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Specifications:
Main Features:
- With RS232&RS485 2 interface,TTL can be set in factory
- Support VHF(136MHZ-174MHZ,220-240MHZ)UHF(410MHZ-470MHZ) frequency programming
- 8km-12km LOS long range transmission distance
- Over-the-air data rate from 1200bps to 4800bps,interface data rate1200-115200bps user programming
- short transmitting-receiving transfer time; communication delay less than 3Ms
- 16 Channels (0CH DIP Switch select and other 15CHs PC software programming)
Pin Definitions
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Pins
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XZ-DT25-MXX
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XZ-DA25-MXX
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Remark
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Arline Male Connector
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1
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Grounding of power supply
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Grounding of power supply
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2
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DC12V power supply
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DC12V power supply
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DC12V±10%
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DB9 Male Connector
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1
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NC
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PTT（Voice Transmitting）
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Active Low
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2
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RS-232/RXD
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RS-232/RXD
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3
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RS-232/TXD
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RS-232/TXD
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4
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NC
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AGND（Analog Signal GND）
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5
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GND
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GND
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6
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RS-485/A
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RS-485/A
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7
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RS-485/B
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RS-485/B
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8
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Setup active
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MIC（MIC Signal Input）
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9
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SQ（Receiving Signal Indicator）
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SP（Speak Output，8Ohm 1W）
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Technical Parameters
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Frequency Range
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136～174MHz, 220～240MHz, 410～470MHz
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Frequency stability
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≤±2.5PPm
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Transmit Power
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5W
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Modulation
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GFSK/4GFSK
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Over-the-air Data Rate
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1200～115200bps
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Serial Data Rate
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1200～115200bps
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Interface
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RS232&RS485
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Power Supply
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12V@10A
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Interface Data Format
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8E1/8N1/801
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Receiving Sensitivity
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-125dBm@1200bps/-120dBm@9600bps
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Channel Bandwidth
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10KHZ@1200bps/25KHZ@9600bps
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Working Temperature
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-40℃～80℃ (industrial grade)
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Working Humidity
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10% to 90% relative humidity, no condensation
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Emission Current
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≤2A(Max Output Current is not less than 3A)
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Receiving Current
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≤80mA
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Dimension(L/W/H)
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86 X 45X 20mm
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Weight(g)
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≤500g
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XZ-DT25-MXX（XZ-DA25-MXX）Frequency
The dialing switch can select the 0~16 channel, frequency of the 1~15 channel is fixed, frequency of the 0 channel can be arbitrarily set and saved by the software. Dial the switch to ON for "1" and dial to OFF for "0", 1 is high-order and 4 is low-order.
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Channel (1234)
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XZ-DT25-M1
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XZ-DT25-M2
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XZ-DT25-M4
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XZ-DA25-M1
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XZ-DA25-M2
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XZ-DA25-M4
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0(0000)
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156.025MHZ
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230.025MHZ
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433.025MHZ
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1(0001)
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140.025MHZ
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221.025MHZ
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410.025MHZ
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2(0010)
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142.025MHZ
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223.025MHZ
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414.025MHZ
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3(0011)
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144.025MHZ
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224.025MHZ
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418.025MHZ
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4(0100)
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146.025MHZ
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225.025MHZ
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422.025MHZ
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5(0101)
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148.025MHZ
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226.025MHZ
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426.025MHZ
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6(0110)
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150.025MHZ
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227.025MHZ
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430.025MHZ
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7(0111)
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152.025MHZ
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228.025MHZ
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434.025MHZ
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8(1000)
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154.025MHZ
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229.025MHZ
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437.025MHZ
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9(1001)
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158.025MHZ
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231.025MHZ
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441.025MHZ
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10(1010)
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160.025MHZ
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232.025MHZ
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445.025MHZ
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11(1011)
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162.025MHZ
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233.025MHZ
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449.025MHZ
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12(1100)
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164.025MHZ
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234.025MHZ
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453.025MHZ
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13(1101)
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166.025MHZ
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235.025MHZ
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457.025MHZ
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14(1110)
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168.025MHZ
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236.025MHZ
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461.025MHZ
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15(1111)
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170.025MHZ
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237.025MHZ
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465.025MHZ
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Software Function Setting
1.1 Enter setup mode
The hardware enters the setup mode: connecting the 8th foot with Ground and the green light of radio is always bright, the radio enters the setup mode, the serial port rate is 9600 8N1.
The software enters the setup mode: at the current baud rate, 3 + numbers are sent continuously, XZ-DT25enters the setup mode, and the serial port output is OK
Format + + +
Return OK
1.2 Channel 0 Frequency Setting(this frequency is the working frequency of 0 channel
Format >WF0/RX:453.25000/TX: 453.25000
Return <Channel_0: RX:453.25000/TX:453.25000
Explain >WF0 means working frequency when writing channel 0
RX: means receiving frequency453.25000 MHz ,please notice frequency needs to be accurate to 5 digits after the decimal point；
TX: means transmitting frequency 453.25000 MHz , please notice frequency needs to be accurate to 5 digits after the decimal point；
The same XZ-DT25 receiving and transmitting frequency settings can be the same or different, but modules in the same communication system must have the same receiving and transmitting frequency then they can communicate. Dip Switch can only set frequency in Channel 0.
1.3 Interface Baud Rate Setting
Format >WBA
Return <Com_Rate:1200
Explain >WB means interface baud rate
A~G means 1200~115200bps；A=1200，B=2400，C=4800，D=9600，E=19200，F=38400,g=115200
1.4 Parity Bits Setting
Format >WVN
Return <Verify:8N1
Explain >WV means Interface Parity Bit
N、E、O means 8N1、8E1、8O1
1.5 Air Baud Rate Setting
Format >WAA
Return <Air_Rate:1200
Explain >WA means Air baud rate
A~G means 1200~115200bps；A=1200，B=2400，C=4800，D=9600，E=19200，F=38400,G=115200
Notice: if air baud rate and interface baud rate are set the same, can transmit data continuously. To transmit longer distance, air baud rate can be set lower, while interface baud rate can be set higher.
1.6 Read all Parameters Command
Format >R
Return <Channel_0: RX:453.25000/TX:453.25000
<Com_Rate:1200
<Air_Rate:1200
<Verify:8N1
Explain Output XZ-DT25 current working parameters
1.7 Exit Setup Mode
Format >WE
Return OK
XZ-DT25 exit setup mode，even if XZ-DT25 enters setup mode it will exit when it does not have any command actions at continuous 60S.
XZ-DT25-MXX Series Model No. Comparison Table
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Model No.
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Over-the-air data rate（bps）
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Serial data rate(bps)
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Frequency(MHZ)
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XZ-DT25-M1E
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1200-4800
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1200-115200
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136-174
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XZ-DT25-M1P
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1200-115200
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1200-115200
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XZ-DT25-M2E
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1200-4800
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1200-115200
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220-240
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XZ-DT25-M2P
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1200-115200
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1200-115200
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XZ-DT25-M4E
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1200-4800
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1200-115200
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410-470
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XZ-DT25-M4P
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1200-115200
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1200-115200
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Remark ：The above models can be added (XZ-DA10-01) to upgrade with voice function, after upgrading, the whole model is called XZ-DA25-HXX. Upgraded radio is with data and half-duplex voice calls function, and voice function is priority.
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