NF ZM2371 - Page 57

3.5 Basic Operations
3-27 ZM2371/ZM2372
Each display range of primary parameters is as follows:
L ±(0.000nH to 99.9999GH)
C ±(0.00000pF to 999.999kF)
R ±(0.000m to 999.999M)
Z 0.000m to 999.999M
Y 0.00nS to 9.99999kS
G ±(0.00nS to 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  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=L=1/(C) and susceptance B=C=1/(L), (here,
=2frequency), when  > 0 (X > 0), C is smaller than 0 (C < 0). Also, when  < 0 (B > 0), L
is smaller than 0 (L < 0).
From the relation of R=|Z|cos, if  > +90 or  < 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  Chapter 5 :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 generic name of impedance and admittance.
If these are selected, automatic selection of measurement parameter and equivalent
circuit is disabled.