Campbell Scientific RF401A-Series Spread Spectrum Radios - Manual (Page 34)

RF401A-Series Spread Spectrum Radio
11.3.3 Radio Firmware Version
Radio firmware version
11.3.4 Received Signal Strength
This setting provides a means of knowing the signal strength of the last packet
received that was addressed to this radio and that had a valid CRC.
The RSS reading is a relative signal level indication expressed in dB (decibels).
Readings may vary up to 10 dB from radio to radio for a given received signal
level. The weakest signal reading is around 25 dB and the strongest signal
reading is near 86 dB. Although the RSS readings are not absolute, they will
be of value in such activities as:
• determining the optimal direction to aim a Yagi antenna
• determining the effects of antenna height, location
• trying alternate (reflective) paths
• seeing the effect of seasonal tree leaves
11.3.5 Retransmit Failures
Records the number of retransmit failure.
11.3.6 ME Baud Rate
Specifies the baud rate that will be used on the CSI/O port when configured for
ME Master.
11.3.7 RS-232 Parity
Specifies the parity that will be used on the RS-232 port.
11.3.8 RS-232 Stop Bits
Specifies the number of stop bits used on the RS-232 port.
11.3.9 RS-232 Character Length
Specifies the length in bits of character frames on the RS-232 port.
11.3.10 RS-232 Auto Power Down
Specifies whether to always power the RS-232 device or that the RS-232 TX
automatically powers down when there is no activity for 30 seconds.
11.3.11 AT Sequence Character
Specifies the character that should be sent three times sequentially in order to
put the modem in “local” mode.
11.3.12 Silence Time Before Command Sequence
Specifies the amount of time (in tenths of seconds) that the RS-232 interface
must be silent after accepting the AT command sequence before the RF401A
series will enter command mode.
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