diff --git a/examples/time_test.py b/examples/time_test.py
new file mode 100644
index 000000000..b55a418fe
--- /dev/null
+++ b/examples/time_test.py
@@ -0,0 +1,43 @@
+from artiq.language.units import *
+from artiq.language.core import *
+from artiq.devices import corecom_serial, core
+
+class DummyPulse(MPO):
+	parameters = "name"
+
+	def print_on(self, t, f):
+		print("{} ON:{:4} @{}".format(self.name, f, t))
+
+	def print_off(self, t):
+		print("{}   OFF   @{}".format(self.name, t))
+
+	@kernel
+	def pulse(self, f, duration):
+		self.print_on(now(), f)
+		delay(duration)
+		self.print_off(now())
+
+class TimeTest(MPO):
+	parameters = "a b c d"
+
+	@kernel
+	def run(self):
+		with parallel:
+			with sequential:
+				self.a.pulse(100, 20*us)
+				self.b.pulse(200, 20*us)
+			with sequential:
+				self.c.pulse(300, 10*us)
+				self.d.pulse(400, 20*us)
+
+if __name__ == "__main__":
+	with corecom_serial.CoreCom() as com:
+		coredev = core.Core(com)
+		exp = TimeTest(
+			core=coredev,
+			a=DummyPulse(core=coredev, name="a"),
+			b=DummyPulse(core=coredev, name="b"),
+			c=DummyPulse(core=coredev, name="c"),
+			d=DummyPulse(core=coredev, name="d"),
+		)
+		exp.run()