diff --git a/measure.py b/measure.py
index 2c1e5f625471a49504bc0f507d731e237520dc43..525b7c840803352411b28a63eaf3903c2911cbc0 100644
--- a/measure.py
+++ b/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:
diff --git a/test_ohmpi_card_3_15.py b/test_ohmpi_card_3_15.py
index e4e10683f8d5e75f9bc8d5f2532fc29e4f378801..6630608491528ed75feb72ad183693ee6adc65ec 100644
--- a/test_ohmpi_card_3_15.py
+++ b/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')
\ No newline at end of file
+change_config('config_default.py', verbose=False)
\ No newline at end of file