After front switch power down there is an overvoltage error displayed when power supply is turned off.

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  • Updated 5 years ago
  • Not a Problem
I thought I read where Tim mentioned that if you allow the radio to power down completely with the front switch and the display cleared that you should not see the overvoltage error when removing the power supply later. I just wanted to double check and if this is a repost I apologize. as I know this was reported before the last software update. To power down, I normally close the application down 1st then push the front switch then later after display is cleared turn off the power supply.

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Joe WD5Y

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Posted 5 years ago

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Tim - W4TME, Customer Experience Manager

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Official Response
First Dan is right, the error message text is wrong as it should say under voltage not over voltage. This is a previously reported defect. But the generation of the error message is correct and here is why.

After you press the front panel power switch and the radio shuts down, the main processors and the RF components of the radio are no longer active.

At this point there is one processor in the radio that is still running because you have DC power applied to the radio. This process, called PSoC is monitoring the input voltages and when you power off your power supply the result is a voltage decay rather than going from 13.8 VDC to 0 volts. Because of the voltage decay you will momentarily see a low voltage error message. This is normal because it is what is actually happening. If you pull the power cable from the radio rather than turning off your power supply, there isn't a voltage decay process and you will not see the under voltage message.