Slave retries will stop when an acknowledgement is received from the Master.
l
Long data type
Where to find:
l
Settings Editor tab in Device Configuration Utility: RF451 > Max Slave Retry
10.4.74.26 RadioTxPwr
Specifies the power level at which the RF module transmits.
It is important to note that the FCC specifies a maximum EIRP (Effective Isotropic Radiated
Power) of 36 dBm.
EIRP = (Transmitter Power) + (Antenna Gain) - (Cable Losses) [all
in dB or dBm]
Since the RF451 maximum power is 30 dBm, a 6 dB (or lower) gain antenna can be used with any
Transmit Power setting. If higher gain antennas are used, the cable loss will need to be
determined, and the Transmit Power adjusted so as not to exceed the FCC limit (36 dBm).
Note that lower transmit power can be used (to conserve battery power) if the required range
allows it.
l
Long data type
Where to find:
l
Settings Editor tab in Device Configuration Utility: RF451 > RF Transmit Power
10.4.74.27 RadioTxRate
There are two options for the RadioRxRate, 0 and 1. For normal operation of the transceiver,
RadioRxRate = 1. RadioRxRate = 0 is useful to qualitatively gauge signal strength in Point to
Point mode. When RadioRxRate = 0, the transceivers will transmit back and forth continuously
regardless if they have any actual data. In Point-to-Point operation, RadioRxRate = 0 should be
used only as a diagnostic tool and not for normal operation.
l
Long data type
Where to find:
l
Settings Editor tab in Device Configuration Utility: RF451 > Xmit Rate
10. Information tables and settings (advanced)
204
