Guardian™
Serial Radio Modem for Licensed Spectrum

 
136-174 MHZ | 215-240 MHZ | 406-512 MHZ | 928-960 MHZ
     
High Speed Serial Connectivity for Remote Monitoring & Control

The Guardian wireless modem provides a high-speed data link suitable for a wide variety of applications requiring system security and diagnostic reporting. Designed for speed and efficiency, Guardian provides over-the-air data rates up to 19.2 kbps in a 25 kHz channel.

Selectable operating modes provide flexibility: RS-232, RS-422 and RS-485 compatible; simplex, half-duplex or full-duplex operation; RTS-CTS handshaking protocol or data activated transmission (DOX) mode. Transparent, asynchronous serial formats are supported, such as Modbus™, Modbus-RTU™, AB DF1™ and various other protocol formats.

Real-time, non-intrusive online diagnostics report received signal strength (RSSI), RF power output, supply voltage and other radio performance statistics. Field Programming Software offers unit programming, link testing and RF path verification. CalAmp products are covered by a standard one-year warranty.

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Key Benefits:
  • 1-10 Watts (1-8 W MAS) Continuous Duty; software selectable
  • 10-30 VDC Wide Range Power Supply
  • On/Off-line Diagnostics for Network Health & Status
  • User selectable data rates: 4800, 9600, 19200 kpbs
  • OTA compatible with T-96SR and TSLM
  • Flexible, programmable External I/O interface
  • RS-232, RS-422, RS-485
 
Guardian Specifications
 
   
GENERAL ELECTRICAL
Frequency Range: 136-174 MHz, 215-240 MHz,
406-512 MHz, 928-960 MHz		 Tx Current: 1.2-3.6A@10V
0.6-1.8A@20V
0.4-1.2A@30V
   
Channel Bandwidth: 12.5 kHz, 25 kHz Rx Current: 360mA@10V
200mA@20V
150mA@30V
     
Modes of Operation: Simplex, Half-Duplex,
Full-Duplex Simplex, Half-Duplex (900 MHz)		 Primary Power: 10-30 VDC
 
Modulation: 2FSK  
Certifications: FCC, IC
MECHANICAL
  Nominal Dimensions: 5.50"W x 2.125"H x 4.25" D
13.97 x 5.40 x 10.8 cm
RECEIVER Shipping Weight: 2.4 lbs
1.1 kg
 
Bit Error Rate @ 1x10-6  
  12.5 kHz: -107 dBm @ 9.6kbps ENVIRONMENTAL
  -110 dBm @ 4.8 kbps Operating Temp.: -30° to +60°C
 
  25 kHz: -100 dBm @ 19.2 kbps Operating Humidity: 5% to 95% Non-condensing
  -107 dBm @ 9.6 kbps
  -110 dBm @ 4.8 kbps  
INTERFACES
Adjacent Channel: 60 db @ 12.5 kHz Serial COM1, COM2: RS-232, DB-9
  70 db @ 25 kHz
User: I/O, RS-422, RS-485, 8 Contacts (Male)
 
TRANSMITTER   Antenna: TNC Female (Tx/Rx)
SMA Female (Rx) -Full Duplex models only
Frequency Stability: 1.0 ppm  
Carrier Output Power: 1-10 Watts, 1-8 Watts (900 MHz)
Duty Cycle: 100% (Power Foldback for High Temps)  
Output Impedance: 50 Ohm