Model 2651A High Power System SourceMeter® Instrument Reference Manual
Appendix C: LAN concepts and settings
2651A-901-01 Rev. A / March 2011
C-15
Dead socket connection
The dead socket termination (DST) port is used to terminate all existing Ethernet connections. A dead
socket is a socket that is held open by the instrument because it has not been properly closed. This
most often happens when the host computer is turned off or reboots without first closing the socket.
This port cannot be used for command and control functions.
Use the dead socket termination port to manually disconnect a dead session on any open socket. All
existing Ethernet connections will be terminated and closed when the connection to the dead socket
termination port is closed.
Telnet connection
Telnet is similar to raw socket and is used when the user needs to interact directly with the
instrument, typically for debugging and troubleshooting. Telnet requires a separate telnet program.
The Model 2651A supports the Telnet protocol that you can use over a TCP/IP connection to issue
commands to the instrument. You can use a Telnet connection to interact with scripts or issue
commands in real-time.
Configuring a Telnet connection
NOTE
This procedure uses HyperTerminal, which is available with the Microsoft
®
Windows
®
XP operating
system. Consult the help system for your version of Microsoft Windows to identify a compatible tool.
To connect with the Model 2651A using HyperTerminal on a Windows XP system:
1. On the host computer, click
Start > Accessories > Communications > HyperTerminal
. The
Connection Description dialog box will open.
Figure 124: Connection description dialog box
My Instrument
