Chapter 8 __________________________________________________________Technical Data  
VAISALA
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CHAPTER 8 
TECHNICAL DATA 
This chapter provides the technical data of SPS311. 
Specifications 
Table 16  SPS311 Specifications 
Property  Description / Value 
Dimensions  235 x 323 x 183 mm 
Power consumption  70 W max. 
Mains voltage  90 ... 132 V or 175 ... 264 V 
Mains frequency  47 … 63 Hz 
DC power connection  19 … 36 VDC, 60 W max. 
Weight  7.5 kg max. 
Cooling system  Forced air convection, three fans 
UHF Connector  Coaxial N-type female 
GPS Connector  Coaxial TNC-type female 
VLF Connector  Coaxial C-type female 
Antenna power  Antenna amplifiers are powered through 
antenna cables 
Modulation  GFSK, GMSK, FM, FSK  
Frequency range  400.15 ... 406 MHz  
Sensitivity with RS92-SGP  -120 dBm (* 
Sensitivity RS92-K, RS80-15G -110 dBm (* 
Noise figure  <2.5 dB (* 
Image rejection  70 dB (* 
Spurious Free Dynamic 
Range with RS92-SGP 
90 dB (* 
Third Order Intercept Point 
(IIP3) 
0 dBm (* 
Input impedance  50 Ohms 
Operating temperature range  0° C ... 45° C 
Operating humidity  10 … 90 % RH (non-condensing) 
Storage temperature  -55° C ... 70° C 
Storage humidity  5 … 95 % RH 
*) specifications valid with Vaisala telemetry antennas