Datasheet

Datasheet
TEK.COM4
Series 2400 SourceMeter
®
SMU Instruments
Built-In Test Sequencer (Source Memory List)
The Source Memory list provides faster and easier testing
by allowing you to setup and execute up to 100 different
tests that run without PC intervention.
• Stores up to 100 instrument configurations, each
containing source settings, measurement settings,
pass/fail criteria, etc.
• Pass/fail limit test as fast as 500 µs per point
• Onboard comparator eliminates the delay caused
when sending data to the computer for analysis
• Built-in, user definable math functions to calculate
derived parameters
Test 3
Test 2
V
I
Test 1
I
R
V
F2
V
F1
Test Pass/Fail Test If Passes Test If Fails Test
Test
1
Check V
F1
at 100mA
against pass/
fail limits
Go to Test 2
1. Bin part to
badbin
2. Transmit data
to computer
while handler
is placing
newpart
3. Return to
Test1
Test
2
Check V
F2
at
1A against
pass/fail limits
Go to Test 3
Test
3
Check leakage
current at
–500V and
test against
pass/fail limits
1. Bin part to good bin
2. Transmit readings
to computer while
handler is placing
newpart
3. Return to Test 1
Example test sequence
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
• 5 V, 300 mA power supply
• Optional expander accessory (2499-DIGIO) adds 16
digital I/O lines
The digital I/O interface is available on all Series 2400
SoourceMeter instruments except the 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 independent of a computer and GPIB.
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.
+
-
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 0 V.