Endace DAG 3.7D, User Manual

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EDM01-06: DAG 3.7D Card User Guide
©2006 18 Version 1: March 2006
Configuration
Tools
Description
The DUCK is very flexible, and can be used with or without an external
time reference source. It can accept synchronisation from several input
sources, and also be made to drive its synchronisation output from one of
several sources.
Synchronisation settings are controlled by the
dagclock
utility.
Example
dag@endace:~$ dagclock -h
Usage: dagclock [-hvVxk] [-d dag] [-K <timeout>] [-l
<threshold>] [option]
-h --help,--usage this page
-v --verbose increase verbosity
-V --version display version information
-x --clearstats clear clock statistics
-k --sync wait for duck to sync before
exiting
-d dag DAG device to use
-K timeout sync timeout in seconds,
default 60
-l threshold health threshold in ns, default
596
Option:
default RS422 in, none out
none None in, none out
rs422in RS422 input
hostin Host input (unused)
overin Internal input (synchronise to
host clock)
auxin Aux input (unused)
rs422out Output the rs422 input signal
loop Output the selected input
hostout Output from host (unused)
overout Internal output (master card)
set Set DAG clock to PC clock
reset Full clock reset. Load time
from PC, set rs422in, none out
By default, all DAG cards listen for synchronisation signals on their RS-
422 port, and do not output any signal to their RS-422 port