T1 CrossConnect Installation & Operation Manual
6 – Configuration Using ISiCL
Version 2
6-16
GatesAir
Intraplex Products
6.14.1 DCS System Clock Setting
You can specify the clock source configuration for the DCS system clock by entering two values with
the
CLOCK
parameter. The first value specifies the primary clock source; and the second value, the
alternate clock source. The syntax of the command is
::SET:CLOCK=<primary>,<alternate>;
For example, in the command,
::SET:CLOCK=1,3;
port 1 is the primary clock source, and port 3 is the alternate clock source.
In this command, the primary clock source is an external source, and there is no alternate source:
::SET:CLOCK=EXT,NONE;
Because the DCS switches over to the internal oscillator to provide the source for the system clock
when both the primary and secondary clock sources fail, there is never any alternate clock source
when the internal oscillator is specified as the primary clock source, as shown in this command:
::SET:CLOCK=INT;
Although the alternate clock source is optional, the primary is not. Possible values for the
CLOCK
parameter when specifying the primary clock source are 1 to 6,
EXT
, or
INT
. Possible values for the
CLOCK
parameter when specifying the alternate clock source are 1 to 6 or
NONE
. If you do not choose
an alternate, you do not need to enter the
NONE
value:
::SET:CLOCK=EXT;
where the primary clock is an external source.
6.14.2 DCS Software Query for Clock Information
The ISiCL command
::CONFIG?:FLAGS5;
displays the primary and alternate clock sources, along
with other information about the DCS. A response to a
::CONFIG?:FLAGS5;
command would be
*OK
...
...
CLOCK=1,2
...
...
The ISiCL command
::STATUS?:COUNT4;
displays this information about the DCS system clock:
●
Clock source:
The requested clock (either user-requested primary clock source, or the alternate
source if the DCS made an internal clock switch due to port failure or exceeded clock slips)
●
Clock in use:
The actual clock which is latched into the DCS hardware and driving the system
clock
●
Clock changes:
The number of times the clock source has been changed
A response to a
::STATUS?:COUNT4;
command would be
Содержание Intraplex T1 DCS-9500 CrossConnect System
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