Keithley 2600a series, Справочное руководство, Страница: 56 / 696

2-8 Return to Section Topics 2600AS-901-01 Rev. B / September 2008
Section 2: DUT Test Connections Series 2600A System SourceMeter® Instruments Reference Manual
4-wire remote sensing
When sourcing and/or measuring voltage in a low-impedance test circuit (see Figure 2-10 ), there
can be errors associated with IR drops in the test leads. Voltage source and measure accuracy are
optimized by using 4-wire remote sense connections. When sourcing voltage, 4-wire remote
sensing ensures that the programmed voltage is delivered to the DUT. When measuring voltage,
only the voltage drop across the DUT is measured.
Use 4-wire remote sensing for the following source-measure conditions:
• Sourcing and/or measuring voltage in low impedance (<1k
Ω
) test circuits.
• Enforce voltage compliance limit directly at the DUT.
Figure 2-10
Model 2602A/2612A four-wire connections (remote sensing)
Figure 2-11
Model 2636A four-wire connections (remote sensing)
<1k W
S LO
DUT
LO
CHANNEL A
LO G LO HI G G G HI
S S
KEITHLEY Series 2600A
HI
S HI