GE GFK-2489 user manual Technical Specifications, General

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	35 years (Telcordia Method 1, Case 3)
Failures):
Startup Time:	AP: about 30 seconds
	Remote: about 1 second
Time Required for Remote to Connect	typically less than 1 second
with AP:
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 10-6BER)
	900 MHz: typically -105 dBm (1 x 10-6BER)
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

8-12 TranSphere TS Wireless Extended Range IP Networking Transceivers – January 2008 GFK-2489