管理员： 发布时间：2014-10-09
本2.4G数字无绳电话方案采用美国国家半导体公司的2.4G无线方案。本系统运行在2.4GHz(2400-2483.5GHz)开放频段上，采用时分双工（TDD），调制方式为BT=0.5的GFSK，调制指数为0.28～0.35。采用跳频方案以确保链路稳定。本方案包含1台母机和1台子机，但同时可带4台子机。4台子机可同时进行通讯。基本 RF 指标
Item
Specification
Comment
Receive Sensitivity
Minimum: -89dBm
Typically: -92dBm to -94dBm
Maximum: -96dBm
@ BER = 0.001
Receive IIP3
-21dBm to -19dBm
Transmit Power (NTP)
Minimum: 20dBm
Typically: 22dBm to 24dBm
Maximum: 25dBm
Approx. 200mW
Signaling Bit-rate
576Kbit/sec
Modulation
GFSK
Bandwidth 20dB < 0 . 864MHz
Channels
95
Channel spacing: 0.864 MHz
RX/TX slots
4/4
Fast Frequency Hopping
Up to 800 hops/sec
Antenna Diversity
Control signals are available from the module
Antenna switch has to be added externally
Dual Slot Diversity
Standard Compliance
FCC part 15.247/249
CVM: (1 st Generation)
The protocol and software interface is contained in the SC14428
Module for fixed part and portable part
Size is 45.6X26.6X 6mm
