test params

test.py

@@ -1,5 +1,3 @@
-from zipfile import stringFileHeader
-
 if __name__ == "__main__":
     import sys
     if __package__ is None:
@@ -51,12 +49,18 @@ def _measure_both(monochromator: Bentham, lockin: SR830, shutter: ShutterProbe,
     sample_rate = 512
     timeout_s = 60
     timeout_interval = 0.5
-    lockin.run("SENS 17")  # 1 mV/nA
-    # lockin.run("OFLT 5")   # 3 ms
+    # lockin.run("SENS 17")  # 1 mV/nA
+    lockin.run("SENS 20")   # 10 mV/nA
+    # trigger on the falling edge, since the light comes through when the ref signal is low
+    # could of course also trigger on rising and apply 180° shift
+    lockin.run("RSLP 2")
     # since we dont expect changes in our signal, we can use large time constants and aggresive filter slope
     # for better signal to noise
+    # lockin.run("OFLT 5")   # 3 ms
+    lockin.run("RMOD 2")   # low noise (small reserve)
     lockin.run("OFLT 8")   # 100 ms
     lockin.run("OFSL 3")   # 24dB/Oct ms
+    lockin.run("SYNC 0")   # test without sync filter
     if AC:
         input("Plug the detector into lock-in port 'A/I' (front panel) and press enter > ")
         input("Make sure the laser is turned on and press enter > ")
@@ -74,7 +78,6 @@ def _measure_both(monochromator: Bentham, lockin: SR830, shutter: ShutterProbe,
             if t < 0: raise RuntimeError("Timed out waiting for buffer measurement to finish")
             arr = lockin.buffer_get_data(CH1=True, CH2=True)
             data_raw.append([wl, arr])
-            arr[1] += 180
             # calculate means, for theta use circular mean
             dR = np.mean(arr[0,:])
             sdR = np.std(arr[0,:])