22 - D2O FL1 Product Manual
COMMAND SYNTAX
DETAILS
sys -q
This diagnostics command provides insight as to how much data the D2O can transmit.
If the message queue is empty, meaning no data has been scheduled for transmission, the
size returned is 320 bytes.
If too many samples have been recorded and scheduled for transmission, the D2O’s queue
will become overloaded and the size returned will be 0 bytes. In this scenario scheduled
messages will be lost.
If the message queue remains low for long periods, but the system is not over committed
with acquisitions, it indicates the D2O is keeping older data for re-transmission to achieve
the best probability for the data to get through. This is usually caused by the location and
current satellite orbits.
Note: This value is also periodically transmitted as part of the system diagnostics data.
Example:
sys -q
Queue Bytes Remaining: 300
COMMAND SYNTAX
DETAILS
sys -d
Displays the Receiver’s background noise level or RSSI (Received Signal Strength Indicator)
in dBm.
This advanced diagnostics command queries the receiver background noise level. The
measurement is being performed periodically in the background when the unit is entering
sleep mode.
The receiver is very sensitive and Laptop connections and other equipment can affect the
reading adversely. A good reading should be lower than -95dBm i.e. (-95 to -110dBm).
Note: This value is also periodically transmitted as part of the system diagnostics data and
the transmitted value will give a more accurate indication.
Example:
sys -d
RSSI = -96dBm
COMMAND SYNTAX
DETAILS
sys -L
Displays an estimate of the remaining power in the battery as a percentage (0% to 100%).
The D2O records the power consumption based on system activity. The D2O is powered
by primary cell batteries and an estimation of power left as a percentage is calculated and
returned.
Note: This value is also periodically transmitted as part of the system diagnostics data.
Example:
sys -L
94%
