User's Manual

Spread Spectrum Wireless Data Transceiver User Manual
Preliminary GXM Manual Version 0.2 28
PRELIMINARY
(3) 2.4GHZ FREQUENCY ZONE
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.
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.
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.
Frequency Offset Frequency Zone Requirements
0 0xxxxxxxxxxxxxxx
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.