Keithley 4200-SCS Reference Manual page 1678

Appendix O: Advanced Applications
Advanced Applications
In this section, you will learn the following:
• Controlling a switch matrix — Demonstrates how to use a switch matrix to automatically
connect any instrument terminal to any test system pin.
• Sequencing tests on multiple devices — Demonstrates how to run a test sequence that
will utilize a switch matrix to automatically test all of the devices in the ivswitch project.
• Customizing a user test module (UTM) — Demonstrates how to modify a user module
using the Keithley User Library Tool (KULT).
The following equipment is required to complete this tutorial and obtain data that functionally
correlates with data included with the ivswitch sample project.
• 1 - Keithley Model 4200-SCS with a total of three SMUs (Preamps not required)
• 1 - Keithley Model 8006 Component Test Fixture
• 1 - Keithley Model 707A or 708 Switch Matrix
• 1 - Keithley Model 7072 or 7174A 8×12 matrix card
• 4 - Keithley Model 4200-MTRX-X cables (0 if using preamps)
• 12 - Keithley Model 4200-TRX-X cables (16 if using preamps)
• 1 - Keithley Model 7007 GPIB cable
• 1 - Keithley Model 236-ILC-3 safety interlock cable
• 1 - NPN transistor (2N3904 or similar)
• 1 - N-channel MOSFET (Temic SD210DE or similar)
• 1 - Capacitor (10 pF)
1 - Resistor (1 G Ω)
•
• 1 - Diode (1N970B or similar)
Controlling a switch matrix
This tutorial demonstrates how to use a switch matrix to automatically connect any instrument
terminal to any test system pin. The ivswitch sample project will be used to illustrate this
functionality. Before loading and running the ivswitch project, the 4200-SCS, switch matrix, and
component test fixture must be connected as illustrated in
The switch matrix is controlled by the 4200-SCS via the General Purpose Instrument Bus (GPIB)
bus. Use a Model 7007 GPIB cable to connect the Model 707 Switching Matrix to the 4200-SCS.
For connection details, refer to
7174A matrix card installed in slot 1 of a Model 707A Switching Matrix. The row-column
connection scheme is used for this tutorial.
A UTM is used to control the switch matrix. When a test sequence for a device is started, the UTM
will close the appropriate matrix crosspoints to connect the specified instrument terminals to the
appropriate test system pins. For details on UTMs, refer to the 4200-SCS Reference manual.
O-2
GPIB connections
Return to Section Topics
Model 4200-SCS Reference Manual
Figure O-1.
in Appendix B. This example shows a Model
4200-901-01 Rev. S / May 2017
Appendix O
Advanced Applications