FRIENDCOM FC-302 U2 Manual de usuario
Shenzhen Friendcom Technology Development Co., Ltd.
FC-302 U2
User Manual
Address: 6/F,17 Building, Guangqian Industrial Park, Longzhu Road, Xili Town, Nanshan
Shenzhen, China
Tel: +86-755-86026600 +86-755-23230518
Fax: +86-755-86026300
Website: http://www.friendcom.cn
SHENZHEN FRIENDCOM TECHNOLOGY DEVELOPMENT CO.,LTD
Content
1Product Description ......................................................................................................................................... 3
2 Technical Specifications................................................................................................................................... 4
3 Interfaces of the Radio.................................................................................................................................... 5
4 Application Instruction.................................................................................................................................... 6
4.1 Hardware Installation........................................................................................................................... 6
4.2 Operation Instruction ........................................................................................................................... 8
5 Maintenance and Repair ............................................................................................................................... 16
5.1 Dimensions........................................................................................................................................... 16
5.2 Removing & Replacing the Upper Cover.......................................................................................... 17
5.3 Removing & Replacing the Power Board & Bridge Board &Shield Plate..................................... 17
5.4 Removing & Replacing the Main Board........................................................................................... 18
5.5 Repairable/Replaceable Parts List..................................................................................................... 19
6 Accessories Available...................................................................................................................................... 20
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1Product Description
FC-302 U2 is a synthesized 5-watt FM transceiver module, which is designed for voice communication.
For the voice communication, it can support selected pre-emphasis, squelch and audio amplifier. The radio is
PLL (Phase Lock Loop Synthesizer) /microprocessor controlled. The application of two-point modulation with
good low-frequency response in the radio also makes it a competitive choice for audio applications. Compact
dimension and wide range DC support make it flexible to use.
Features:
• CE, FCC& AS/NZS 4295: 2004 certified
• Programmable 16 channels with Dip-Switch
• Configurable power save feature
• Optional external channel configuration
• CTCSS/DCS
• Fast start-up time: 5ms
• SQ programmable via PC
• Pocsag Modulation
• PC programmable & Software tune & Calibration
Applications:
• Industrial telemetry & wireless remote control
• Gas and oil flow monitoring
• Electricity, water and gas utilities
• Earthquake, weather, environmental protection and urban lighting control
• Vehicle tracking and asset tracking systems
• Water monitoring, waste water management and irrigation control
• Railway, police, army automation system
• Aerial defense and fire alarm system
• Wireless Paging system
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2 Technical Specifications
General Specification
Working Frequency 450MHz～490MHz
Channel Spacing 6.25KHz/12.5KHz Programmable
Modulation Type FM
Number of Channels 16
Nominal Working Voltage 12V DC
Extreme Working Voltage 9.5 V～16V DC
Storage Temperature -40℃～+80℃
Operating Temperature -30℃～+65℃
Current
Consumption
Standby ＜100mA
Transmit 5 watts RF Power ＜1.5A
Transmit 1 watt RF Power ＜1A
TX to RX Attack Time ＜5ms
RX to TX attack time ＜5ms
Frequency Error ＜2.5ppm
Antenna Connector BNC 50Ω
External interface DB15/DB9(optional male interface)
Transmitter Specification
RF Power 6.25KHz Channel Spacing 1W/2W Programmable
12.5KHz Channel Spacing 1W/2W/3W/4W/5W Programmable
Frequency
Deviation
6.25KHz Channel Spacing ＜1.25KHz
12.5KHz Channel Spacing ＜2.5KHz
Subsonic 0.5KHz
Adjacent
Channel
Power
6.25KHz Channel Spacing ＜-60dBc
12.5KHz Channel Spacing ＜-70dBc
Conducted Spurious Emission
＜1GHz,＜-36dBm
＞1GHz,＜-30dBm
Modulation
Sensitivity
Vo i c e 8 ~ 1 5 m V
Data 80~130mV
TX SNR
6.25KHz Channel Spacing ＞30dB
12.5KHz Channel Spacing ＞40dB
Receiver Specification
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RX Sensitivity (12dB SINAD) ＜-119dBm Extreme＜-115dBm
ACS ＞70dB
Image Rejection ＞70dB
IF Rejection ＞70dB
Spurious Rejection ＞70dB
Intermodulation Suppression ＞65dB
Conducted Spurious Emission ＜-57dBm
Receiving Audio Distortion ＜5%
RX SNR
6.25KHz Channel Spacing ＞30dB
12.5KHz Channel Spacing ＞40dB
Audio Output Power 0.5W @ 8Ωload
3 Interfaces of the Radio
DB-9 and DB-15 are our basic interfaces of FC-302 U2 radio as shown in below pictures.
