097-93100-01 Revision C – February, 2010 TimeCreator 1000 User’s Guide 35
Chapter 1 Overview of the TimeCreator 1000
Outputs
Management Ethernet Port
The Management Ethernet connector provides connectivity to an Ethernet local
area network. Each Ethernet port has a unique internet protocol (IP) address and
once the IP address is set and a connection is made to a LAN, you can access the
TimeCreator 1000 (see Communicating Through the Ethernet Port, on page 72).
NTP Server Ethernet Port
The NTP server port serves the TimeCreator 1000’s system time to external NTP
clients. The NTP server option only works with a TOD-source of GPS. This Ethernet
port is configured separately from the management port (see Provisioning an NTP
Server, on page 104). The NTP server option requires the purchase of a license.
Outputs
The DTI link connectors use a single pair for transmission in both directions. The
server and client alternate data transmission therefore eliminating the need for a
crossover connection. The DTI server output is a Manchester encoded frame with
an underlying bit-rate of 5.12 Mbps locked to the DTI Master Clock. You can enable
or disable each output individually through user commands (see the command Set
Interface, on page 213). The TimeCreator 1000 automatically calibrates each DTI
Output when a DTI Client is connected eliminating the need to manually
compensate for cable lengths. The maximum cable length is 656 Ft. (200 m).
The TimeCreator 1000 provides a 10.24 MHz master clock signal and a 10 kHz
frame clock on the front panel.
Reference Inputs and TOD Sources
The TimeCreator 1000 can use either GPS or DTI signals as external input
references to acquire the system’s frequency, DTI timestamp, and TOD alignment.
The GPS reference signal input connects to a TNC connector on the IMC module
and the DTI reference signal input is connected to RJ-45 connectors labeled A/11
and B/12 on the rear panel. The Set Interface Priority
user command allows you to
set priority levels for the two DTI reference signals (see the command Set Interface,
on page 213).
Note: When ports A/11 and B/12 are provisioned as outputs, they are
referenced as ports 11 and 12.
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