Section 2: General operation
Model 2651A High Power System SourceMeter® Instrument Reference Manual
2-46
2651A-901-01 Rev. A / March 2011
Figure 14: Contact check measurement connections
G
G G G
S
LO
SENSE/GUARD
S
HI
LO
HI
OUTPUT
40V, 50A MAX.
S LO
LO
HI
S HI
DUT
R
S
R
C
R
S
R
C
R
S
R
C
Contact
Resistance
Cable/Relay
Resistance
Multiple SMU connections
CAUTION
Carefully consider and configure the appropriate output-off state, source, and compliance levels
before connecting the Model 2651A High Power System SourceMeter
®
Instrument to a device that
can deliver energy such as other voltage sources, batteries, capacitors, solar cells, or other System
SourceMeter instruments. Program recommended instrument settings before making connections to
the device. Failure to consider the output-off state, source, and compliance levels may result in
damage to the instrument or to the device under test.
The figure below shows how to use the SMUs of two Model 2651A instruments to test a 3-terminal
device, such as an N-channel JFET (see
(on page 6-53) for information on
using multiple Model 2651A instruments). A typical application is for the subordinate Model 2651A to
source a range of gate voltages, while the master Model 2651A sources voltage to power the device
and measures current at each gate voltage.