Friendcom FC-302 Data Radio User Manual
Shenzhen Friendcom Technology Development UU3FC302U2D is a synthesized 5-watt FM transceiver module, which is designed for data transportation and voice communication. It can support selected pre-emphasis, squelch and audio amplifier for the voice communication.
The radio is PLL(Phase Lock Loop Synthesizer) /microprocessor controlled with optional GMSK modem.
The application of two-point modulation with good low-frequency response in the radio also makes it a competitive choice for 9600bps rate data application. Compact dimension and wide range DC support make it flexible to use.
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Shenzhen Friendcom Technology Development Co., Ltd.
FC-302 Data Radio
User Manual
Address: 6/F,17 Building, Guangqian Industrial Park, Longzhu Road, Xili Town, Nanshan
Shenzhen, China
Tel:
Fax:
+86-755-86026600 +86-755-23230518
+86-755-86026300
E-mail: [email protected]
Website: http://www.friendcom.cn
SHENZHEN FRIENDCOM TECHNOLOGY DEVELOPMENT CO.,LTD
Shenzhen Friendcom Technology Development Co., Ltd.
Content
1 Product Description.................................................................................................................................................2
2 Technical Specifications......................................................................................................................................... 3
3 Interfaces of the Radio........................................................................................................................................... 4
3.1 Interface for Voice Transmission.................................................................................................................6
3.2 Interface for data transmission.....................................................................................................................7
3.3 Modem Option for Data Communication....................................................................................................7
4 Application Instruction............................................................................................................................................8
4.1 Hardware Installation...................................................................................................................................8
4.2 Operation Instruction................................................................................................................................. 10
5 Maintenance and Repair........................................................................................................................................18
5.1 Dimensions.................................................................................................................................................18
5.2 Removing & Replacing the Upper Cover..................................................................................................19
5.3 Removing & Replacing the Power Board & Modem Board & Shield Plate............................................ 19
5.4 Removing & Replacing the Main Board................................................................................................... 20
5.5 Repairable/Replaceable Parts List............................................................................................................. 21
6 Accessories Available........................................................................................................................................... 22
Appendix:................................................................................................................................................................. 23
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Shenzhen Friendcom Technology Development Co., Ltd.
1 Product Description
FC-302 is a synthesized 5-watt FM transceiver module, which is designed for data transportation and 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 with optional GMSK modem.
The application of two-point modulation with good low-frequency response in the radio also makes it a competitive choice for 9600bps rate data application. 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
FM&
GMSK modem option
• 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
Channel Spacing
Modulation Type
Number of Channels
Nominal Working Voltage
Extreme Working Voltage
450MHz ~ 490MHz
6.25KHz/12.5KHz Programmable
FM, GMSK
16
12V DC
9.5 V ~ 16V DC
Storage Temperature
Operating Temperature
Standby
Current
Consumption
Transmit 5 watts RF Power
-40 ℃~ +80 ℃
-30
<
<
℃~
100mA
1.5A
Transmit 1 watt RF Power < 1A
+65 ℃
TX to RX Attack Time < 5ms
< 5ms RX to TX attack time
Frequency Error
Antenna Connector
External interface
< 2.5ppm
BNC 50Ω
DB15(optional male interface)
Transmitter Specification
6.25KHz Channel Spacing 1W/2W Programmable
RF Power
12.5KHz Channel Spacing 1W/2W/3W/4W/5W Programmable
6.25KHz Channel Spacing < 1.25KHz
Frequency
Deviation
12.5KHz Channel Spacing < 2.5KHz
Subsonic 0.5KHz
Adjacent
Channel
Power
6.25KHz Channel Spacing
12.5KHz Channel Spacing
<
<
-60dBc
-70dBc
< 1GHz, < -36dBm
Conducted Spurious Emission
> 1GHz, < -30dBm
Modulation
Sensitivity
TX SNR
Voice
Data
8~15mV
80~130mV
6.25KHz Channel Spacing > 30dB
12.5KHz Channel Spacing > 40dB
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Receiver Specification
RX Sensitivity (12dB SINAD) < -119dBm Extreme < -115dBm
ACS
Image Rejection
> 70dB
> 70dB
IF Rejection
Spurious Rejection
Intermodulation Suppression
Conducted Spurious Emission
Receiving Audio Distortion
> 70dB
> 70dB
> 65dB
< -57dBm
< 5%
6.25KHz Channel Spacing > 30dB
RX SNR
12.5KHz Channel Spacing > 40dB
Audio Output Power 0.5W @ 8Ωload
3 Interfaces
of
the Radio
DB-15 are our basic interfaces of FC-302 radio.
