Murata Electronics North America 5811M Manual Do Utilizador
© 2003 Cirronet
Incorporated
20
M-5811-0008 Rev -
Set Transmit Power
The WIT5811 has two preset transmit power levels, 10mW (10dBm) and 100mW (20dBm).
Control of the transmit power is provided through this command. Default is 100mW.
Set Point-to-Point Direct Mode
Sets point-to-point mode that is recommended for point-to-point applications, especially
where the remote radio is mobile and may leave and re-enter the range of the base. This
mode fixes the remote handle assignment to always be 30H and improves the re-registration
process. Must be set in both base and remote radios.
The WIT5811 has two preset transmit power levels, 10mW (10dBm) and 100mW (20dBm).
Control of the transmit power is provided through this command. Default is 100mW.
Set Point-to-Point Direct Mode
Sets point-to-point mode that is recommended for point-to-point applications, especially
where the remote radio is mobile and may leave and re-enter the range of the base. This
mode fixes the remote handle assignment to always be 30H and improves the re-registration
process. Must be set in both base and remote radios.
5.3. Protocol Commands
These commands can be used to tune the transceiver for optimum transmission of data across
the RF link. For most applications, the default values are adequate.
the RF link. For most applications, the default values are adequate.
Command
Description
xh[?|00-ff]
(base only)
Set high byte of Hop Duration
02H = default
ph[?|00-ff]
(base only)
Set low byte of Hop Duration
40H = default
pr[?|00-ff]
Set Packet Attempts Limit
10H = default
FFH = Infinite retry (RF flow control point-to-point only)
xw[?|00-34]
(base only)
Set high byte of Base Slot Size
01H = default
pw[?|00-34]
(base only)
Set low byte of Base Slot Size
60H = default
px[?|0|1]
Set ARQ mode.
0 = ARQ enabled (default)
1 = ARQ disabled (redundant transmission)
Note: Incorrect setting of these parameters may result in reduced throughput or loss of data packets.
Set Hop Duration
Sets the length of time the transceiver spends on each frequency channel. A smaller value
will allow the remote to lock on to the base signal faster at system startup, and will generally
decrease packet latency. A larger value increases network capacity, due to decreased
overhead in channel switching. The hop duration is specified in 52.1µs increments. The
default value of
Sets the length of time the transceiver spends on each frequency channel. A smaller value
will allow the remote to lock on to the base signal faster at system startup, and will generally
decrease packet latency. A larger value increases network capacity, due to decreased
overhead in channel switching. The hop duration is specified in 52.1µs increments. The
default value of
240H
corresponds to a duration of 30ms. 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 Packet Attempts Limit
If ARQ Mode is set to
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 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