Keithley 2461 Reference Manual

Model 2461
Interactive SourceMeter® Instrument Reference Manual Section 3:
Functions and features
2461-901-01 A/November 2015 3-163
Using TSP-Net with any ethernet-enabled instrument
Refer to TSP command reference (on page 8-1) for details about the commands presented in this
section.
The Model 2461 LAN port is auto-sensing (Auto-MDIX), so you can use either a LAN crossover cable
or a LAN straight-through cable to connect directly from the Model 2461 to an ethernet device or to a
hub.
To set up communication to a remote ethernet-enabled instrument that is TSP
®
enabled:
1. Send the following command to configure TSP-Net to send an abort command when a
connection to a TSP instrument is established:
tspnet.tsp.abortonconnect = 1
If the scripts are allowed to run, the connection is made, but the remote instrument may be busy.
2. Send the command:
connectionID = tspnet.connect(ipAddress)
Where:
• connectionID is the connection ID that will be used as a handle in all other TSP-Net function calls.
• ipAddress is the IP address of the remote instrument.
See tspnet.connect() (on page 8-325) for additional detail.
To set up communication to a remote ethernet-enabled device that is not TSP enabled:
Send the command:
connectionID = tspnet.connect(ipAddress, portNumber, initString)
Where:
• connectionID is the connection ID that will be used as a handle in all other tspnet function calls.
• ipAddress is the IP address of the remote device.
• portNumber is the port number of the remote device.
• initString is the initialization string that is to be sent to ipAddress.
See tspnet.connect() (on page 8-325) for additional detail.
To communicate to a remote ethernet device from the Model 2461:
1. Connect to the remote device using one of the above procedures. If the Model 2461 cannot make
a connection to the remote device, it generates a timeout event. Use tspnet.timeout to set
the timeout value. The default timeout value is 20 s.
2. Use tspnet.write() or tspnet.execute() to send strings to a remote device. If you use:
 tspnet.write(): Strings are sent to the device exactly as indicated, and you must supply
any needed termination characters.
 tspnet.execute(): The Model 2461 appends termination characters to all strings that are
sent. Use tspnet.termination() to specify the termination character.
3. To retrieve responses from the remote instrument, use tspnet.read(). The Model 2461
suspends operation until the remote device responds or a timeout event is generated. To check if
data is available from the remote instrument, use tspnet.readavailable().
4. Disconnect from the remote device using the tspnet.disconnect() function. Terminate all
remote connections using tspnet.reset().

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