DB15 have two kinds of Pin definition, standard interface and data transmission interface. We provide three kinds of interfaces for each requirement in all.
Standard DB15 interface
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Data transmission DB15 interface
As shown in above picture, the pin definition of CON-14-FEMALE is related with internal devices
(Modem board or Bridge board). Refer to Table 1.
Table 1
CON-14-PIN1
CON-14-PIN2
CON-14-PIN3
Internal bridge
TFSK
RXD(RADIO)
EXT_PTT
Internal modem
GND
RXD(MODEM)
EXT_PTT
CON-14-PIN4
CON-14-PIN5
CON-14-PIN12
CON-14-PIN14
TXD(RADIO)
RFSK
GND
NC
TXD(MODEM)
CD_OUT
GND
+12V ( B+/9.6
~ 16V DC )
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3.1 Interface for Voice Transmission
Standard DB15 is only used for voice transmission.
Pin 10 ~ Pin15 on DB15 is used for extending the optional function of the channel meanwhile bring out the hardware serial port. The pin definition is shown in Table 2.
Table 2
Pin No. on
Pin Name Description Remark
DB15
AUDIO_IN
(MOD IN)
AUDIO_OUT
(AF OUT)
1
2
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.
PTT
GND
3
4
Audio output; 3Khz LPF; Output level at
60% frequency deviation is 100 ± 30mV. This line has an internal pull-up resistor to +5V.
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.
Ground
B+(9.6
~ 16V
DC)
BUSY
5
6
Positive pole input from DC power; +12V
MIC IN
SWITCH
SPK
TXD
( Radio )
RXD
( Radio )
CH1
CH2
CH3
CH4
7
8
9
10
11
12
13
14
15
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.
Microphones input.
Also able to work as simulated serial and data transmission port.
Control output, 5V high level output when active
Can directly connect to electrets
MIC, the DC voltage of this pin should lower than 3.5V, then MIC transmission can be activated.
Audio output from the audio amplifier, @ 8Ω SPK is effective when Pin 7 connect to MIC or GND, ( MIC PIN power than 3.5V
The serial data is output from this pin, used for radio parameter setting , 5V TTL
The serial data is input to this pin, used for radio parameter setting , 5V TTL
Also able to work as simulated serial and data transmission port.
Data is output from radio.
Data is input into radio
Select channel by Dip switch; the low bit of
4-bit binary code.
Select channel by Dip switch; the second bit of 4-bit binary code.
Select channel by Dip switch; the third bit of
4-bit binary code.
Select channel by Dip switch; the forth bit of
4-bit binary code.
Available when channel control mode is programmed as “by Dip switch”
Shenzhen Friendcom Technology Development Co., Ltd.
3.2 Interface for data transmission
As to FC-302 with internal modem, the pin definition is shown in Table 3.
Table 3
Pin No.
Decription Pin Name
AUDIO_IN
( MOD IN )
1
Remark
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 )
PTT
GND
2
3
4
Audio input. 3Khz LPF, Modulation sensitivity is 100mW
Audio output, 3Khz LPF. Output level at
60% frequency deviation is 100±30mV.
This line has an internal pull-up resistor to +5V.
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.
Ground
B+(9.6
~ 16V
DC)
BUSY
MIC IN
5
6
7
Positive pole input from DC power; nominal +12V
Logical level output to indicated whether there is a carrier or not. Low lever = carrier , high level=no carrier. This line has a pull-up to +5V.
