Murata Electronics Corporation 22 6/2/2021
decrease packet latency. A larger value increases network capacity, due to decreased
overhead in channel switching. The hop duration is specified in 69.4µs increments. The
default value of 90H corresponds to a duration of 10ms. The maximum value of FEH is
17.627ms. For best results, do not specify a duration of less than 3 ms. This value only needs
to be set in the base which broadcasts the parameter to all remotes. However, link time can
be reduced if this value is also programmed into the remotes, which use it as a starting value
when scanning for the base.
Set Minimum Data Length
This sets the minimum threshold number of bytes required to form a packet in transparent
mode. The radio will wait until the data transmit delay elapses before sending a data packet
with less than this number of bytes. Can be used to keep short, intermittent transmissions
contiguous. In packet modes, the length parameter in the data packet will override this value
(See Section 3.1). This value is subject to the maximum data length even in packet mode. See
Get Maximum Data Length below.
Get Maximum Data Length (read only)
This parameter indicates the largest number of bytes that a remote will transmit per hop,
based on the size of the slot it has been allocated by the base. In general more remotes mean
less data can be transmitted per remote. By reading this parameter and dividing by the hop
duration, the remote's data rate capacity can be determined. Attempting to send protocol
mode packets longer than maximum data length will result in the packet being discarded
without being sent. See Section 2.3.3 on the tradeoffs between hop duration and data length.
Set Maximum Number of Remotes (base only)
This parameter limits the number of remotes that can register with a given base. The default
is 62 remotes which is the maximum number of remotes that can be registered with a base at
one time. This command is useful when used in conjunction with global roaming for load
balancing when base stations are collocated. It is also useful to assure a minimum remote
throughput.
Set Packet Attempts Limit
If ARQ Mode is set to 0, sets the number of times the radio will attempt to send an
unsuccessful transmission before discarding it. If ARQ Mode is set to 1, it is the number of
times every transmission will be sent, regardless of success or failure of a given attempt.
When this parameter is set to FFH, RF flow control mode is entered for transmissions from
the radio (See Section 2.3.4). This mode can be entered for one or both radios in a point-to-
point system. Using this mode in a point-to-multipoint system will stop transmissions to all
radios when any one radio has a full buffer.
Set Data Transmit Delay
When used in conjunction with the minimum data length parameter, this sets the amount of
time from the receipt of a first byte of data from the host until the radio will transmit in
transparent mode. Default is 00H which causes transmission to occur without any delay.
When a host is sending a group of data that needs to be sent together, setting this parameter
will provide time for the group of data to be sent by the host before the radio transmits. If the
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