FreeWave Technologies Inc. 1521131FFF Manuale Utente
Spread Spectrum Wireless Data Transceiver User Manual
LUM0002AG Rev A
Version 7.0
31
F
REQ
K
EY IN
2.4
GH
Z
T
RANSCEIVERS
The Frequency Key for the 2.4GHz transceivers behaves identically to that of the 900MHz transceivers.
The selection of 15 FreqKeys (0-9 and A-E) is the same as the 900MHZ, allowing for 15 different pseudo-
random patterns.
The selection of 15 FreqKeys (0-9 and A-E) is the same as the 900MHZ, allowing for 15 different pseudo-
random patterns.
(0)
2.4GH
Z
H
OP
T
ABLE
V
ERSION
Entry 0 allows the user to choose the portion of the band in which the transceiver will operate.
Selection
Band
0
Entire band, 2.400 - 2.4835 GHz
1
Entire band, but offset frequencies from selection 0
2 Lower
1/3
rd
of band
3
Middle of band
4
Upper one third
of the band
5
2 outer 1/3
rds
of band, avoids the middle
(1)
H
OP
T
ABLE
S
IZE
The Hop Table Size defines how many separate channels will be used by a given network. For 2.4GHz
networks, the Hop Table Size may be set from 50 to 80.
networks, the Hop Table Size may be set from 50 to 80.
(2)
H
OP
F
REQ
O
FFSET
In the 2.4 GHz Transceivers, Hop Freq Offset allows the user to select an offset of 115.2 KHz, or 230.4
KHz higher than the standard frequency selection. For example, if two networks are operating side by
side, with one set to Hop Freq Offset of 0 and the other to Frequency Offset of 1, the frequencies used in
the different hopping patterns will be offset by 115.2 KHz.
KHz higher than the standard frequency selection. For example, if two networks are operating side by
side, with one set to Hop Freq Offset of 0 and the other to Frequency Offset of 1, the frequencies used in
the different hopping patterns will be offset by 115.2 KHz.