Monitoring and Operating the Controller 
270  UDC3500 Universal Digital Controller Product Manual  3/07 
Real Time Clock 
Select “Real Time Clock” from the “Maintenance Data” menu.  
 
This screen only appears in instruments that have the Real Time Clock option. The Real 
Time Clock Screen shows both the clock time in the controller and the clock time in your 
PC.  Pressing the 
“Set Clock” button will set the controller to the same settings as in 
your PC. It is recommended that units using Email use only this screen to set the Real 
Time Clock, as that will ensure that the clock and time zone settings used to time-stamp 
Emails are correct. 
See Section 
3.25 for other information about the Real Time Clock option. 
 
ATTENTION 
The Real Time Clock will not automatically adjust for Daylight Savings Time; it must be done manually. 
The Real Time Clock will automatically adjust for Leap Years to make February 29 days long. 
Instruments that do not have the Real Time Clock option will always send Email time-stamped with the 
date that the Ethernet Software in the instrument was last modified. Instruments with the Real Time 
Clock option will send Email time-stamped with the current time in the controller. 
 
 
Figure 4-21  Real Time Clock Maintenance Screen