Chapter 2
Using the Port Selection and Domain Setup Window
Using Domains
Xgig Maestro Introduction Guide
November 2015
Version 8.1
Page 21
Using Domains
A domain is a logical set or subset of ports and TTL connectors that belong to the same
Sync Group. A domain must contain an even number of hardware analyzer ports. Thus, a
logical domain is an even number of analyzer ports between 2 and 64. The actual
maximum number of physical ports is determined by the number of Xgig analyzers concat-
enated together, the number of blades in each chassis, and the port density of each blade.
The physical maximum is four chassis, with four blades, with four ports on each blade, for
a maximum port count of 64.
A Sync Group can have up to 8 domains if all the domains have only BERT, Jammer,
Generator, Target Emulator, Load Tester, and Delay Emulator ports. One primary use for
these groups is to share triggers between ports. When using applications such as Xgig
Jammer, if you configure a port to look for an external trigger input, the only way to receive
such a trigger input is for the port to be part of a domain that gets triggered. And, if you
configure a port to create an external trigger output, that trigger is only useful if the port is
part of a domain, in which case it triggers that domain. If a domain is triggered, then all
ports in that domain receive that external trigger input.
Xgig BERT can also be in a domain. In BERT mode, a trigger can start or stop a BERT.
The BERT can trigger the domain when its capture stops or when a mismatch is detected.
In Latency mode, triggers are not used.
Xgig BERT, Jammer, Generator, Target Emulator, Load Tester, and Delay Emulator do not
operate under the Analyzer rules. You can choose whether or not:
•
To put any port in any domain
•
A port should accept or ignore triggers from the domain
•
A port should send triggers to the domain.
As an example to illustrate this, you could put an Xgig Jammer port in the same domain as
a pair of Xgig Analyzer ports. You could set the Xgig Jammer to give an external trigger
output as part of a Test Case. In this way, when the Jammer successfully triggers and Jams
what you want, this sends an external trigger from the Jammer port that would trigger the
domain and the Analyzer.
NOTE
Domain functionality applies only to BERT, Jammer, Load Tester, and Delay Emulator.
Target Emulator and Generator cannot add, create, remove, or edit domains.
NOTE
In Xgig Analyzer, all ports belonging to one Analyzer device are automatically part of
one domain. Furthermore, any triggering of that domain triggers all the Analyzer ports,
and any completion of a user-defined Trigger Condition in an Analyzer port triggers the
entire domain.
