GW Instek LCR Series - Page 228

LCR-8000 Series User Manual
228
Ae accuracy
If the test conditions are not normal standard, additional
calculations are required.
Ae = ±( Ab + Az + Av + Ad ) × Kc × Kt [%]
Ab
Measurement Frequency:.………………………..…….F[Hz], Fm[MHz]
Ab=0.08+(200/F-1) × 0.0222 …………………..……………..(F<200Hz)
Ab=0.08 ……………………………………….……...(200Hz≤F≤500kHz)
Ab=0.08+(Fm-0.5) x 0.0472 ……………………………….…(F>500kHz)
Az
Impedance Range [Ω] :.…………………..…………….F[Hz], Fm[MHz]
Zx≤100Ω:
Zx: measurement value of Z
Az=(100/Zx-1) x 0.001 x Km
Km=1+(100/F-1) x 0.112 …………………….….………… (F<100Hz)
Km=1 ………….………………………………..……………(F>1MHz)
Km=1+(Fm-1) x 3 …………….…………….………(100Hz≤F≤1MHz)
Zx>100Ω
Az=(Zx/100-1) x 0.00001 x Kn x Kp
Kn=1+(100/F-1) x 0.112 ……………………………………..(F<100Hz)
Kn=1 ….……………………………………….……..(100Hz≤F≤50kHz)
Kn=F/50000………………………….………………..……..(F>50kHz)
Kp=1 … ………………………………………………………(F≤1MHz)
Kp=1+(Fm-1) x 0.5 …………………………………………..(F>1MHz)
Av
Measurement Signal Level [Vac] :.………… ………….F[Hz], Fm[MHz]
Av=(Vac-0.5)² x 0.45 x (1+Fm/30) ……………………...…… (Vac>0.5V)
Av=(0.5/Vac-1) x 0.25 ……………………………....….……..(Vac≤0.5V)
Ad
Measurement Speed
Ad= ……………………………………………………………(SLOW2)
Ad=0 ..........................................................................................(SLOW)
Ad=0.1 ........................................................................................ (MED)
Ad=0.2 ........................................................................................ (FAST)
Ad=0.4 ........................................................................................ (MAX)
Kc
Cable length [m]
Kc=0 .......................................................................(0m, Fm:0~30MHz)
Kc=0.02+0.01 × Fm .............................................(0.5m,Fm:0~20MHz)
Kc=0.02+0.02 × Fm ................................................(1m,Fm:0~10MHz)
Kc=0.02+0.03 × Fm ..................................................(2m,Fm:0~5MHz)