Microphones input.
Also able to work as simulated serial and data transmission port.
SWITCH
SPK
8
9
Control output; 5V high level output when active
Audio output from the audio amplifier, @
8Ω
Can directly connect to electrets MIC, the DC voltage of this pin should lower than 3.5V, then
MIC transmission can be activated.
Also able to work as simulated serial and data transmission port.
AUDIO_IN is effective only when PIN 7(MIC) is vacant or with +5V high level. 3KHz LPF filter existed in audio channel.
GND 10 Power ground for modem
RXD
( Modem )
11 The serial data is input to modem through this pin. Default is RS232.
The hardware is one of RS232, RS485 or
TTL/5V when delivery.
EX_PTT
TXD
( Modem )
CD_OUT
12
13
14
Data transmision control. Actice at low level
Serial data is output from modem via this pin. Default is RS232.
EX_PTT is valid with installed modems below:
FC-302-GMSK,
The hardware is one of RS232, RS485 or
TTL/5V when delivery.
Logical level output to indicated whether a carrier or not. Low lever = carrier , high level=no carrier.
Note: do not change the level to low unless the internal modem needs.
NC 15
3.3 Modem Option for Data Communication
GMSK high speed modem are applied to the FC-302 data radio to increase capability for data application. The goal of an internal modem is to improve the efficiency for data transmission and provide maximum flexibility for user application.
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Interface level Y
FC-302-GMSK modem
3.3.1 Modem specifications
Items
Power supply
Serial data rate (bps)
Symbol Frequency
KHz
Air data rate (bps)
Serial port updating
Interaction with radio mainboard
GMSK
DC 12V
9600
4800
9600
Y
Y
AT command Y
Remark
Symbol frequency is 2400 when the data rate is 9600bps
Program the radio’s parameters by modem via AT command
Refer to the Appendix
Hardware jumper resistor, support R
S485/RS232/TTL, Factory default is
RS232
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.
4.1.1 System Requirements
Computer
Normal personal computer or faster (recommended)
Operating System
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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 to Data Radio
Connection between the PC and the radio for parameter setting
The programming kit is used for connection as shown below.
No.
1
2
3
Descriptions
DB15 connector, Connected radio with the programming kit
Power Supply (DC 12V)
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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For data transmission test with GMSK modem, the jumper’s position need to be changed shown as below.
4.2 Operation Instruction
Detailed instruction for channel and system configuration is described. Especially, in input channel data, data 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 and modem speed 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 for data transmission 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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within 120 seconds after last operation, user should restart the radio for setting.
2. The BUSY signal, SWITCH and CTCSS/DCS will only be available after 2 minutes when user finish programming setting
4.2.2 Input Channel Data
In this option part, user can input channel selection from 1 to 16, Rx,Tx frequency, Rx,Tx tone option such as
CTCSS, DCS, power, switch and make SCAN list, and choose bandwidth, Narrow or Wide according to each channel.
Fig. 4 Feature Column
Double-click on the any window inside red-rectangle area to set Rx,Tx frequency, Rx, Tx option for each channel.
4.2.2.1 Power
1-5 output power can be programmable for each channel.
4.2.2.2 Bandwidth
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User can decide the channel spacing in this feature with optional 6.25KHz (Narrow) or 12.5KHz (Wide) channel spacing.
4.2.2.3 SQ level
Five SQ levels can be select in our radio.
Level 0 is for fully open mute.
The audio signal will continuously transmit. Other levels with corresponding strength are shown as below:
L1: 0.15uV
L2: 0.25uV
L3: 0.35uV
L4: 0.45uV
L5: 0.55uV
4.2.2.4 CTCSS/DCS and Switch
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CTCSS/DCS
User can encode tones with CTCSS/DCS according to options shown in the picture. The feature is not available for high speed data transmission.
Switch
When we use radio remote: the Switch function can be use to change a logic from +5V to 0V minimum.
