Author Topic: MPX input  (Read 195 times)

YASPE

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MPX input
« on: June 07, 2022, 04:35:59 pm »
Does FM Scope works with MPX input or only with fm frecuencies? Do you have any display capture working with MPX input?

Jan

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Re: MPX input
« Reply #1 on: June 07, 2022, 08:41:31 pm »
What do you want to measure on the MPX?

YASPE

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Re: MPX input
« Reply #2 on: June 07, 2022, 10:36:45 pm »
The RF Carrier

Jan

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Re: MPX input
« Reply #3 on: June 07, 2022, 10:51:26 pm »
The RF carrier spectrum is not accessible in the MPX mode because there's no RF signal.

For the same MPX signal but various FM transmitters the RF carrier spectrum may look considerably different.

YASPE

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Re: MPX input
« Reply #4 on: June 07, 2022, 11:33:53 pm »
Sorry Jan, and frequency deviation, modulation power and mpx? I refer to P275R model. Thank's.

Jan

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Re: MPX input
« Reply #5 on: June 08, 2022, 09:42:56 am »
Following F.A.Q. topic will give you further information:
"Is it possible to show MPX voltage directly in kHz?"
https://pira.cz/fm_broadcast_analyzer/?art=support#faq

What is entirely impossible: making a general setup of audio processor's MPX output to get stable FM modulation parameters in connection with various FM transmitters.

What is possible with certain caution: making a setup of audio processor's MPX output to get stable FM modulation parameters in connection with the same FM transmitter models. To do this, you need the FM transmitter and a dummy load. The value reading must be made from the modulated signal.