StandardDB9interface StandardDB15interface
Standard DB9 and Standard DB15 is only used for voice transmission. The Pin definition of DB9 is the same
with definition of Pin1～Pin9 on DB 15. Pin 10～Pin15 on DB15 is used for extending the optional function of
the channel meanwhile bringing out the hardware serial port. The pin definition is shown in Table 2.
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Table 2
Pin Name Pin No.
On DB9
Pin No. on
DB15 Description Remark
AUDIO_IN
(MOD IN)
1 1
Audio input. 3Khz LPF; Modulation
sensitivity is 100mW
AUDIO_IN is effective only when
PIN 7(MIC) is vacant or with +5V
high level. 3KHz LPF filter existed
in audio channel.
AUDIO_OUT
(AF OUT)
2 2
Audio output; 3Khz LPF; Output level at
60% frequency deviation is 100±30mV. This
line has an internal pull-up resistor to +5V.
PTT 3 3
TX control，active low, only when PTT is
active AUDIO_IN and MIC IN are effective.
This line has an internal pull-up to 5V.
GND 4 4
Ground
B+(9.6～16V
DC)
5 5
Positive pole input from DC power; +12V
BUSY 6 6
Logical level output to indicated whether a
carrier or not. Low lever = carrier , high
level=no carrier. This line has a pull-up to
+5V.
Also able to work as simulated
serial port for parameter setting.
MIC IN 7 7
Microphones input. Can directly connect to electrets
MIC, the DC voltage of this pin
should lower than 3.5V, then MIC
transmission can be activated.
SWITCH 8 8
Control output, 5V high level output when
active
Also able to work as simulated
serial port for parameter setting.
SPK 9 9
Audio output from the audio amplifier, @ 8ΩSPK is effective when Pin 7
connect to MIC or GND,（MIC PIN
power than 3.5V
TXD
（Radio）
- 10
The serial data is output from this pin, used
for radio parameter setting，5V TTL
Signal is output from radio.
RXD
（Radio）
- 11
The serial data is input to this pin, used for
radio parameter setting，5V TTL
Signal is input into radio
CH1 - 12
Select channel by Dip switch; the low bit of
4-bit binary code.
Available when channel control
mode is programmed as “by Dip
switch”
CH2 - 13
Select channel by Dip switch; the second bit
of 4-bit binary code.
CH3 - 14
Select channel by Dip switch; the third bit of
4-bit binary code.
CH4 - 15
Select channel by Dip switch; the forth bit of
4-bit binary code.
4 Application Instruction
Functions of PC Personal Computer) software, hereafter called “FC-302 QuickSet v0.1.12 ”, will be illustrated.
Main goal of this instruction is to save time for user by supporting exact usage of the software, at the same time,
give a help to user who wants to utilize the radio for another applications. This programming software enables
the various parameters of FC-302 to be read, modified, programmed and printed.
4.1 Hardware Installation
To apply PC software to radio application, FC-302 QuickSet En v0.1.12, programming cable, programming kit
and PC are needed. In this chapter, instruction for connection of the equipment will be illustrated.
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4.1.1 System Requirements
Computer
Normal personal computer or faster (recommended)
Operating System
Microsoft Windows XP & Windows 7
Communication Port
One available communication port (COM1, 2, 3 or others)
Hardware Accessories
Programming cable(RS232 to USB)
Programming kit
4.1.2 Connecting
Connection between the PC and the radio for parameter setting
The programming kit is used for connection as shown below.
No. Descriptions
1 DB15 connector, Connected radio with the programming kit
2 Power Supply (DC 12V)
3 DB 9 connector, Reserved for DB9 interface of the radio
4 RS232 Interface, Connected to PC via RS232 serial cable or RS232 to USB cable
The position of the jumper:
For radio’s parameter setting, user should put the jumper on the position shown as below.
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4.2 Operation Instruction
Detailed instruction for channel and system configuration is described. Especially, in input channel signal,
signal input method for Rx,Tx frequency, Rx,Tx option such as CTCSS, DCS, scan and bandwidth is explained
specifically. In addition, system option such as selection of squelch type, data value setting for power saving
mode, Tx time out time, scan option is detailed.
4.2.1 Overall View
Pin 6 (BUSY) and Pin 8 (Switch) of DB15 connector work as TX end and RX end of simulated serial port in
the first 2 minutes after the radio power on. The CON port is with characteristics of 9600bps, 8N1, TTL. If no
valid command is sent from PC, the port will be disabled from serial simulation function and return to normal
BUSY and Switch function.
Initially, click on the shortcut of PC software and then the following window shows up.
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First of all, open the con port. The CON port is with characteristics of 9600bps, 8N1 and click “Open” as
picture shows.
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If user puts mouse cursor on the each icon in tool bar for a second, message for function indication is displayed.
Power on the radio, after 5 seconds, click on the "Read", establish the communication with PC and radio. As
the following picture:
Warning: 1. If there is no read or write operations in first 30 seconds after the radio is powered up or
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