The number of steps in the scan functions is now limited to a minimum of 5.

myWidgets.py

@@ -12,7 +12,7 @@ from PyQt5.QtCore import QTimer
 from PyQt5.QtWidgets import (QPushButton, QWidget, QVBoxLayout, QLCDNumber, QProgressBar, QLabel)
 import telnetlib
 import os
-
+import numpy as np
 
 #An example of a class
 class anal_control_signal(QWidget):
@@ -100,6 +100,8 @@ class anal_control_signal(QWidget):
         self.scan_step = self.scan_step + self.scan_direction
         self.AO.set_out(self.scan_step)
         
+        print(self.scan_step)
+        
         
     def PbarEvent(self):
         try:
@@ -132,7 +134,7 @@ class anal_control_signal(QWidget):
             a = float(self.scan_sb_start.val)
             dt = 5.0e-3
             T = float(self.scan_sb_period.val)
-            n = T/(2*dt)
+            n = int( T/(2*dt) )
         
             self.scan_direction = -abs(b-a)/n # this is the size in voltage of each step
             self.scan_step = float(self.sb.val) # from here it beggins
@@ -141,6 +143,9 @@ class anal_control_signal(QWidget):
             
             if self.scan_step > b or self.scan_step < a:
                 print('scan can not start outside scan range and scan start should be lower than scan stop')
+            elif n < 5:
+                print('%i steps are too few, you need at least 5 steps' % (n) )
+                pass
             else:
                 self.sb.setEnabled(False)
                 self.scan_button.setStyleSheet("background-color: green")
@@ -236,6 +241,7 @@ class burleighWM(QWidget):
                 self.layoutWM.addWidget(lcd)
                 self.dockWM.addWidget(self.layoutWM)
                     
-                    
+     
+      
                     
                 
\ No newline at end of file