can directly with a USB port supplies power for the module.After connected to the computer USB, this module will automatically into PC audio broadcasting mode, the LCD screen will display the PC, PC will automatically install the driver, and give a name to this module "CD002" sound equipment, in computer voice Settings enabled and enabled the "CD002" audio equipment, computer audio can be launched by means of this module is to FM radio, near the radio frequency to adjust to, and this module launch frequency is consistent can hear this module of PC audio system.

< 5="">

If you need this module LINE (LINE in) channel as a source of sound emission, is only the audio LINE end in this module 3.5 mm audio jack, the other end of the insert your audio device (such as mobile phone headset hole), the module automatically switch to the launch of the audio source LINE channel as FM.Near FM radio just adjust to this module and transmitting frequency can hear the audio from the phone.

< 6="">

If you need this MIC as a source of sound emission module, only need to remove the LINE LINE and USB LINE (LINE and USB connection), module automatically turn to MIC channel as the source of FM, this module with high sensitivity electret microphone, can according to needs to be applied in the wireless microphone, maternal and child care, etc.Pay attention to adjusting the module when using emission volume preferred pickup.

< 7="">This part (no serial port control function does not need to pipe)

Modules provide TTL level serial port control interface, TTL serial port with this module, communication module to connect, UART_RX and UART_TX GND, can use external MCU (microcontroller) or computer serial port to send command control module of related functions.Note: due to the computer serial port level not TTL level, the need to connect the computer communication RS323 level turns TTL electrical paperback in device or use USB to TTL level serial interface module to commune with the module.For a serial port command control module need professional computer knowledge, don't understand buyers need not.See baby show all of your data, customer does not provide the technical guidance.

User-defined Settings:

1: backlight LED mode Settings

Power stateLong press on at the same time, the radio button boot, display backlight normally on B1, B0 says backlit 20 seconds to shut down,restartAfter setting upTo take effect.(the factory default Settings for the backlight 20 seconds delay closed).

2: open/close the campus broadcast band

Long press VOL + power condition, VOL - a key to electricity boot C1 LCD display indicates the open after the campus broadcast C0 said closed campus radio frequencies, Settings to take effect after reboot.(the factory default Settings for the closed campus radio frequencies).

3: stereo/mono mode setting

Modules are the two solder M, G, short for mono system launch, between two points on two points for stereo system launch.(factory default to stereo system launch).Note: under the stereo system must satisfy the input to the module of sound source is the stereo and the radio is stereo will reach the stereo effect.(don't use a single horn (mono) radio or audio signal input to the module for mono said I don't see any stereo effect!!!).

Five, the matters needing attention:

1: the power supply voltage do not more than the module of the power supply voltage range.

2: can't touch the back of the module components at work, so as not to affect the normal work of the module or cause a short-circuit burned module.

Vi.The user Settings:

This module can be set according to customer's specific usage backlight whether state and listen to the campus radio frequencies, setting method is as follows.Long press VOL + power condition, VOL - a key to electricity boot C1 LCD display indicates the open after the campus broadcast C0 said closed campus radio frequencies, Settings to take effect after reboot.Sets a backlight status isPower stateLong press on at the same time, the radio button boot, display backlight normally on B1, B0 says backlit 20 seconds to shut down,restartAfter setting upTo take effect.Change the state of repeat this step to switch.The factory unified set to don't open the campus radio frequencies, backlit without operation for 20 seconds out.

Seven,Before purchase:

1: this shop all commodities exchange unconditional offer 7 days service, if you receive the goods are not satisfied can apply for return.Return need buyers bear the return postage, we do not accept a replacement freight collect shipments!

2: this module is installed components of circuit board, need to connect the line to work for.Need buyers have certain knowledge of electronic operation.For a little bit don't understand the buyers of electronic technology, it is not recommended to buy this module!

3: our goods only provides limited technical support, please see clear instructions before use.

4: due to express all kinds of collision in the process of transportation, although we have test each product before shipment good sent to you again, done seismic processing and packaging, but also inevitably individual package "internal injuries".When receiving, please check the parcel in front of the Courier, the loss of the goods is complete without any damage, etc.After confirmed receipt!(see face to face to sign for notice after)

  This module is loaded components of circuit boards, buyers need to have some knowledge of electronic operation.Please buyers see baby, don't understand place to ask first to determine your ability to operate again to buy, for a little bit don't understand the buyers of electronic technology, it is not recommended to buy this module!In order to avoid bad blame over there is something wrong with the baby!Thank you for your cooperation!

Below is through the computer serial port control data in this module are:

(because of computer professional knowledge, to do not understand the buyer needed to pay attention to the following part, the key to operation module can be used directly.

A serial port example demonstration and configuration:

Example:PCA serial port assistant sendThe AT + FRE = 875(set the receive frequency87.5 MHZReturns the current frequency), moduleMAC = 875As follows.

Note: because of considering the streamline data, the frequency of input and output are ignore the decimal point.

 FMlaunchThe moduleATinstruction

Baud rate:38400 TTLlevel