Remote Control
R&S
®
ZNC
363
User Manual 1173.9557.02 ─ 13
intended to be the LAN-based successor to GPIB, combining the advantages of Ethernet
with the simplicity and familiarity of GPIB.
5.6.1 LXI Classes and LXI Functionality
LXI-compliant instruments are divided into three classes, A, B and C, with the functionality
of the classes hierarchically based one upon the other:
●
Class C
instruments are characterized by a common LAN implementation, including
an ICMP ping responder for diagnostics, see
.
The instruments can be configured via the
; a LAN Configura-
tion Initialize (LCI) mechanism resets the LAN configuration. The LXI class C instru-
ments shall also support automatic detection in a LAN via the VXI-11 discovery pro-
tocol and programming by means of IVI drivers.
●
Class B
adds IEEE 1588 Precision Time Protocol (PTP) and peer-to-peer commu-
nication to the base class. IEEE 1588 allows all instruments on the same network to
automatically synchronize to the most accurate clock available and then provide time
stamps or time-based synchronization signals to all instruments with exceptional
accuracy.
●
Class A
instruments are additionally equipped with the eight-channel hardware trig-
ger bus (LVDS interface) defined in the LXI standard.
Instruments of classes A and B can generate and receive software triggers via LAN mes-
sages and communicate with each other without involving the controller.
The network analyzer complies with LXI class C. In addition to the general class C fea-
tures described above, it provides the following LXI-related functionality:
●
Integrated "Remote LXI" dialog for LXI activation and reset of the LAN configuration
(LAN Configuration Initialize, LCI); see
chapter 4.6.7, "Remote LXI (Dialog)"
For information about the LXI standard refer to the LXI website at
, issue no. 190 - 2006/II".
LXI Configuration