Wire Replacement I/O (900 MHz): User Manual and Reference Guide
Frequency Key
Setting
Description
l
Hopping patterns minimize the interference with other FreeWave radios
operating in the area.
l
Use the
Hop Table Version
,
Hop Table Size
, and
Frequency Zone
fields to define more network differentiation by way of limiting the number
and location of frequencies the radios may hop on in the 902-928MHz
band.
Example
: If 10 pairs of FreeWave radios are operating on different
networks in close proximity, setting a different
Frequency Key
value
reduces the chance that radios hop to the same frequency at the same
time.
If two networks were to hop to the same frequency, the next hop would
be to a different frequency for both networks.
Gain additional network separation by adjusting the
Max Packet
Size
and
Minimum Packet Size
.
2.6.2 Max Packet Size and Min Packet Size
Max Packet Size and Min Packet Size
Setting
Description
Default Options:
Max Packet Size = 8
Min Packet Size = 9
Options:
l
Any number between 0 and 9.
l
If the I/O Master's Modem Mode is set to
(3) Point to MultiPoint Slave
,
the
Maximum Packet Size
and
Minimum Packet Size
MUST match
the network Master.
FreeWave Recommends
: In a wire replacement I/O system, set both
the
Maximum Packet Size
and
Minimum Packet Size
to
2
or higher.
Terminal Menu:
(3) Edit Transmission Characteristics > (1) Max Packet Size and (2) Min
Packet Size
Setting:
l
Both the I/O Master and I/O Slaves require a minimum combined packet
size of 48 bytes.
l
If using Digital Inputs and Outputs for pulse counting, the packet size
effects how many pulses the I/O System can register.
LUM0008AG Rev Sep-2015
Page 37 of 131
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