Tektronix KEITHLEY System SourceMeter 2636B Reference Manual page 125

Series 2600B System SourceMeter® Instrument Reference Manual
When sourcing current with remote sense, the instrument relies on the voltage detected with the
sense lines to properly limit the voltage across the device-under-test. If a sense line becomes
disconnected from its corresponding force line, an erroneous voltage is sensed and the voltage
across the device may exceed the programmed source limit voltage, possibly causing damage to the
device or test fixture.
In both cases, the voltage is not measured correctly if a sense lead becomes disconnected from its
corresponding force lead.
Even with the overvoltage protection set to the lowest value (2 V), never touch anything
connected to the terminals of the Series 2600B when the output is on. Always assume that a
hazardous voltage (greater than 30 V
to the device under test or external circuitry, do not set the voltage source to levels that
exceed the value that is set for overvoltage protection.
For the Models 2601B, 2602B, 2611B, 2612B, 2635B, and 2636B, you can use contact check to
verify that the sense leads are connected before enabling remote sensing or before turning on the
output. Refer to
Use 4-wire remote sensing for the following source-measure conditions:
•
Sourcing or measuring voltage in low impedance (<1 kΩ) test circuits.
•
Enforcing voltage compliance limit directly at the DUT.
When using 4-wire local sensing connections, make sure to properly configure the Series 2600B
Sense mode selection
2600BS-901-01 Rev. E / January 2019
RMS
Contact check measurements
(on page 4-52).
Figure 36: Four-wire connections (remote sensing)
) is present when the output is on. To prevent damage
(on page 4-22).
Section 4: Sourcing and measuring
4-33