Technical specifications – GE GFK-2489 User Manual

Page 173

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

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:

Spurious: