--- a/usb488.py	Tue Jan 19 17:13:21 2021 +1030
+++ b/usb488.py	Tue Jan 19 17:17:55 2021 +1030
@@ -338,9 +338,17 @@
         return result
 
     def ask(self, s, timeout = None):
+        '''Wrapper to send a command and wait for a reply'''
         self.write(s)
         return self.read(timeout = timeout)
 
+    def chkcmd(self, cmd):
+        '''Wrapper to send a command and check for an error'''
+        self.write(cmd)
+        if int(self.ask('*STB?')) & STATUS_EVE_QUEUE != 0:
+            self.write('*CLS')
+            raise BaseException('Command failed')
+
     def isConnected(self):
         """Check if the device is present"""