12 | Keysight | 4285A Precision LCR Meter – Data Sheet
N accuracy factors
N1 and N2 in the An equations have the following values:
Table 1-2. N accuracy factors
Frequency(f)
N
N
2
1
75 kHz ≤ f ≤ 200 kHz
200 kHz < f ≤ 3 MHz
3 MHz < f ≤ 5 MHz
5 MHz < f ≤ 30 MHz
0.15
0.08
.15
0.15
0.15
0.38
0.38
0.30
Cable length factor
Add the following cable length factor Ac to the measurement accuracy when the cable
length is set to 1 m (for 16048A) or 2 m (for 16048D) in CABLE field, after performing the
cable correction and the OPEN/SHORT correction. When the cable length is 0 m, Ac is 0
percent.
fm
Ac = ——— + Aco [%]
15
Aco is the additional error when the impedance range is above 5 kΩ.
|Zm| . fm . Kt
Aco = ————————— [%]
1000
where:
fm = Test frequency in [MHz]
Zm = Absolute value of measured impedance in [kΩ]
Kl = Test cable length in [m]
Temperature factor
Multiply the sum of the basic accuracy and the cable length factor by the following
temperature induced error Kt, when the temperature range is 0 °C to 55 °C. The
boundary belongs to the smaller multiplier.
multiplier.
Figure 1-5. Temperature factor Kt
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