Endace DAG 4.2S, Руководство пользователя

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EDM01-02: DAG 4.2S Card User Guide
©2005 24 Version 7: May 2006
6.1 Configurations Tool Usage
Description The DUCK is very flexible, and can be used in several ways, with or
without an external time reference source. It can accept synchronisation
from several input sources, and can 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.
dag@endace:~$ dagclock –d dag0
muxin rs422
muxout none
status Synchronised Threshold 596ns Failures 0 Resyncs 0
error Freq -30ppb Phase -60ns Worst Freq 75ppb Worst Phase 104ns
crystal Actual 100000028Hz Synthesized 67108864Hz
input Total 3765 Bad 0 Singles Missed 5 Longest Sequence Missed 1
start Thu Apr 28 13:32:45 2005
host Thu Apr 28 14:35:35 2005
dag Thu Apr 28 14:35:35 2005