CMU Program Examples 
1100.4903.12 7.7  E-4 
Tips and Tricks for CMU Programming 
The following section is intended to give hints for efficient programming and to point out frequent 
mistakes that may impair the system performance. 
 
1. Avoid Frequent DLL Swapping 
 
Many CMU function groups use the same commands enabling program parts to be reused in different 
contexts. As a consequence, commands may be repeated several times within a program that 
addresses several function groups. The CMU is designed for multi-mode operation, however, changing 
from one function group to another generally absorbs system capacity for loading new software 
modules. It is therefore advisable to group the commands so that the number of function group swaps 
is minimized.  
Instead of  GSM900MS_Sig: <Setting_A>  write GSM900MS_Sig: <Setting_A> 
  GSM400MS_Sig: <Setting_A>    GSM900MS_Sig: <Setting_B> 
 ...   ... 
  GSM900MS_Sig: <Setting_B>    GSM400MS_Sig: <Setting_A> 
  GSM400MS_Sig: <Setting_B>    GSM400MS_Sig: <Setting_B>