3.5 Basic Operations
3-29 ZM2376
Each display range of primary parameters is as follows:
L ±(0.000nH - 999.999MH)
C ±(0.00000pF - 9.99999kF)
R ±(0.000mΩ - 999.999MΩ)
Z 0.000mΩ - 999.999MΩ
Y 0.00nS - 9.99999kS
G ±(0.00nS - 9.99999kS)
The display range is limited by the measurement range.
The display range of L and C varies depending on the frequency.
Automatic selection of measurement parameters
Automatic selection rule of measurement parameters is as follows:
Phase angle θ of impedance Primary parameters Secondary parameters
+30 to +120° L Q
-30 to +30° R Q
-120 to -30° C D
Others Z θ
When a measurement parameter is automatically selected, the primary parameter, secondary
parameter, and equivalent circuit are automatically selected based on the phase angle or magnitude of
impedance. When the primary parameter is other than L, C, R, and Z, if a measurement parameter is
automatically selected, immediately after that, Z is selected as a primary parameter.
If a specific primary parameter, secondary parameter, or equivalent circuit is set, or if automatic
selection of equivalent circuit is disabled, automatic selection of measurement parameter is disabled
and the primary parameter, secondary parameter, and equivalent circuit at that time are set.
Negative display of L, C, R
From the relation of reactance X=ωL=-1/(ωC) and susceptance B=ωC=-1/(ωL), (here,
ω=2×π×frequency), when θ > 0 (X > 0), C is smaller than 0 (C < 0). Also, when θ < 0 (B > 0), L is
smaller than 0 (L < 0).
From the relation of R=|Z|cosθ, if θ > +90° or θ < -90° due to a measurement error, R is smaller than
0 (R < 0).
Parameters that can be selected by remote control only
By remote control, the followings can be specified, in addition to L, C, R, Z, Y, and G.
For details ZM2376 Instruction Manual (Remote Control)
:CALCulate1:FORMat command
Lp, Ls Inductance with equivalent circuit specified to parallel or series
Cp, Cs Capacitance with equivalent circuit specified to parallel or series
Rp, Rs Resistance with equivalent circuit specified to parallel or series
REAL Real part of immittance (Rs or Gp. Either one is displayed as measured value)
MLIN Magnitude of immittance (|Z| or |Y|. Either one is displayed as measured value)
Immittance is a concept combining impedance and admittance.
If these are selected, automatic selection of measurement parameter and equivalent circuit is disabled.
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