diff --git a/artiq/examples/phaser/repository/demo_2tone.py b/artiq/examples/phaser/repository/demo_2tone.py
new file mode 100644
index 000000000..5bcfe9962
--- /dev/null
+++ b/artiq/examples/phaser/repository/demo_2tone.py
@@ -0,0 +1,46 @@
+from artiq.experiment import *
+
+
+class SAWGTest(EnvExperiment):
+    def build(self):
+        self.setattr_device("core")
+        self.setattr_device("led")
+        self.setattr_device("ttl_sma")
+
+        self.setattr_device("sawg0")
+        self.setattr_device("sawg1")
+        self.setattr_device("sawg2")
+        self.setattr_device("sawg3")
+
+    @kernel
+    def run(self):
+        self.core.break_realtime()
+        self.ttl_sma.output()
+
+        while True:
+            t_up = t_hold = t_down = 800*ns
+            a1 = .3
+            a2 = .4
+            order = 3
+
+            delay(20*ms)
+            self.sawg0.frequency0.set(10*MHz)
+            self.sawg0.phase0.set(0.)
+            self.sawg0.frequency1.set(1*MHz)
+            self.sawg0.phase1.set(0.)
+            self.sawg0.frequency2.set(9*MHz)
+            self.sawg0.phase2.set(0.)
+            with parallel:
+                self.sawg0.amplitude1.smooth(.0, a1, t_up, order)
+                self.sawg0.amplitude2.smooth(.0, a2, t_up, order)
+            self.sawg0.amplitude1.set(a1)
+            self.sawg0.amplitude2.set(a2)
+            delay(t_hold)
+            with parallel:
+                self.sawg0.amplitude1.smooth(a1, .0, t_down, order)
+                self.sawg0.amplitude2.smooth(a2, .0, t_down, order)
+            self.sawg0.amplitude1.set(.0)
+            self.sawg0.amplitude2.set(.0)
+
+            self.sawg1.amplitude1.set(.0)
+            self.sawg1.amplitude2.set(.0)