3.5 Basic Operations
3-32 ZM2376
Negative display of Q, D, R, G
When the phase angle of impedance θ > +90° or θ < -90° due to a measurement error, the loss angle
seems to be a negative value, and thus the Q, D, Rs (ESR), Rp, and G become negative values. Also,
Rdc may become a negative value due to a measurement error of voltage or current.
Parameters that can be selected by remote control only
The following options can be selected by remote control only. They cannot be selected from the
panel.
For details ZM2376 Instruction Manual (Remote Control)
:CALCulate2:FORMat command
IMAG Imaginary part of immittance (X or B)
REAL Real part of immittance (either of Rs, G, or Rdc)
Immittance is a concept combining impedance and admittance.
DC (Direct-current) resistance Rdc
When Rdc is selected, ZM2376 measures the DC resistance after measuring the AC impedance. This
function is mainly intended to measure the DC resistance of coil, and is not suited for the
measurement of the insulation resistance of capacitor.
When the DC bias output is turned on, the DC resistance Rdc cannot be selected.
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