Author Topic: DCC Troubleshoot Assistance Needed  (Read 1946 times)

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John

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Re: DCC Troubleshoot Assistance Needed
« Reply #15 on: November 24, 2014, 05:28:39 PM »
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Unless Dave has a special DCC voltmeter, it will be tough to measure the track voltage. Use AC setting on the standard multimeter.

Another way to approach this would be to measure current draw. Again, if a DCC ammeter is not available, measure the current on the power supply (DC) side. If the surges correspond to increased current draw, that might help in troubleshooting.

Let me just leave this here for reference ..

http://www.digitrax.com/tsd/KB909/track-voltage-measurement-on-dcc-layouts-with-dire/

You can at least measure the booster output with this method ..

peteski

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Re: DCC Troubleshoot Assistance Needed
« Reply #16 on: November 24, 2014, 06:39:45 PM »
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Hmmm.. I thought that the analog (address 00) functionality has been disabled on Digitrax (and other brands) command stations.
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davefoxx

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Re: DCC Troubleshoot Assistance Needed
« Reply #17 on: November 24, 2014, 07:23:31 PM »
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Hmmm.. I thought that the analog (address 00) functionality has been disabled on Digitrax (and other brands) command stations.

Analog (address 00) functions on my DB150, and, in fact, that's how I test a DC locomotive before I tear it down and add the DCC decoder.

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mmyers

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Re: DCC Troubleshoot Assistance Needed
« Reply #18 on: November 24, 2014, 10:02:11 PM »
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Zero stretching is still built in to all Digitrax command stations. It can be disabled by closing option switch 20.
NCE dropped zero stretching several years ago so only command stations with the old firmware still have it.
MRC and Lenz still support it. Not sure if they allow disabling.