Symmetricom TimeProvider 1000, User Manual

Page: 89 / 298

097-93100-01 Revision C – February, 2010 TimeCreator 1000 User’s Guide 89
Chapter 5 Provisioning
Provisioning the Input Reference
Example
To provision the TimeCreator 1000 as a subtending server, perform the following
steps:
1. Login at the Admin or Power-User level (see Login , on page 74).
2. Type
set tod-source dti
and press Enter .
3. Follow the steps in Provisioning the Input Reference , on page 89 to provision the
input reference ports.
Provisioning the Input Reference
When operating in normal (locked) mode, the TimeCreator 1000 uses the external
reference (GPS or DTI) to acquire the system’s frequency, DTI timestamp, and TOD
alignment. (See
Operating Modes , on page 29 for details about Normal and other
operating modes.) A GPS reference is connected to the GPS interface on the IMC
of root server. DTI references are connected to ports A and B of a subtending
server, and you can provision a priority level for each port. You can also provision
NTP to provide TOD, with frequency provided by the IOC clock. The TOD source
must be set prior to enabling the desired interface.
Setting the GPS Parameters
When the GPS reference is enabled, you can set the satellite position parameters
either automatically or manually. Use the command “set gps auto” to set the satellite
position parameters automatically. For manual mode, use the command “set gps
mode manual position <latitude> <longitude> <height> [mask <mask>]”. As the
command shows, in manual mode, you must specify the latitude, longitude, and
height. You can also specify the elevation mask which filters the satellites used by
the system. See the
Set GPS command description for additional examples and
details.
Note: The root server must be in verbose TOD mode. On the root
server, enter the following command: Type
set interface
tod-mode verbose
and press Enter .
Note: Symmetricom recommends using GPS in “auto” mode.