开云体育

I've scanned some of the materials and cannot find any descriptions of the
states of the LEDs. Any clues?



Thanks,

Roger

N1EYZ



Roger Tobin

Roger.tobin@... <mailto:Roger.tobin@...>

One is the charge led that flashes while being charged and is steady when fully charged. The other flashes in step with the sweep when on
Gary
W9TD

You find hints in the manual in the Wiki. The RED led ( i think ), has the behavior of a USB power pack LED, because there is a power-pack chip (IP5303) in the Nano to charge the battery and a "watch dog timer" to take off the Nano if there is no activity after 30 sec after power off. The BLUE LED gives some activity of the processor chip.

Since there are now many flavors of NANO's out there but the ones that I have with the 4 red LED's on the side indicate the state of the battery charge. While charging all 4 will be on with one of them flashing and once fully charged it stays on. While running on battery the 1st one goes out after a few minutes than after some time 2nd goes off than a bit later the 3rd will go out. the last led will stay on a few hours and once the battery voltage reaches its full discharge it turns off and so does the NANO. The 2 little blue leds and just my guess, 1 might be something like watchdog or every time it starts a sweep, have no clue about the 2nd one.

The two blue leds are connected to the ADF4350 and tell it is in lock.
They will go off when the ADF4350 are powered down (aka scan stops before 140Mhz)

There are two more leds on the PCB. One is to indicate clipping and the other shows activity.

Gabriel or OwoComm described them somewhere but I cannot find it again.

Also see /g/NanoVNA-V2/wiki