SP-900 900 Mhz. Spread Spectrum Modem

Data Sheets:

The SP-900 is a valuable member of our 900MHz frequency-hopping family.  The SP-900 is built around a superior radio core.  The proprietary radio technology has evolved to meet the demands of the toughest RF and physical environments.  With superior noise rejection, sensitivity, and extended temperature range, the SP-900 excels where many other transceivers fail.  The feature-rich SP-900 allows easy interface to new and old field equipment. 

A pair of SP-900s provides a practical and reliable alternative to using traditional analog phone-line modems or "null-modem" serial cable (RS-232) connections for data communications between serial communications equipment. Moreover, wireless data communications using the SP-900 means you will benefit from: greater flexibility and freedom to relocate serial communications equipment; reduced cabling hassles; eliminated requirement for access to wire-based transfer media such as telephone lines; no ongoing access fees; and, the ability to communicate through walls, floors and many other obstacles. 

Applications: SCADA ,Telemetry, Vehicle Data/Tracking ,Traffic Control,

Utilities/MeteringDisplay Signs,Many More

 

The SP-900 is a robust and reliable member of the Simrex Corporation family of RF modems.  Our attention to customer feedback has resulted in the most comprehensive set of features for SCADA and telemetry applications.   Users now have the ability to deploy virtually any topology of network, including unlimited repeater capability, RTS/CTS framing, Modbus compatibility and many other data formats.

 

  Features of the SP-900

  • Transmission within a public license-exempt band of the radio spectrum (this means that the SP-900 can be used without access fees such as those incurred by cellular airtime) 
  • DB9 RS-232 serial I/O data port with hardware flow control (allowing the SP-900 to interface with virtually any communications device with an asynchronous RS-232 port such as a computer) 
  • Supports point-to-point and point-to-multipoint, repeater operation with user-configurable addressing 
  • No limit on the number of repeaters you can cascade.
  • User-configurable encryption key maximizes security and privacy of communications 
  • Twenty different user-selectable pseudo-random hopping patterns to offer the possibility of separately operating multiple networks while providing security, reliability and high tolerance to interference 
  • Built-in CRC-16 error detection and auto re-transmit to provide accurate and reliable data
  • User selectable FEC 
  • FCC (Federal Communications Commission) and IC (Industry Canada) approved 
Technical Specs
Data Interface  Asynchronous RS-232, 9-pin female D-sub
Signals  Sig. Gnd, TX, RX, DCD, DSR, DTR, RTS, CTS
Data Format  8N1,8N2,8E1,8O1,7N1,7N2,7E1,7O1,9N1
User Interface  AT command line interface
Bandwidth/Data Rate  2400 - 115,200 bps, uncompressed half-duplex 
Communications Range  22 miles line-of-sight or more
Memory  Non-volatile configuration memory
Operating Modes  Point-to-Point, Point-to-Multipoint, Repeater-Slave
Power Requirements  9-30 VDC, 1 Amp
Power Consumption  490 mA (Max) at 1W transmit, 200 mA receive (12VDc input) 
Frequency   (North American      Version) 902 - 928 MHz (other countries on request)
System Gain  137 dB
Sensitivity  -107 dBm  @ 10-6
Minimum Signal for Synchronization  -110 dBm
Out of Band Rejection  >70dB
Inband Rejection  >60dB
Adjacent Channel  Rejection  >50dB
Output Power  1mW, 10mW, 100mW, 1W (user-configurable)
Spreading Code  Frequency Hopping
Hopping Patterns  60 pseudo-random, user selectable
Error Detection  CRC-16 with auto-retransmit, FEC
Enclosure Material  Milled aluminum, black baked powder coat finish
Dimensions (WxDxH)  Encl: 3.72" x 4.25" x 1.72" (95 x 108 x 44mm)
Antenna Connector  Reverse gender TNC
Weight  Approx. 420 grams
Operating Environment  Temperature: -40 to +70°C; Humidity: 5 to 95% non-condensing
Approvals  FCC, IC