Keysight U1271A Guia Del Usuario página 77

Using Smart Ω for Resistance Measurements (U1272A only)
Smart Ω (offset compensation) removes unexpected DC voltages within
instrument, at the input or at the circuit being measured, which will add to
resistance measurement errors. The bias voltage or leakage current is shown on
the secondary display.
Using the offset compensation method, the multimeter takes the difference
between two resistance measurements when two different test currents are
applied to determine if there are any offset voltages in the input circuitry. The
resultant displayed measurement corrects this offset, giving a more accurate
resistance measurement.
The Smart Ω is applicable for the 30 Ω, 300 Ω, 3 kΩ, 30 kΩ, and 300 kΩ
NOTE
resistance range only. The maximum correctable offset/bias voltage is
+50 mV/–30 mV for the 30 Ω range and +1.0 V/–0.2 V for the 300 Ω, 3 kΩ, 30 kΩ,
and 300 kΩ ranges.
If the DC voltage on the resistor is over the maximum correctable offset/bias
voltage,
1 To use the Smart Ω function, rotate the multimeter's rotary switch to
2 Probe the test points and read the display. The resistance measurement and
Keysight U1271A/U1272A User's Guide
is shown on the secondary display.
and press until
the bias voltage measurement is shown in the primary and secondary displays
respectively.
Press to switch between the leakage (μA) and bias (mV) display.
Dual
E xit
is shown on the display.
Making Measurements 2
Smart
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