Fixes error as sampling rate is expressed in ms and sleep in seconds

measure.py

@@ -60,7 +60,7 @@ class OhmPiHardware:
             while self.tx_sync.is_set():
                 cur_time=start_time
                 _readings.append([time.gmtime() - start_time, self.tx.current, self.rx.voltage])
-                time.sleep(cur_time+sampling_rate-time.gmtime())
+                time.sleep(cur_time+sampling_rate/1000.-time.gmtime())
             return np.array(_readings)
 
         if sampling_rate is None:

test_ohmpi_card_3_15.py

@@ -32,7 +32,7 @@ print(f'Dev. {100. * np.std(r)/np.mean(r):.1} %')
 from OhmPi.measure import OhmPiHardware
 from utils import change_config
 
-change_config('config_ohmpi_card_3_15.py')
+change_config('config_ohmpi_card_3_15.py', verbose=False)
 k = OhmPiHardware()
 k._vab_pulse(vab=12, length=2., polarity=1)
-change_config('config_default.py')
+change_config('config_default.py', verbose=False)
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