Pull-Down resistor on the multiple channels NI9472

[Nemesis]

Hi,

I noticed that my NI9472 did not toggle between Vsup and COM when I wanted to create PWM signal. I found that pull-down resistor can help and it helped. I based on the 'Troubleshooting Digital Output and Pulse Generation NI C Series Devices'

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z000000P8gGSAS

I would like to do it on the more than one channel. Do I have to add a pull-down resistor to each channel or I can connect all channels to the one pull-down resistor to simplify the wiring? Could somebody clarify it?

I want to on the 4 channels PWM signal and on the others trigger external relays.

Thanks in advance

Kamil

[crossrulz · Accepted solution]

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@Nemesis wrote:

I would like to do it on the more than one channel. Do I have to add a pull-down resistor to each channel or I can connect all channels to the one pull-down resistor to simplify the wiring? Could somebody clarify it?

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That would short all of the lines together.  You definitely do not want that.  Each line needs its own pull-down resistor.

[Nemesis]

Ok, thanks for replay. What I was afraid. Thank you.