From 21ac62978a0c3ef88837e338aeedecf2dd73f49e Mon Sep 17 00:00:00 2001
From: architeuthis <am@m-labs.hk>
Date: Fri, 24 Jan 2025 22:58:00 +0100
Subject: [PATCH] 4456-4457: add note on LEDs

---
 4456-4457.tex | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/4456-4457.tex b/4456-4457.tex
index 20ed8d3..cac2840 100644
--- a/4456-4457.tex
+++ b/4456-4457.tex
@@ -418,6 +418,12 @@
         \caption{Phase noise measurement}
     \end{figure}
 
+\section{Programmable LEDs}
+
+    4456 Mirny features several status LEDs, including a two per output channel. One per channel displays RF switch status.
+
+    The 4457 Almazny mezzanine features an additional row of LEDs, one per output channel, without a fixed purpose. The associated ARTIQ module allows programming these directly through the channel \texttt{set} method.
+
 \newpage
 \sysdescsection