The judging condition is long period of 260Hz, sine wave 300 Ms.
4.2.2.5 Scan
This feature allow user to decide scan mode and establish channel scan list. Radio will start to detect channels and stay on each channel for at least 100ms according to the established scan sequence. If a signal or conversation is detected on any channels in scan list, the radio will stop on that channel and you will monitor the signal or hear the conversation. When the signal or conversation is disappeared, the radio continues to scan.
4.2.3 System Configuration
4.2.3.1 Channel Control Mode
Radio’s channel can be selected by inner Dip(4) switch(HW) or serial command inputted from our PC software(SW). Only in SW control mode, channel can be selected in “Channel” column.
4.4.3.2 Working Channel
In this column, user select current channel for working.
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4.2.3.3 Second Column Features
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4.2.3.3.1 Volts Protection
If the power supply of the radio is lower than low volts, the radio will stop working and only monitor the power supply. Once the power supply become higher than High volts, the radio can start to work again. The recommended Low volt is lower than 9V. The recommend High volt is 13.8V.
4.2.3.3.2 TX Protection
This feature, when enabled, limit the amount of time that user can continuously transmit. The time can be set from 1 second to 60 seconds. When timeout, radio will release PTT pinout. If user want to transmit again, he or she have to wait delay time (set by “stop when timeout”) after the radio released PTT.
4.2.3.3.3 De-emphasis Volume
FC-302 radio output voice via SPK Pin with 9 levels volume. User is able to select appropriate volume for the connected external speaker in this feature.
4.2.3.3.4 Power Save Mode
Here, you can enable Power save mode or disable. When enabled, radio will automatically switch between
Sleep and Standby to lower power consumption. The time of Sleep and Standby can be set in “Power save time”.
However, for supporting fast attack time between TX and RX, the radio will keep in RX mode and the PLL keep working even in power save mode. Only the intermediate frequency circuit is off.
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Power Save Time
When Power save is enable, sleep time can be programmed from 20 to 500 ms in 20ms increment with 1~25 optional values. That means 1 equals to 20 ms, 2 equals to 40ms ....... 25 equal to 500ms
Standby time can also be programmed from 40 to 600 ms in 40ms increment with
1~15 optional values. That means 1 equals to 40ms, 2 equals to 80, ..... 15 equals to 600ms.
4.2.3.3.5 Carrier Detect Busy Signal
This feature is to set active level of BUSY Pin, high or low. The status is transferred to user for the connection with external devices.
4.2.3.4 Third Column Features
4.2.4.4.1 Audio-out
Output wave for Audio-out can be selected as square wave or sin wave.
4.2.4.4.2. Side Tone
When enabled, user can hear his own voice while transmitting voice. The sidetone volume is fixed at level 2 de-emphasis volume.
4.2.4.4.3 RSSI
To detect the air signal strength over the air ;
Unit : dBuv ;
4.2.4.4.4 Modem
Modem with different data rate is provided from low speed (1200/2400/4800 bps) to high speed
(9600bps).
4.2.4.4.5 Channel Scan
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Scan modes are set up in “Option” and shown as below
0 ---------normal scan with carry only
1 ---------normal scan, carry with tone
2 ---------priority scan, carry only
3 ---------priority scan, carry with tone
If normal scan is enabled, radio will scan from initial channel to channel 16 sequentially. If priority scan is enabled, radio will scan the prioritized channel with more times. Prioritized channel is the working channel before the scan. For example, if prioritized channel is CH10 and initial channel is CH8, then the scan sequence is CH8, CH10, CH9, CH10, CH10, CH10, CH11, CH10.....CH16, CH10.
4.2.4.4.6 Others
As mentioned above, the BUSY signal, SWITCH and CTCSS/DCS will only be available after 2 minutes when user finish programming setting. If you click here, user does not need to wait the 2 minutes.
