User Manual

Global Transceiver Module (GXM) Wireless Data Transceiver User Manual
LUM0031AA
Version 1.0 28
Available options
(0)
HOP TABLE VERSION
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 1/3rds of band, avoids the middle
(1)
HOP TABLE SIZE
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.
(2)
HOP FREQ OFFSET
In the GXM, 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.
(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 following table reflects the usage of Frequency Offset 0. Utilizing Frequency Offset 1 or 2
would shift all frequencies by 115.2 or 230.4 kHz respectively.
By default, all Frequency Zones are ENABLED.
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
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