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4410-4412/RAM: lower background frequency to 5MHz 

It is to make the plot easier for our eyes.
This commit is contained in:
occheung 2021-12-22 17:12:42 +08:00
parent d26fe0f5d5
commit 1ce032605a
1 changed files with 4 additions and 3 deletions
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4410-4412.tex
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@ -508,6 +508,7 @@ def configure_ram_mode(self, dds):
dds.write_ram(self.asf_ram) dds.write_ram(self.asf_ram)
self.core.break_realtime() self.core.break_realtime()
dds.set(frequency=5*MHz, ram_destination=RAM_DEST_ASF)
# Pass osk_enable=1 to set_cfr1() if it is not an amplitude RAM # Pass osk_enable=1 to set_cfr1() if it is not an amplitude RAM
dds.set_cfr1(ram_enable=1, ram_destination=RAM_DEST_ASF) dds.set_cfr1(ram_enable=1, ram_destination=RAM_DEST_ASF)
@ -525,9 +526,9 @@ def run(self):
The generated RF output of the above example consists of the following features in sequence: The generated RF output of the above example consists of the following features in sequence:
\begin{enumerate} \begin{enumerate}
\item A 10 MHz RF pulse for 2 microseconds. \item A 5 MHz RF pulse for 2 microseconds.
\item No signal for 1 microseconds. \item No signal for 1 microseconds.
\item A 10 MHz RF pulse for 1 microseconds. \item A 5 MHz RF pulse for 1 microseconds.
\item No signal for 3 microseconds. \item No signal for 3 microseconds.
\item Go back to item 1. \item Go back to item 1.
\end{enumerate} \end{enumerate}
@ -543,7 +544,7 @@ Multiple RAM channels can also be synchronized.
Similar to the 10 MHz single-tone RF signals, specify \texttt{phase} when calling \texttt{dds.set()} in \texttt{configure\char`_ram\char`_mode}. Similar to the 10 MHz single-tone RF signals, specify \texttt{phase} when calling \texttt{dds.set()} in \texttt{configure\char`_ram\char`_mode}.
For example, set phase to 0 for the channels (\texttt{phase=0.0}). For example, set phase to 0 for the channels (\texttt{phase=0.0}).
\begin{minted}{python} \begin{minted}{python}
dds.set(frequency=10*MHz, phase=0.0, ram_destination=RAM_DEST_ASF) dds.set(frequency=5*MHz, phase=0.0, ram_destination=RAM_DEST_ASF)
\end{minted} \end{minted}
Then, replace the \texttt{run()} function with the following. Then, replace the \texttt{run()} function with the following.
\begin{minted}{python} \begin{minted}{python}