5 Maintenance and Repair
5.1 Dimensions
Fig.17 Top View
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Fig. 18 Exterior View
5.2
Removing & Replacing the Upper Cover
Removing the Upper Cover
1. Unscrew the four upper cover mounting screws located on the upper cover of radio
To replace the Upper Cover
1. Reserve the steps taken to remove the Upper Cover.
Fig. 19-Upper Cover Removal
5.3 Removing & Replacing the Power Board & Modem Board & Shield Plate
Removing the Power Board & Modem Board Assembly & Shield Plate
1 Removing the Upper Cover (refer to Removing & Replacing the Upper Cover )
2 Disconnect the DB15 pin connector on CON14.
3 Unscrew the 4 monting screws.
4 Remove the Main Board Assembly.
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5 Remove the Shield Plate.
To replace the Main board & Power board Assembly:
1. Reserve the steps taken to remove the Main board Assembly & Power board & Shield Plate.
Fig. 20-Power board & Modem board Assembly Removal
Fig. 21-Shield Plate Assembly Removal
5.4 Removing & Replacing the Main Board
1 Remove the Upper Cover (refer to Removing & Replacing the Upper Cover )
2 Remove the Power board, Modem Board & Shield Plate
(refer to Removing the Power board & Modem Board Assembly & Shield Plate)
3 Unscrew the 4 mounting standoffs.
4 Unsolder the antenna connector cable.
5 Remove the Main Board Assembly.
To replace the Main Board Assembly:
1. Reverse the steps taken to remove the Main Board Assembly.
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5.5 Repairable/Replaceable Parts List
Fig. 21-Main Board Removal
Fig. 22 Exploded View
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6 Accessories Available
Please contact the Friendcom sales team for accessory information.
Tel: +86 755 23230544
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Appendix:
Modem debugging Instruction
When the GMKS modem is installed with the radio, users need to calibrate the data deviation.
The center frequency calibration is only necessary when the modem adopts DC coupling.
FC-302-GMSK
VR2 ,
Debug wiring diagram:
Comprehensive tester
DC power supply
PC (personal computer)
Radio
Figure T1: Send the AT command by PC to activate the modem launching 01 code or PN9 code
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Comprehensive tester
DC power supply
Radio
Figure T2: User activate the modem launching 01 code or PN9 code by TRS pin.
Debugging method-1
Connect the devices according to the figure T1 shows. The VFF (Voice Frequency Filter) should be programmed as 20Hz-15KHz. DC power supply provide a voltage of 12V/2A. A serial debugging software sends the AT command to the radio.
Serial port settings : GMSK/9600 modem , 9600, 8N1 。
AT command FC-302-GMSK
AT+TEST=PN9/r send PN9 code
Remark
Used for deviation adjustment of the
GMSK modem
AT+TEST=CODE01/r send code 01
AT+TEST=EXIT/r
AT+WORKMODE=?/r
Quit from test
Data rate query
AT+WORKMODE=M9600/r -----
As for GMSK modem, the radio need to be programmed as AC coupling (Low speed mode) and start to send
PN code. Then user can adjust the frequency deviation to 3.3-3.5KHz by adjusting VR2 and reading the deviation value on comprehensive test instrument.
Note: user can set the parameters of the radio via modem’s external serial port (TXD/RXD) by our
PC software(FC-302 QuickSet En v0.1.11.exe)
The debugging is the same with the GMSK modem. But the sending code is 01.
Debugging method-2
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The second method is easy to conduct. But the channel and coupling mode. The radio should be under wide band channel spacing for frequency deviation calibration.
Debugging :
Connect the devices according to the figure T2, SW (Switch) is connected between the STS (Pin 12) and
GND.
Close the SW in 30 seconds after the radio is powered up. Then the radio starts to transmit. User adjust the frequency deviation to 3.3-3.5KHz by adjusting VR2 and reading the deviation value
Data transmission test
User can test the data transmission performance between two radios by data transmission test tools.
The test should be conducted under high-quality signal (under short distance test). The success rate s hould reach 100%
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Key features
- Optional external channel configuration option
- Fast start-up time: 5ms
- SQ programmable via PC
- FM&GMSK modem
- CTCSS/DCS