Device Connections - Keithley Interactive SourceMeter 2450 User Manual

Section 7: Measuring I-V characteristics of FETs
For GPIB communication from the computer to the Model 2450 instruments, you only need one cable
from the GPIB interface to one of the Model 2450 IEEE-488 interfaces (Model 2450 #1 in the figure
above).
Set the TSP-Link node of Model 2450 #1 to node 1 and the TSP-Link node of Model 2450 #2 to
node 2.
To set the Model 2450 TSP-Link nodes from the front panel:
1. Press the MENU key.
2. Under System, select Communication. The SYSTEM COMMUNICATION window opens.
3. On the TSP-Link tab, next to Node, enter the node number of this instrument.
4. Select OK.
5. Select Initialize.
6. Press the HOME key to return to the home screen.
Repeat these steps for all Model 2450 instruments in your TSP-Link network.

Device connections

To perform a drain family of curves, configure both Model 2450 instruments to source voltage and
measure current.
In this circuit, you connect the Force HI terminal of Model 2450 #2 to the gate of the MOSFET, and
connect the Force HI terminal of Model 2450 #1 to the drain.
You connect the source terminal of the MOSFET to the Force LO terminals of both Model 2450
instruments. You need a third Model 2450 if you want to source and measure from all three terminals.
The following figure shows an I-V test configuration for a MOSFET using two Model 2450
instruments.
7-4
Model 2450 Interactive SourceMeter® Instrument User's Manual
Figure 31: Connections for the TSP command set
2450-900-01 Rev. C / December 2013