Keithley 2461 Reference Manual

Model 2461
Interactive SourceMeter® Instrument Reference Manual Section 3:
Functions and features
2461-901-01 A/November 2015 3-153
Master and subordinates
In a TSP-Link
®
system, one of the nodes (instruments) is the master node and the other nodes are
the subordinate nodes. The master node in a TSP-Link
®
system can control the other nodes
(subordinates) in the system.
A TSP-Link system can be stand-alone or computer-based.
In a stand-alone system, scripts are loaded into the instruments. You can run a script from the front
panel of any instrument (node) connected to the system. When a script is run, all nodes in the system
go into remote operation. When the script is finished running, all the nodes in the system return to
local operation, and the master/subordinate relationship between nodes is dissolved.
In a computer-based system, you can use a computer and a remote interface to communicate with a
single node in the system. This node becomes the interface to the entire system. When a command
is sent through this node, all nodes go into remote operation. The node that receives the command
becomes the master and can control all of the other nodes, which become its subordinates. In a
computer-based system, the master/subordinate relationship between nodes can only be dissolved
by performing an abort operation. For more information about remote interfaces, see Remote
communications interfaces.
When linking with earlier models of Keithley instruments such as the Model 2600B, make sure to use
the Model 2461 as the master node and the earlier instruments as subordinates.
Initializing the TSP-Link system
The TSP-Link
®
system must be initialized after configuration changes. You need to initialize the
system after you:
• Turn off power or reboot any instrument in the system
• Change node numbers on any instrument in the system
• Rearrange or disconnect the TSP-Link cable connections between instruments
If initialization is not successful, you can check the event log for error messages that indicate the
problem. Some typical problems include:
• Two or more instruments in the system have the same node number
• There are no other instruments connected to the instrument performing the initialization
• One or more of the instruments in the system is turned off
• The actual number of nodes is less than the expected number

Keithley 2461 Specifications

General

Maximum Current	7 A
Power	100 W
Resolution	6.5 digits
Source Measure Unit (SMU)	Yes
DC Voltage	100 V
Maximum Voltage	100 V
Display	5-inch capacitive touchscreen
Connectivity	USB, GPIB
Software	TSP
DC Current	7 A
Current Source Range	0 to 7 A
Voltage Measurement Range	100 mV to 100 V
Current Measurement Range	10 nA to 7 A
Voltage Measurement Resolution	100 nV