FreeWave Technologies Inc. AMI0032AT Manuale Utente
Spread Spectrum Wireless Data Transceiver User Manual
Preliminary GXM Manual
Version 0.2
28
PRELIMINARY
(3)
2.4GH
Z
F
REQUENCY
Z
ONE
Frequency Zone allows the user to select which portions of the band the network will use. Setting a zone
to 1 will include it in the hopping pattern, while setting the zone to 0 will exclude that zone. In MultiPoint
networks, this setting is only changed in the Master radio. In Point-to-Point networks, the Master and the
Slave must have matching Frequency Zone settings. Below is the frequency zone table displaying the
beginning frequency and ending frequency in each of the 16 zones.
to 1 will include it in the hopping pattern, while setting the zone to 0 will exclude that zone. In MultiPoint
networks, this setting is only changed in the Master radio. In Point-to-Point networks, the Master and the
Slave must have matching Frequency Zone settings. Below is the frequency zone table displaying the
beginning frequency and ending frequency in each of the 16 zones.
Note:
The Hop Table Version must be set to 0 when using Frequency Zones. If another Hop Table
Version were to be selected, the limitations of that selection would be applied to the hopping
pattern as well. For example, if Hop Table Version 3 were selected, only the middle of the band
would be available in the pattern. Then, if Frequency Zones 5, 6, 7, 8 and 9 were set to 0 no
allowable frequencies would be available for the radio to use.
pattern as well. For example, if Hop Table Version 3 were selected, only the middle of the band
would be available in the pattern. Then, if Frequency Zones 5, 6, 7, 8 and 9 were set to 0 no
allowable frequencies would be available for the radio to use.
Binary Zone Number (LSB First)
Beginning Freq. (MHz)
Ending Freq. (MHz)
0 2400.3072
2405.4912
1 2405.8368
2410.6752
2 2411.0208
2415.8592
3 2416.2048
2421.0432
4 2421.3888
2426.2272
5 2426.5728
2431.4112
6 2431.7568
2436.5952
7 2436.9408
2441.7792
8 2442.1248
2446.9632
9 2447.3088
2452.1472
10 2452.4928
2457.3312
11 2457.6768
2462.5152
12 2462.8608
2467.6992
13 2468.0448
2472.8832
14 2473.2288
2478.0672
15 2478.4128
2483.2512
WARNING:
To adhere to the EU specifications, it is necessary to use the proper frequency zone
combination based on the frequency offset. While using a frequency offset of zero, the first
zone (0) needs to be removed. Using frequency offsets of one or two, the last zone (15)
needs to be removed. See table below.
combination based on the frequency offset. While using a frequency offset of zero, the first
zone (0) needs to be removed. Using frequency offsets of one or two, the last zone (15)
needs to be removed. See table below.
Frequency Offset
Frequency Zone Requirements
0 0xxxxxxxxxxxxxxx
1 xxxxxxxxxxxxxxx0
2 xxxxxxxxxxxxxxx0
1 xxxxxxxxxxxxxxx0
2 xxxxxxxxxxxxxxx0
WARNING:
FCC regulations require a minimum of 50 separate frequency channels be used within a
hop pattern. Using the Standard hop table, a minimum of 5 frequency zones are required for legal
communication.
communication.