14
First
Menu
Level
Mode
Number
Second
Menu
Level
Value
Range
Mode Description and Instructions
3231
Default=1117 – (First Sunday in November)
Values for rule driven custom daylight saving time for Mode 24-n=10. The
format is MMRD, where MM = month (1-12), R = instance of the select day of
the week (1-5 5=last instance), D = day of the week (1-7), where 1=Monday
and 7=Sunday. For example, the number 357 represents the last Sunday in
March, or 1117 represents the First Sunday in November. If the value >2000
then the right two digits represent the day of the month. The left two digits,
minus 20, equal the month. For example, March 15th = 2315, April 1st =
2401. The day of the year derived from this rule is stored in Mode 52-2.
If
the DST date is a fixed day (i.e. 15
th
of the month), then set this mode to
0 and enter the Julian day into Mode 52-2 instead.
See Mode 24-n=10 and Mode 45-20.
4 Troubleshooting
4.1 GPS Lock
Getting GPS lock on the Time Server is required for it to function. Most GPS lock issues come
down to issues with Antenna location, or cabling. If there are problems getting GPS lock (sync
indicator “S” does not appear on the display), try moving the antenna outside. If it does, try a
window and see if lock is maintained. If that works, move the antenna back to its original
location and see if lock is lost. This will help determine where lock can be received and where it
cannot. If no lock is achieved outdoors, then something is either wrong with the cabling or the
Time Server itself. Contact support.
4.2 Finding the IP Address
If the IP address of the Time Server is forgotten, there are a few ways to go about finding its IP
address. The first is to use a serial terminal program such as Hyper-Terminal or something
similar. Set the communications parameters of the terminal program to 115200,N81. Connect a
straight through cable between the computer and the Time Server and cycle power on the Time
Server. The IP address is printed during startup. If the Time Server is using DHCP, then it is
possible to look up the units IP address on the DHCP server by looking at the list of leases. Look
for a MAC address in the lease list that starts with 00:50:C2. This will likely be unique in the
DHCP lease list. The IP address associated with this MAC address should be tried. The third
possible way to determine the IP address is to simply check several of the devices using the Time
Server on the network to see how they are programmed. If they have a specific IP address
programmed into them for time keeping, then that may be the Time Server's base IP address. If a
domain name has been assigned to the Time Server, doing a command like “ping
timeserver.your-company.com” might show the time servers address as well.
