Added phase control testing for RF sources

Scripts/Miscellaneous/PhaseTest/README.md

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+Phase Test
+==========
+This script helps in testing the correct function of the phase programming 
+of RF sources. It measures a first and second, albeit phase shifted, 
+interval and calculatets the dot product of these to intervals. 
+The result should be a smooth full period of a cosine.
+

Scripts/Miscellaneous/PhaseTest/phase_exp.py

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+import numpy as N
+# connect PTS RF source to ADC card, set to generate a few MHz
+# result should be a fulle period of sine/cosine
+def experiment():
+    #step = 0.36 # for PTS 500
+    step = 0.225 # for PTS 310
+    for i in list(xrange(1)): # number of periods
+        samples = 2048
+        print samples
+        for phase in N.arange(0,360,step):
+            #phase=ph
+            e=Experiment()
+            #e.set_frequency(1e6,0)
+            e.wait(20e-6)
+            e.set_description("phase", phase)
+            e.set_description("i", i)
+            e.set_phase(0.0)
+            #e.loop_start(1)
+            e.wait(20e-6)
+            e.record(samples, 20e6,sensitivity=10)
+            e.set_phase(phase)
+            e.wait(20e-6)
+            #e.loop_end()
+            e.record(samples, 20e6,sensitivity=10)
+            yield e

Scripts/Miscellaneous/PhaseTest/phase_res.py

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+import numpy
+
+def result():
+    o=MeasurementResult("overview")
+    for r in results:
+        if r is None: continue
+        #print r
+        data["single scan"]=r
+        phase = r.get_description("phase")
+        i = int(r.get_description("i"))
+        r1=numpy.array(r.get_result_by_index(0).y[0], dtype="Float64")
+        r2=numpy.array(r.get_result_by_index(1).y[0], dtype="Float64")
+        #print r1
+        r1-=r1.mean()
+        r1/=r1.std()
+        r2-=r2.mean()
+        r2/=r2.std()
+        
+        c = numpy.dot(r1, r2)
+        print c
+        o[phase+360*i]=AccumulatedValue(c)
+        
+        data["overview"]=o