Tektronix KEITHLEY SourceMeter 2606B Reference Manual page 819

Model 2606B System SourceMeter® Instrument Reference Manual
When should I change the output-off state?
Carefully consider and configure the appropriate output-off state, source function, and
compliance limits before connecting the 2606B to a device that can deliver energy (for
example, other voltage sources, batteries, capacitors, solar cells, or other 2606B
instruments). Configure recommended instrument settings before making connections to the
device. Failure to consider the output-off state, source, and compliance limits may result in
damage to the instrument or to the device under test (DUT).
The 2606B instrument provides multiple output-off states. The multiple states are required because
different types of connected devices (or loads) require different behaviors from the 2606B when its
output is turned off.
For example, a passive device such as a diode is not affected by a 0 V source connected across its
terminals when the output is turned off. However, connecting a 0 V source to the terminals of a
battery causes the battery to discharge. Therefore, careful selection of the proper output-off state is
important to prevent damage to devices and instruments. This is especially true when the device can
deliver energy to the 2606B, such as a battery or capacitor or when another SourceMeter instrument
is connected across the output terminals. In these situations, use an output-off state that isolates the
instrument from the device by using one of the following commands:
•
smuX.source.offfunc = smuX.OUTPUT_DCAMPS
•
smuX.source.offfunc = smuX.OUTPUT_DCVOLTS
There are other guidelines to follow when connecting the output of multiple 2606B instruments to get
a larger current or voltage. Please refer to the following references for more information:
•
Multiple SMU connections
•
Keithley application notes on
How do I make contact check measurements?
For information about making contact check measurements, see
page 5-21) and
How can I change the line frequency or voltage?
The 2606B requires a line voltage of 100 V ac to 240 V ac (±10%) and a line frequency of 50 Hz or
60 Hz.
2606B-901-01 Rev. C November 2021
(on page 5-24)
tek.com/keithley
Contact check (on page 5-9).
Section 18: Frequently asked questions
Contact check measurements (on
18-5