GW Instek LCR-817 - Page 23

LCR-800 Series User Manual
40
The Error value of LCR-817/819 (Double the error value for
LCR-827/829/816/826)
l The formula for primary readout accuracy of C, R, L, L and Z..
C: 0.03% + 0.02% [ (1+Ka)
#
or (X/Ymax )
#
or (Ymin/X)
#
] (1+│ D│ )(1+Kb+Kc)
R: 0.03% + 0.02% [ (1+Ka)
#
or (X/Ymax )
#
or (Ymin/X)
#
] (1+│ Q│ )(1+Kb+Kc)
L: 0.03% + 0.02% [ (1+Ka)
#
or (X/Ymax )
#
or (Ymin/X)
#
] (1+ 1 /│Q│)(1+Kb+Kc)
|Z|: Ze = Treat R, L or C as the object under test conforming above formula:
example:
When the object under test is C, select:
Ze = 0.03% + 0.02% [ (1+Ka)
#
or (X/Ymax )
#
or (Ymin/X)
#
] (1+│ D│ )(1+Kb+Kc)
When the object under test is R , select:
Ze = 0.03% + 0.02% [ (1+Ka)
#
or (X/Ymax )
#
or (Ymin/X)
#
] (1+│ Q│)(1+Kb+Kc)
When the object under test is L , select:
Ze=0.03% + 0.02% [ (1+Ka)
#
or (X/Ymax )
#
or (Ymin/X)
#
] (1+ 1 /│Q│ )(1+Kb+Kc)
l The formulas of secondary readout accuracy for D, Q, and ? ..
Error
D with C
2count±0.0003 + 0.0002[(1+Ka)
#
or (X/Ymax)
#
or (Ymin/X)
#
] (1+│D│ +D×D)(1+Kb+Kc)
Q with R
2count±0.0003 + 0.0002[(1+Ka)
#
or (X/Ymax)
#
or (Ymin/X)
#
] (1+│Q│+Q×Q)(1+Kb+Kc)
Q with L
2count±0.0003 + 0.0002[(1+Ka)
#
or (X/Ymax)
#
or (Ymin/X)
#
] (1+│Q│+Q×Q)(1+Kb+Kc)
? with Z
?e=(180/p) x (Ze/100 )
1. if X≧Ymax, please select (X/Ymax)
2. if X≦Ymin, please select (Ymin/X)
3. if Ymin<X<Ymax, please select (1+Ka)
4. Ze is impedance error
5. ?e is ? error
LCR-800 Series User Manual
41
l The formulas for secondary readout accuracy of R with C& R with L.
Error
D≧1 2count + 0.02 %[(1+Ka)
*
or (Rx / Rmax)
*
or (Rmin/ Rx )
*
] (1+ 1/│D│ )(1+Kb+Kc)+0.03%
D≦1 2count + 0.02 %[(1+Ka)
**
or (Cx/Cmax)
**
or (Cmin/Cx)
**
] (1+ 1/│D│)(1+Kb+Kc)+0.03%
*: 1. If Rx≧Rmax, please select (Rx/Rmax)
2. if Rx≦Rmin, please select (Rmin/Rx)
3. if Rmin<Rx<Rmax, please select (1+Ka)
**: 1. If Cx≧ Cmax, please select (Cx/Cmax)
2. if Cx≦ Cmin, please select (Cmin/Cx)
3. if Cmin<Cx<Cmax, please select (1+Ka)
Where
Ka: Constant Voltage factor
Constant Voltage On , Ka = 2
Constant Voltage Off, Ka = 0
Kb: Test Speed factor
Speed = SLOW , Kb = 0
Speed = MEDIUM , Kb = 3
Speed = FAST ,Kb = 10
Kc: Frequency & RMS Voltage factor (refer to Table A)
X: X is value of the component being tested.
Y: Y is range constant (refer to Table B)
Rx and Cx are value of the component being tested.
Rmax, Rmin, Cmax and Cmin are ranges constant (refer to Table B).