LeCroyOscilloscope: do not report 1M ohm coupling as available when a…

… ProLink input is active. Fixes #562.
ngscopeclient · Mar 9, 2022 · 2341209 · 2341209
1 parent b81e4fa
commit 2341209
Showing 1 changed file with 16 additions and 3 deletions.
diff --git a/scopehal/LeCroyOscilloscope.cpp b/scopehal/LeCroyOscilloscope.cpp
@@ -1261,11 +1261,24 @@ void LeCroyOscilloscope::DisableChannel(size_t i)
 	}
 }
 
-vector<OscilloscopeChannel::CouplingType> LeCroyOscilloscope::GetAvailableCouplings(size_t /*i*/)
+vector<OscilloscopeChannel::CouplingType> LeCroyOscilloscope::GetAvailableCouplings(size_t i)
 {
 	vector<OscilloscopeChannel::CouplingType> ret;
-	ret.push_back(OscilloscopeChannel::COUPLE_DC_1M);
-	ret.push_back(OscilloscopeChannel::COUPLE_AC_1M);
+
+	//For WaveMaster/SDA/DDA scopes, we cannot use 1M ohm coupling if the ProLink input is selected
+	bool isProBus = true;
+	if(HasInputMux(i))
+	{
+		if(GetInputMuxSetting(i) == 0)
+			isProBus = false;
+	}
+
+	if(isProBus)
+	{
+		ret.push_back(OscilloscopeChannel::COUPLE_DC_1M);
+		ret.push_back(OscilloscopeChannel::COUPLE_AC_1M);
+	}
+
 	ret.push_back(OscilloscopeChannel::COUPLE_DC_50);
 	ret.push_back(OscilloscopeChannel::COUPLE_GND);
 	return ret;