Datasheet

SMU INSTRUMENTS
A Greater Measure of Confidence
www.keithley.com
1.888.KEITHLEY
(U.S. only)
Digital I/O Interface
The digital I/O interface can link a SourceMeter SMU instrument to many
popular component handlers, including Aetrium, Aeco, and Robotronics.
Other capabilities of the interface include:
• Tight systems integration for applications such as binning and sorting
• Built-in component handler interface
• Start of test and end of test signals
• 5V, 300mA power supply
• Optional expander accessory (Model 2499-DIGIO) adds 16 digital I/O lines
The digital I/O interface is available on all Series 2400 SoourceMeter
instruments except the Model 2401.
Trigger Link Interface
All SourceMeter SMU instruments include Keithley’s unique Trigger Link
interface which provides high-speed, seamless communications with many
of Keithley’s other instruments. For example, use the Trigger Link interface
to connect a SourceMeter SMU instrument with a Series 7000 Switching
System for a complete multi-point test solution. With Trigger Link, the
Series 7000 Switching Systems can be controlled by a SourceMeter SMU
instrument during a high-speed test sequence independent of a computer
and GPIB.
Optional Contact Check Function
The Contact Check function makes it simple to verify good connections
quickly and easily before an automated test sequence begins. This elimi-
nates measurement errors and false product failures associated with con-
tact fatigue, breakage, contamination, loose or broken connection, relay
failures, etc. Some capabilities of this function are:
• 350µs verification and notification process time
• The output of the SourceMeter SMU instrument is automatically shut
off after a fault and is not re-activated until good contact is verified,
protecting the device under test from damage and the operator from
potential safety hazards.
• 3 pass/fail threshold values: 2W, 15W, and 50W
• No energy passes through the device under test during the operation.
• Enabled either from the front panel or remotely over the GPIB
• 3 fault notification methods
Unique 6-Wire Ohms Technique
SourceMeter SMU instruments can make standard 4-wire, split Kelvin, and
6-wire, guarded ohms measurements and can be configured for either the
constant current or constant voltage method. The 6-wire ohms technique:
• Uses guard and guard sense leads in addition to the 4-wire sense and
source leads.
• Locks out parallel current paths when measuring resistor networks or
hybrid circuits to isolate the component under test.
• Allows users to configure and plot data easily from Series 2400
SourceMeter SMU instruments, making characterization of two, three,
and four terminal devices a snap.
+
-
I
meter
V
meter
V or I
Source
350µs
Contact Check
(optional)
GUARD
GUARD SENSE
IN/OUT HI
SENSE HI
SENSE LO
IN/OUT LO
Pass
Pass
Fail
Contact check option for 4-wire or 6-wire applications
Free LabTracer 2.0 device characterization software (downloadable)
+
-
GUARD
GUARD SENSE
IN/OUT HI
SENSE HI
SENSE LO
IN/OUT LO
DUT
R2
R1
R3
V
meter
I
meter
I
source
6-Wire Ohms Circuit. All test current flows through R1 because the
high current guard drives the voltage across R2 to 0V.
Series 2400
SourceMeter
®
SMU Instruments
Tightly coupled precision sourcing and measurement Tightly coupled precision sourcing and measurement