Technical specifications – GE GFK-2489 User Manual
Page 173
8-12 TranSphere TS Wireless Extended Range IP Networking Transceivers – January 2008 GFK-2489
8
Technical Specifications
Below are the technical specifications for TS Wireless 900 and 2400 models. Specifications
that are unique to a particular model are identified by frequency range (900 MHz or 2400
MHz).
General
Data Rate:
106 kbps over the air
Frequency Band:
900 MHz models: 902–928 MHz ISM band 2400 MHz models: 2401.6-
2477.8 MHz in the following bands: 2401.6-2427.0 MHz (Band A) 2427.2-
2452.6 MHz (Band B) 2452.8-2478.2 MHz (Band C)
Configurations:
Access Point, Remote
Spreading Mode:
Frequency Hopping Spread Spectrum (FHSS)
Frequency Channels:
Selectable; 64 to 128 in increments of 16
MTBF (Mean Time Between
Failures):
35 years (Telcordia Method 1, Case 3)
Startup Time:
AP: about 30 seconds
Remote: about 1 second
Time Required for Remote to Connect
with AP:
typically less than 1 second
Radio Characteristics
System Gain:
2400 MHz: 131 dB
900 MHz: 136 dB
Carrier Power:
900 MHz: 20-30 dBm
2400 MHz: 20-27 dBm
2400 MHz ETSI: 10-20 dBm
Output Impedance:
50 Ohms
Occupied Bandwidth:
200 kHz
Modulation:
Two-level CPFSK (Continuous-Phase FSK)
Receiver Sensitivity:
2400 MHz: typically -104 dBm (1 x 10
-6
BER)
900 MHz: typically -105 dBm (1 x 10
-6
BER)
Frequency Hopping Range:
Eight user-definable 3.2 MHz-wide zones, each containing 16 frequencies
Hop Pattern:
Based on network address
Frequency Stability:
30 ppm
Transmitter:
Duty
Cycle:
Continuous
Spurious:
–67
dBc
Receiver:
Type:
Double-conversion superheterodyne
Intermodulation:
59 dB minimum (EIA)
Desensitization:
70
dB
Spurious:
60
dB