Pelco C1566M-C Switch User Manual


 
60 C1572M (9/05)
NOTE: The time adjustment that was made to system time as displayed in step 6 above is a temporary time adjustment. If you reboot the
CM9700-CC1 by pressing Ctrl+Alt+Del or exit the 9760 system by pressing Ctrl+Q, the time adjustment reverts to 0:0.0. As a result, you must edit
the startup.bat file to permanently program the total time adjustment indicated in the System box after the final time adjustment is made.
Instructions for editing the startup.bat file are provided in the Editing the Startup.bat File to Permanently Adjust System Time section.
Making Additional Adjustments to System Time
To make an additional adjustment to system time, do the following:
1. Wait 24 hours—or a multiple of 24 hours if necessary—since the last time adjustment was made, and then compare the system time
displayed on any monitor in the system with the RTC time. Note the difference in time for a 24-hour period and whether the system time is
ahead of or behind RTC time.
2. Using the CM9760-KBD, set system time at the top of the hour in 24-hour format when the RTC reaches the top of the hour.
3. At the CM9700-CC1 diagnostic screen, press Alt+L.
The System box displays the latest time adjustment values. For example, if a time adjustment of –2:30.00 was entered to slow system time
2 minutes and 30 seconds, the System box displays the following:
Last Adj. –2:30.0 Total –2.30.0
4. Enter a new time adjustment based on adding or subtracting time from the last time adjustment that was made. For example, when
comparing system time with RTC time after five 24-hour periods have passed since the last time adjustment was made and determining
that system time is running 10 seconds slow—an average of 2 seconds slower for each 24 hours of elapsed time—you can change the last
time adjustment by adding 2 seconds. If the last time adjustment was –02:30.00, the following time adjustment must be entered as follows
to add 2 seconds:
–02:28.0
Note that –02.28.0 is derived from the following equation: [(–02:30.0) + (00:02.0)] = –02.28.0
5. Press Enter.
The System box displays the last time adjustment and total time adjustment values. In the example, the System box displays the following:
Last Adj. –2:28.0 Total –4.58.0
Note that the total time adjustment is –4.58.0.
6. If necessary, continue to make additional time adjustments until the system clock and RTC are synchronized.
NOTE: The time adjustments that are made to system time are temporary time adjustments. If you reboot the CM9700-CC1 by pressing
Ctrl+Alt+Del or exit the 9760 system by pressing Ctrl+Q, the time adjustment values revert to 0:0.0. As a result, you must edit the startup.bat file
to permanently program the total time adjustment indicated in the System box after the final time adjustment is made. Instructions for editing
the startup.bat file are provided in the Editing the Startup.bat File to Permanently Adjust System Time section.