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RDM General Implementation Discussion General Discussion and questions relating to implementing RDM in a product.

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Old September 30th, 2009   #1
berntd
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Default Sensor type and Sensor unit for DMX rate question

Hello,

Which are the correct sensor type and sensor unit definition to use for measuring DMX frames / second?
SENS_COUNTER_16BIT ?


I see no UNIT_ events / second or counts per second etc. UNITS_HERTZ might work but doesn't sound right somehow?

Kind regards
Bernt
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Old September 30th, 2009   #2
ericthegeek
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SENS_FREQUENCY and UNITS_HERTZ seem the most appropriate to me.

Counts per second is the definition of Hertz.
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Old September 30th, 2009   #3
berntd
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Quote:
Originally Posted by ericthegeek View Post

Counts per second is the definition of Hertz.
Strictly speaking it is defined as 'cycles per second'. That is why I thought it is not 100% correct for 'frames per second' or 'counts per second'.

It is probably the most appropriate one in the list, as you said.

Bernt
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Old October 1st, 2009   #4
mike_k
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I would say that Hertz (1 Hz = 1/s) would be the appropriate unit to use for this. [Hz] is the most commonly used unit for measuring periodic events even in cases when it is not "pure" cycles. But I suppose that one can also argue that a DMX frame could be describes as cycles... Break->MAB->SC->Data->MBB->Break->MAB->etc.... So if you'd like I suppose you can see the DMX refresh rate as the frequency at which the NSC arrives.
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