Appendix C: LAN concepts and settings
Model 2657A High Power System SourceMeter® Instrument Reference Manual
C-20
2657A-901-01 Rev. B/December 2012
The timestamp, event identifier, IP address, and the domain name identify the incoming and outgoing
LXI trigger packets. The following table provides detailed descriptions for the columns in the
event log.
Event log descriptions
Column title Description
Example
Received
Time
Displays the date and time that the LAN
trigger occurred in UTC, 24-hour time
06:56:28.000 8 May 2011
Event ID
Identifies the
lan.trigger[
N
]
that
generates an event
LAN0 = lan.trigger[1]
LAN1 = lan.trigger[2]
LAN2 = lan.trigger[3]
LAN3 = lan.trigger[4]
LAN4 = lan.trigger[5]
LAN5 = lan.trigger[6]
LAN6 = lan.trigger[7]
LAN7 = lan.trigger[8]
From
Displays the IP address for the device that
generates the LAN trigger
localhost
192.168.5.20
Timestamp
A timestamp that identifies the time the event
occurred; the timestamp uses the following:
•
PTP
timestamp
•
Seconds
•
Fractional
seconds
The Model 2657A does not support the
IEEE Std 1588 standard; the values in this
field are always 0 (zero)
HWDetect
Identifies a valid LXI trigger packet
LXI
Sequence
Each instrument maintains independent
sequence counters:
•
One for each combination of UDP multicast
network interface and UDP multicast
destination port
•
One for each TCP connection
Domain
Displays the LXI domain number; the default
value is 0 (zero)
0
1523
Flags
Contain data about the LXI trigger packet;
values are:
•
1 - Error
•
2 - Retransmission
•
4 - Hardware
•
8 - Acknowledgments
•
16 - Stateless bit
Data
The values for this are always 0 (zero)
Accessing the event log from the command interface
You can access the event log from any remote command interface. The event log must be enabled
before LXI trigger events can be viewed. To enable the event log, send:
eventlog.enable = 1
To view the event log from a remote interface, send:
print(eventlog.all())
Summary of Contents for 2657A
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