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RITRON, INC.

PRELIMINARY 07-12

RITRON MODELS DTX-X60 SERIES

PROGRAMMABLE

FM TRANSCEIVER MODULES

OPERATING MANUAL

PRELIMINARY!

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Содержание DTX- 60 Series

Страница 1: ...RITRON INC PRELIMINARY 07 12 RITRON MODELS DTX X60 SERIES PROGRAMMABLE FM TRANSCEIVER MODULES OPERATING MANUAL PRELIMINARY...

Страница 2: ...TIONS 2 MODELS DTX 154 AND DTX 454 SPECIFICATIONS 2 1 GENERAL 2 2 TRANSMITTER 2 3 RECEIVER 3 DTX 154 454 INPUT OUTPUT CONNECTOR 4 ACCESSORIES 5 OPERATION 5 1 CHANNEL SELECTION 5 2 POWER SUPPLY VOLTAGE...

Страница 3: ...ntegrators 1 2 MODEL IDENTIFICATION The part number system for the DTX Plus module is as follows The module has a part number in the form of DTX A54 BCDEF Where A is the major frequency band designato...

Страница 4: ...e limits specified by the station license This includes checking the transmitter frequency and deviation periodically using appropriate methods Note also that wideband operation 25 30 kHz channel band...

Страница 5: ...ergy exposure limits for mobile 2 way radios before they can be marketed in the U S When 2 way radios are used as a consequence of employment the FCC requires users to be fully aware of and able to co...

Страница 6: ...10 watts 7 2 inches 18 2 cm Antennas Install antennas taking into account the recommended minimum lateral distances in Table 1 These antenna installation guidelines are limited to antennas with approp...

Страница 7: ...0 C 470 490 MHz DTX 460 T 490 512 MHz Number of Channels 8 Transmit Receive Spacing Up to the span of the sub band Mode of Operation Simplex or Half Duplex Frequency Control PLL Synthesizer Channel In...

Страница 8: ...sewhere in manual RF Load Impedance 50 ohms Modulation Distortion per TIA EIA 603 5 max Modulation Frequency Response 1 3 dB ref 1 kHz Narrowband versions w pre emphasis 400 Hz to 2500 Hz w o pre emph...

Страница 9: ...ration 40 dB min Narrow channel 12 5 15 kHz operation 45 dB min Conducted Spurious 57 dBm max Receive Attack Time transmit to receive 10 ms max Carrier Detect Attack Time 5 ms max Audio Distortion 5 m...

Страница 10: ...de 5 CSN High Low Power or Channel 1 2 6 RAW SUPPLY Power Supply Input Positive Supply voltage input 7 AUX IN Auxiliary Input Wideband input for data 8 AUX OUT Auxiliary Output Wideband output for dat...

Страница 11: ...ing upon how it is programmed this input selects between channels 1 and 2 or between high and low RF output power This input is TTL CMOS level type input with a logic low required for channel 1 low po...

Страница 12: ...al not strong enough to break squelch is present Input levels are TTL CMOS polarity may be programmed Internal 10 k pull up to 5 volts 12 AUDIO OUT This is the output of the audio power amplifier This...

Страница 13: ...ios via compatible computer is model DTXP PCKT It includes 1 Programming software diskettes 3 5 qty 2 2 1 25 pin PC to 6 pin modular adapter cable with built in interface circuitry 3 1 modular adapter...

Страница 14: ...2 POWER SUPPLY VOLTAGE Pin 6 is the positive supply input to the unit The type of module determines the actual voltage that should be applied to this pin One should be absolutely sure of the proper vo...

Страница 15: ...t as low as 1 watt and the module is certified as low as 1 watt operation below 2 5 watts output power is not recommended At low power levels the output power can vary by 50 or more with variations in...

Страница 16: ...duty cycle and the maximum continuous transmitter on time exist These limits are summarized below for operation in still air Ambient Temperature C Duty Cycle Key Down Time s 3 watts RF output 25 30 4...

Страница 17: ...an drive 8 ohm speaker type loads 5 5 2 TRANSMIT PTT Operation The transmitter is activated by placing the PTT RTS Push To Talk Request To Send input in its asserted state This state is programmable I...

Страница 18: ...miter filter The modulation limiter would still be in place but the deviation of the DTX module could be set such that the modulation limit within the DTX module is never reached The deviation would b...

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