diff --git a/include/villas/nodes/signal_generator.hpp b/include/villas/nodes/signal_generator.hpp
index 91d4c02be..dabba3cec 100644
--- a/include/villas/nodes/signal_generator.hpp
+++ b/include/villas/nodes/signal_generator.hpp
@@ -51,7 +51,8 @@ struct signal_generator {
 		RAMP,
 		COUNTER,
 		CONSTANT,
-		MIXED
+		MIXED,
+		PULSE
 	} type; /**< Signal type */
 
 	double rate;			/**< Sampling rate. */
diff --git a/lib/nodes/signal_generator.cpp b/lib/nodes/signal_generator.cpp
index 3e57d736f..d3a6e6cdd 100644
--- a/lib/nodes/signal_generator.cpp
+++ b/lib/nodes/signal_generator.cpp
@@ -51,6 +51,8 @@ static enum signal_generator::SignalType signal_generator_lookup_type(const char
 		return signal_generator::SignalType::CONSTANT;
 	else if (!strcmp(type, "mixed"))
 		return signal_generator::SignalType::MIXED;
+	else if (!strcmp(type, "pulse"))
+		return signal_generator::SignalType::PULSE;
 
 	throw std::invalid_argument("Invalid signal type");
 }
@@ -72,7 +74,6 @@ static const char * signal_generator_type_str(enum signal_generator::SignalType
 
 		case signal_generator::SignalType::RAMP:
 			return "ramp";
-
 		case signal_generator::SignalType::COUNTER:
 			return "counter";
 
@@ -81,7 +82,8 @@ static const char * signal_generator_type_str(enum signal_generator::SignalType
 
 		case signal_generator::SignalType::MIXED:
 			return "mixed";
-
+		case signal_generator::SignalType::PULSE:
+			return "pulse";
 		default:
 			return nullptr;
 	}
@@ -346,6 +348,9 @@ int signal_generator_read(struct node *n, struct sample *smps[], unsigned cnt, u
 
 			case signal_generator::SignalType::MIXED:
 				break;
+			case signal_generator::SignalType::PULSE:
+				t->data[i].f = 5;
+				break;
 		}
 	}