Piccolo system user guide - Unmanned Aircraft & Drones

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Table 6. Parameters for different operational modes of the payload lines.
Modes Meaning of first parameter Meaning of second
parameter
Default N/A N/A
Discrete Out Zero for low output, nonzero for N/A
high output.
Discrete In N/A N/A
Pulse/Period Out Period of the output signal in
nanoseconds.
Pulse width of the output
signal in nanoseconds.
Inverted
Period of the output signal in Pulse width of the output
Pulse/Period Out nanoseconds.
signal in nanoseconds.
Pulse In
Number of input periods over N/A
which to accumulate the signal.
Inverted Pulse Number of input periods over N/A
In
Period In
which to accumulate the signal.
Number of input periods over
which to accumulate the signal.
N/A
Figure 20. Payload control page
The payload control page also gives the ability to set the baud rate for the two external serial
ports. One of the ports, called the payload port, is used to send a bi-directional stream of data
between the operator interface and the avionics. The other port supports the same
communications protocol that runs over the main UHF link, and allows external communications
systems to be integrated. The external communications port can run with or without the flow
control scheme implemented for the UHF data link. See the document “Piccolo
Communications” for details.
Piccolo User’s Guide Page 32