Cisco DNCS System Release 2.7 3.7 4.2 Installation Guide
2-8
Install and Configure the Digital System Time Kit to Use the
78-4011510-01 Rev C
Global Positioning System
Install the Digital System Time Kit,
Continued
6.
Is your DNCS an E250?
•
•
If yes, using the supplied 6-foot DB-9–to–DB-25 cable, connect the RS232
DB-9 port on the back panel of the ADL 1901 converter to the port labeled
B on the back panel of the E250 DNCS. Then, go to step 8.
•
If no, using the supplied 6-foot DB-9–to–DB-9 extension cable, connect the
RS232 DB-9 port on the back panel of the ADL 1901 converter to the port
labeled Serial TTYB on the back panel of the V440 or V445 DNCS. Then,
go to step 8.
7.
Using the supplied 6-ft DB-9–to–DB-25 cable, connect the RS232 DB-9 port on
the back panel of the ADL 1901 converter to port B on the DB-25 serial port
splitter cable.
8.
Connect one end of the power supply cable to the 12 VDC 1A port of the
ADL 1901 converter.
9.
Plug in the other end of the power supply cable into the power outlet.
10. Open an xterm window on the DNCS and log in as root user, if you have not
already done so.
11. At the root (#) prompt on the DNCS, type ls –l /dev/refclock-1 and press
Enter.
Note: The last character in the command “/dev/refclock-1” is the number 1.
Result: One the following results appears on the screen:
•
Note: The last character in the command “/dev/refclock-1” is the number 1.
Result: One the following results appears on the screen:
•
For E250, E450, and V880 systems:
lrwxrwxrwx 1 root root 45 May 22 2003 /dev/refclock-1
-> /devices/pci@1f,4000/ebus@1/se@14,400000:b,cu
-> /devices/pci@1f,4000/ebus@1/se@14,400000:b,cu
•
If refclock is missing:
/dev/refclock-1: No such file or directory
12. Does your system display the “No such file or directory” message?
•
If yes, go to step 13.
•
If no, go to step 16.
13. Type ln -s `ls -l /dev/cua/b | sed -e 's:^.*\.\./\.\.::'` /dev/refclock-1 and press
Enter.
Important: The characters must be entered exactly as shown above or the
Important: The characters must be entered exactly as shown above or the
link will not be correct.
14. Type ls –l /dev/refclock-1 and press Enter to verify that the link is correct.