Pira.cz Technical Forum

FM Analysis => P275 FM Analyzer => Topic started by: genunix on December 27, 2025, 09:51:22 am

Title: Histogram data from serial connection
Post by: genunix on December 27, 2025, 09:51:22 am

Hi. I have a question regarding the interpretation of histogram data obtained from a serial port using the ?H command.
Here is the data:

"Histogram Data:",
"0; 0 1;",
"0 2;"
...
"0 120;",
"0 121;",
"0"

What does the first value in the first row (0; 0 1;) mean?
What does the value in the last row (0) mean?"

Title: Re: Histogram data from serial connection
Post by: Jan on December 27, 2025, 10:12:57 am

It consists of pairs

bin; count

for each deviation in range 0 to 121 kHz.

Value separator is space or CRLF in any mixture and quantity.
The separators are corrupted in recent firmware version. It makes no issues for processing but does not look well. This will be fixed in fw version 2.2f.

Title: Re: Histogram data from serial connection
Post by: genunix on December 27, 2025, 12:08:13 pm

Jan, Thank You for reply.