diff --git a/lppinstru/discovery.py b/lppinstru/discovery.py
--- a/lppinstru/discovery.py
+++ b/lppinstru/discovery.py
@@ -308,7 +308,7 @@ class Discovery(object):
 #############################################################
 #        AnalogOut
 #############################################################
-    def analog_out_gen(self,frequency=1000, shape='Sine', channel=0, amplitude=1.0, offset=0.0,phase=0.0):
+    def analog_out_gen(self,frequency=1000, shape='Sine', channel=0, amplitude=1.0, offset=0.0,phase=0.0, syncOnTrigger=False, triggerFrq=1.0):
         self.__libdwf.FDwfAnalogOutConfigure(self.__hdwf, c_int(channel), c_bool(False))
         self.__libdwf.FDwfAnalogOutNodeEnableSet(self.__hdwf, c_int(channel), AnalogOutNodeCarrier, c_bool(True))
         self.__libdwf.FDwfAnalogOutNodeFunctionSet(self.__hdwf, c_int(channel), AnalogOutNodeCarrier,  c_int(shapes.get(shape)))
@@ -317,6 +317,14 @@ class Discovery(object):
             self.__libdwf.FDwfAnalogOutNodeAmplitudeSet(self.__hdwf, c_int(channel), AnalogOutNodeCarrier, c_double(self.__limits.genAmplitude(amplitude)))
         self.__libdwf.FDwfAnalogOutNodeOffsetSet(self.__hdwf, c_int(channel), AnalogOutNodeCarrier, c_double(self.__limits.genOffset(offset)))
         self.__libdwf.FDwfAnalogOutNodePhaseSet(self.__hdwf, c_int(channel), AnalogOutNodeCarrier, c_double(phase))
+        if syncOnTrigger:
+            self.analog_out_set_trigger(channel)
+            self.__libdwf.FDwfAnalogOutRepeatSet(self.__hdwf, c_int(channel),c_int(0))
+            if frequency >= triggerFrq:
+                runDuration = triggerFrq
+            else:
+                runDuration = triggerFrq/frequency
+            self.__libdwf.FDwfAnalogOutRunSet(self.__hdwf, c_int(channel),c_double(runDuration))
         self.__libdwf.FDwfAnalogOutConfigure(self.__hdwf, c_int(channel), c_bool(True))
 
     def analog_out_gen_arbit(self,samplesBuffer ,repeatingFrequency=100, channel=0, amplitude=1.0, offset=0.0):
@@ -333,14 +341,15 @@ class Discovery(object):
         self.__libdwf.FDwfAnalogOutNodeDataSet(self.__hdwf, c_int(channel), AnalogOutNodeCarrier, buf, c_int(cnt))
         self.__libdwf.FDwfAnalogOutConfigure(self.__hdwf, c_int(channel), c_bool(True))
 
+    def analog_out_set_trigger(self, channel=0, trigSrc=trigsrcExternal1, trigRepeat=True):
+        self.__libdwf.FDwfAnalogOutTriggerSourceSet(self.__hdwf, c_int(channel), trigSrc)
+        self.__libdwf.FDwfAnalogOutRepeatTriggerSet(self.__hdwf, c_int(channel), c_bool(trigRepeat))
 
     def __del__(self):
         if self.__opened:
             self.__libdwf.FDwfDeviceClose(self.__hdwf)
 
 
-
-
 if __name__ == '__main__':
     print("open first dev")
     test = Discovery()