Troubleshooting/Service 
332  UDC3500 Universal Digital Controller Product Manual  3/07 
7.8  Restoring Factory Configuration 
Introduction 
This procedure restores the configuration of the instrument back to the Factory Settings 
per Section 3.31.  
 
ATTENTION 
Restoring the factory configuration overwrites all user-entered configuration changes. This 
procedure cannot be undone; it is a one-way process.  
 
Table 7-16 explains how to restore Factory Configuration. 
Table 7-16  Restoring Factory Configuration 
Step  What to do 
1 
Turn off the power to the instrument for at least five seconds. 
 
2 
Turn the power back on and simultaneously press the 
Func-Loop 1/2 and 
 keys. This must be done while “TEST DONE” is being displayed. 
3 
If step 2 was performed correctly, the instrument will now display “UDC” 
[Upper] “UPDATE” [Lower]. 
4 
Press the 
Func-Loop 1/2 Key. The instrument will now display “DIS” [Upper]  
“RESTORE” [Lower]. 
5 
Press the 
 key. The instrument will now display “CONFIG” [Upper]  
“RESTORE” [Lower]. 
6 
Press the 
Func-Loop 1/2 Key. The instrument will now display “DOING” 
[Upper] “RESTORE” [Lower]. 
7 
When the instrument finishes the restore operation, it automatically resets 
itself and restarts in the product mode. The instrument configuration will 
now be the same as it was when the instrument left the factory and all user-
entered configurations since that time have been overwritten.