Adcom A720, A723 manual Querying the actual configuration parameters, SET Rssi

CHAPTER 4

Using terminal commands

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EXAMPLE	To set the RSSI threshold to 58:
	SET RSSI 58

Querying the actual configuration parameters

You can query an addIT to find out its actual configuration parame- ters (GET the parameter). Typing OWNID, for instance returns the actual ID an addIT answers to (it should be the same as the one on its label). In addition to OWNID, PMP, SLOT, FREQ, and RSSI, the command VER returns the current software version of the device.

The RSSI commands returns two values: the actual measured value of the RSSI and the value set as threshold. As noted else- where, the threshold must be approximately 30% higher than the actual measured value. The actual RSSI is unstable due to the channel’s random noise, receiver’s internal noise, and/or to trans- missions just taking place. If the actual RSSI value is consistently higher than the programmed value, something must be wrong, or the channel is very noisy (however, before readjusting the RSSI threshold, check this with a handheld radio receiver or a scanner).

Other commands available in terminal mode are:

• DUMP addr—displays 256 bytes of the internal EEPROM memory, starting with the address addr (specified as hex values). Valid addresses for the model A720 are B600 to B9FF. The last 16 slots of data (for 15-minute slots, that makes 4 hours of data) are stored at B900 to B9FF. The remainder are used for internal configuration parameters or reserved for future use.

• RX—switches the device to receive mode until a key is pressed. This command is used for trimming or checking purposes.

• XMIT param—switches the device to transmit mode until a key is pressed. This command is used for trimming or checking purposes. param may be any of the following:

• 0—a 2 kHz tone will be modulated on the transmitted carrier

• 1—a 1 kHz tone will be modulated on the transmitted carrier

• T—a mixture of 1 and 2 kHz test tones

• Not given—an unmodulated carrier will be transmitted