Ritron DTXM II Series User Manual Download Page 1

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Rev. 07/14

RITRON DTXM SERIES II DTXM-X60 FAMILY

PROGRAMMABLE WIRELESS FM

MODEM TRANSCEIVERS

VHF/220 MHz/340-400 MHz/UHF

6.25 kHz/12.5 kHz/25 kHz Channels

Multiple Protocol

Summary of Contents for DTXM II Series

Page 1: ...Rev 07 14 RITRON DTXM SERIES II DTXM X60 FAMILY PROGRAMMABLE WIRELESS FM MODEM TRANSCEIVERS VHF 220 MHz 340 400 MHz UHF 6 25 kHz 12 5 kHz 25 kHz Channels Multiple Protocol...

Page 2: ...X Plus modem includes voice transceiver audio input and outputs The complete modem transceiver is housed in the standard DTX Plus case resulting in a light compact package 1 2 MODEL IDENTIFICATION The...

Page 3: ...ands countries that require an equipment authorization This device has not been authorized as required by the rules of the Federal Communications Commission This device is not and may not be offered f...

Page 4: ...h Voice Not allowed 12 5 kHz channels 10 0 kHz 25 kHz channels 15 0 kHz Data 6 25 kHz channels 4 0 kHz 12 25 kHz channels 8 0 kHz 25 kHz channels 16 0 kHz Frequency Stability 30 C to 60 C 1 0 ppm 30 C...

Page 5: ...12 dB SINAD 0 25 uV max Data 10 3 BER 0 30 uV max Adjacent Channel Selectivity 6 25 kHz channel 50 dB min 12 5 kHz channel 60 dB min 25 kHz channel 70 dB min Spurious and Image Rejection 70 dB min IM...

Page 6: ...EST pin pin 12 The polarity and modulation sensitivity for signals at this pin can be set via the programmer The input resistance at this pin is greater than 10 k and is AC coupled Note that this pin...

Page 7: ...SR Data Set Ready This RS 232 output pin is asserted by the modem when it is powered up It indicates that the modem is actually connected although not necessarily ready to receive data The polarity ac...

Page 8: ...whenever power is applied Power On when receiving whether or not an actual signal is on the frequency RX Synthesizer Lock and when receiving and an actual data packet is being received RX Data In typi...

Page 9: ...ts 10 This voltage should be clean and preferably regulated since the RF power module is powered directly from this source Variations in voltage will cause variations in transmitted output power Conve...

Page 10: ...12 5 V Yes 2 0 A 16 0 V Yes 1 5 A Transmit Mode 10 watt output power 10 watt version of DTX 460 only Supply Voltage Internal Regulator Current Drain 13 5 V RF PA is unregulated 2 5 A 4 4 DUTY CYCLE K...

Page 11: ...he case screws at the rear of the module are longer allowing heat sinks to be attached Also a fan option is available from Ritron which can significantly increase the duty cycle up to 100 at room temp...

Page 12: ...loaded on a host computer by loading the CD ROM disc into the host computer s appropriate drive The programming software itself should be self extracting If it does not load automatically it can be ma...

Page 13: ...utton is used to read the contents of the radio into the programmer so that the current configuration of the radio can be observed and edited 5 1 FREQUENCY TAB Upon selecting the Read Radio button the...

Page 14: ...tware programmer PTT selection Selecting this button will put the radio modem in transmit mode regardless of the state of the PTT pin Selecting this button again will return the radio back to receive...

Page 15: ...de This pin has an internal pullup resistor and thus assumes a logic high state when not connected Therefore active low is the normal default setting Red LED Determines the behavior of the Red LED ind...

Page 16: ...e to a bit in bit out protocol which can be supported by the Ritron radio modem A synchronization pattern is affixed to the beginning of the transmitted stream but after that each symbol transmitted d...

Page 17: ...e up of 4 parts from most general to most specific System ID Group ID Unit ID and Sub unit ID Default Destination ID Sets the destination ID of the intended recipient Protocol Mask The protocol mask d...

Page 18: ...ld normally be used when the transmitter and receiver operate on the same frequency and is used to avoid interference to a transmission already in progress The presence of activity of the channel is d...

Page 19: ...ect Off dBm Sets the RF signal level in dBm such that the carrier detect pin will go inactive and the output audio if squelch is selected will be muted Note The Carrier Detect On level must be set to...

Page 20: ...uration one of the three boxes should be checked Besides not saving a configuration by not checking any option there are three options Saving all parameters saving all except the squelch and RF power...