Maxon SD-274 User Manual Download | Manualshive

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Summary of Contents for SD-274

Page 1: ...SD 270 Series Data Radio User Manual January 2017...

Page 2: ...thesized 5 watt FM transceiver module which is designed for data transmission and voice communication It can support pre emphasis squelch CTCSS DCS and audio amplifier Two point modulation technology...

Page 3: ...grammable via PC 6 Levels POCSAG Modulation Optional PC Programmable Software Tune Calibration Applications Industrial telemetry wireless remote control or Paging system Gas and oil flow monitoring El...

Page 4: ...ber of Channels 16 Nominal Working Voltage 12V DC Extreme Working Voltage 9 6 V 16V DC Storage Temperature 40 80 Operating Temperature 30 65 Current Consumption Standby 100mA 65 mA 12V Transmit 5 watt...

Page 5: ...Power 25KHz Channel Spacing 70dBc 12 5KHz Channel Spacing 65dBc Conducted Spurious Emission 1GHz 36dBm 1GHz 30dBm Modulation Sensitivity Voice 8 15mV Data 80 130mV TX SNR 25KHz Channel Spacing 45dB 1...

Page 6: ...Conducted Spurious Emission 57dBm Receiving Audio Distortion 5 RX SNR 25KHz Channel Spacing 45dB 12 5KHz Channel Spacing 40dB Audio Output Power 0 5W 8 load Exterior View Description of radio compone...

Page 7: ...iation is 250 50mV This line has an internal pull up resistor to 5V PTT 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 B 9 6 16...

Page 8: ...when delivery CD_OUT MODEM Logical level output to indicated whether a carrier or not Low lever for carrier high level for no carrier NC No connection GND Ground NC No connection Antenna installation...

Page 9: ...D 270 can be programmed to set CTCSS DCS code When enabled receiver can only receive RF signal with the same CTCSS DCS code of the transmitter to avoid interference from unwanted signals For fast lock...

Page 10: ...TX Protection This feature when enabled limits the amount of time that the radio can continuously transmit for protecting the radio from block of the channel and damage on radio which is caused by sus...

Page 11: ...e programming Not recommended when using for data transmission Side Tone This feature when enabled transmits the MIC signal via the output from SPK port to allow user to hear his or her own voice The...

Page 12: ...Baud Rate bps Narrow 12 5KHz 1200 1200 Wide 25KHz 1200 1200 Available Baud rate for GMSK modem Channel Space DTE Baud Rate bps Modem Baud Rate bps Narrow 12 5KHz 9600 9600 Wide 25KHz 9600 9600 Availa...

Page 13: ...so capable of high speed wireless data transmission between two or more devices AT Command of Modem Only for GMSK or 4FSK Mode Command Return Remark Querying radio channel AT CHN r r nCHN N r n The ra...

Page 14: ...13...

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