Fix isGeneratorRunning signal value.

Author: pablorcum

toolbox/src/bossdevice.m

@@ -336,7 +336,7 @@ function configure_time_port_marker(obj, sequence)
         end
 
         function generator_running = get.isGeneratorRunning(obj)
-            generator_running = getsignal(obj, 'Rate Transition2', 1);
+            generator_running = getsignal(obj, 'Unit Delay', 1);
         end
 
         function obj = arm(obj)