Symmetricom TimeHub 5500 Reference Guide

Keywords
Keyword Description
142 TimeHub 5500 TL1 Reference Guide 097-55501-02 Issue 7 – January, 2005
Command Example:
RTRV-SYNC::CLK-4:SC1729:::PARAMETER=TCONST;
Response Example:
SYMMBITS 04-06-18 12:06:31
M SC1729 COMPLD
"CLK-4::TCONST = 49152"
;
TCONSTSEC (Time Constant for Secondary Oscillator)
This keyword sets the time constant for the secondary oscillator; it applies only to
the Clock card with the inferior oscillator when mixed clock oscillator types are used
in the TimeHub 5500 system.
This keyword can be used to set the loop tracking time constant for each input. The
assigned value applies only after the system is fully warmed up. This “slow” tracking
mode has a default value based upon the type of Clock card oscillator used. You
can change the time constant to one of several other values if the default value is
not appropriate given the characteristics of the reference inputs.
The keyword format is:
TCONSTSEC=<value>
Parameter Value Description
<value> 192 Time constant
768
3072
12288
49152
Parameter Value Description
<value> 102 Time constant
190
384
1824
24864

Symmetricom TimeHub 5500 Specifications

General

Brand	Symmetricom
Model	TimeHub 5500
Category	Data Loggers
Language	English