NF ZM2371, Instruction Manual

Page: 240 / 255

9.1 Specifications
9-5 ZM2371/ZM2372

Kz: Residual impedance coefficient
Frequency Kz [%]
DC (0Hz), Frequency
≦
120Hz
(0.003 + Kc) / Zx[  ]
120Hz < Frequency
≦
1kHz
(0.005 + Kc) / Zx[  ]
1kHz < Frequency
≦
10kHz (0.005 + 0.002 × Frequency [kHz]+ Kc) / Zx[  ]
10kHz < Frequency
≦
100kHz
(0.0025 × Frequency [kHz] + Kc) / Zx[

]
Cable length coefficient Kc = 0.001  Fequency [kHz]  (Cable length [m])
2
Use the next table when all of two conditions listed below are satisfied. In this case,
unless Az exceeds 10 [%], the measurement accuracy is not a supplementary value
but a guaranteed value.
Measurement range Zx is 10

.
Impedance magnitude|Z| is less than 0.45  .
Frequency Kz [%]
DC (0Hz), Frequency
≦
10kHz
(0.05 + Kc) / Zx[  ]
10kHz < Frequency
≦
100kHz (0.1 + 0.002 × Frequency [kHz] + Kc) / Zx[  ]

Ky: Residual admittance coefficient
Frequency Ky [%]
DC, Frequency
≦
120Hz
Zx[  ] / ( 3 × 10 8 )
120Hz < Frequency
≦
100kHz
Zx[

] × Frequency [kHz] / ( 3 × 10 7 )

K
T
: Temperature-dependent coefficient
Ambient temperature (T °C)
K
T
0 to +18 1 + 0.1 × (18-T)
+18 to +28 1
+28 to +40 1 + 0.1 × (T-28)

K
B
: DC bias coefficient
Internal DC
bias
Measurement
range Zr
KB [%]
Frequency
≦
1kHz
1kHz <
Frequency
≦
10kHz
Frequency
>10kHz
Disabled All ranges 0 0 0
Enabled
(*1)
1M  0.005 0.02 0.02
100k  0.002 0.003 0.01
100  to 10k  0.001 0.002 0.01
10
 0.01 0.01 0.02
100m  , 1  0.05 0.1 0.2
*1: when open compensation and short compensation are performed at the conditions
of internal DC bias enabled and the bias voltage 0V
At all times, K
B
= 0 for the direct-current resistance Rdc.