The LRM-100 product is designed to build modern radio networks for data collection and remote control of stationary objects.
Radio modems are transceivers that convert signals from standard RS-232 serial interfaces into radio frequency packets and vice versa.
The radio modem is controlled using the LRM-100 Parameter Configuration Program. Parameters are configured via the serial interface through the Installation port.
Radio modems have a removable contact block for quick connection of power wires, ports for managing settings and transmitting data via the RS-232 interface, as well as LED indicators to display the product status.
The device can be used as a radio extender for industrial RS-232 interfaces.
The radio modem collects data via the RS-232 interface in asynchronous mode at speeds up to 19.2 kbit/s, and then transmits them via a radio channel, with a channel step of 12.5/25 kHz, in the frequency range of 136-174 MHz, in "transparent" mode.
The LRM-100 radio modem was developed as part of import substitution, to replace the American Guardian and DataRadio radio modems.
The LRM-100 radio modem has a declaration of conformity from the Federal Communications Agency
The LRM-100 radio modem has been assigned the status of telecommunications equipment of Russian origin (TORP Status) by the Ministry of Industry and Trade of the Russian Federation
Radio transmitter output power - from 1 W to 10 W
Radio transmitter power setting step - 0.1 W
Current consumption (at an output power of 10 W) - no more than 4 A
Rated voltage - from 10 to 30 V
Emission type - 16K4F1D
Carrier frequency range (set by software) - 136-174 MHz
Channel width - 12.5/25 kHz
Frequency stability - 0.5 ppm
Frequency switching time - 5 ms
Data reception and transmission speed, kbps - 4,800/9,600/19,200
Modulation - 2GFSK
Minimum frequency spacing for receiving and transmitting in duplex mode - 5 MHz
Intermodulation - >80 dB
Wave impedance of the load - 50 Ohm
Frequency step - not less than 5 Hz
Selectivity on the adjacent channel - not worse than 80 dB