john_sax Posted June 18, 2014 Share Posted June 18, 2014 My select is only giving 7.3 volts from the track outlet.The Aux is normal at 15 volts. Can anybody help?John Link to comment Share on other sites More sharing options...
96RAF Posted June 19, 2014 Share Posted June 19, 2014 You can't read DCC voltage like you can DC without a special meter or scope.You can get an approximation by reading on the AC volts scale for comparitive purposes.You can check the input voltage by reading what your PSU is putting out though by way of isolating if a fault (if any) is with the Select or its PSU. Link to comment Share on other sites More sharing options...
Fishmanoz Posted June 19, 2014 Share Posted June 19, 2014 The DCC signal is a pulse width modulated square wave at over 10kHz. Your meter is likely only designed to read the value of sine waves at much lower frequency. What it makes of the DCC signal will depend on its design and it can't be relied on for accuracy. If the Select is running your locos, I wouldn't worry about the meter reading. Link to comment Share on other sites More sharing options...
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