
37
LED state Description
.PNFOUBSZHSFFOçBTI Communications transmit
.PNFOUBSZBNCFSçBTI Awaiting response
.PNFOUBSZçBTIJOHSFE Communications response error
Momentary solid red No communications response
Solid amber USB plugged in but not active
Solid green USB connection active
Off
No USB communications, or user mode
inactive
Table 16. USB port indicator (Figure 1-16)
LED state Description
4JOHMFHSFFOçBTIFWFSZTFDPOET Voltage above 2 V present
%PVCMFHSFFOçBTIFWFSZTFDPOET Voltage above 10 V present
5SJQMFHSFFOçBTIFWFSZTFDPOET Voltage above 20 V present
Off No power present, or user mode inactive
Table 17. Power port & DC jack indicator (Figure 1-8, 1-17)
Power/user touch button
The touch button input (Figure 1-3) serves multiple purposes, these depend upon
the current state of the C3 and are as follows:
• If the C3 is off, a momentary press will power the C3 up
• If the C3 is on, but not in user mode, a momentary press will activate user
NPEFOPUJæFECZBOBTDFOEJOHTFSJFTPGCFFQT
• If the C3 is on, a momentary press will send a ‘user visit’ event via the
connected radio
• If the button is held continuously, four short beeps and one long beep will
be heard, after which the C3 will power off. If external power is present the
C3 will restart once the button has been released, else the C3 will remain
4. Appendix
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