24 | Keysight | E4980A Precision LCR Meter 20 Hz to 2 MHz, E4980AL Precision LCR Meter 20 Hz to 300 kHz/500 kHz/1 MHz – Data Sheet
DCR measurement specification
DC resistance (Rdc) measurement function is available when either E4980A-001/200 or
E4980AL-032/052/102 is installed.
DC resistance (Rdc) accuracy
Absolute measurement accuracy Aa
Absolute measurement accuracy Aa is given as
Equation 15.
Aa = Ae + Acal
Aa
Ae
Acal
Absolute accuracy (% of reading value)
Relative accuracy (% of reading value)
Calibration accuracy
Relative measurement accuracy Ae
Relative measurement accuracy Ae is given as
Equation 16.
Ae = [Ab + (Rs /|Rm|+ Go × |Rm|) × 100 ] × Kt
Rm
Ab
Rs
Go
Kt
Measurement value
Basic accuracy
Short offset [Ω]
Open offset [S]
Temperature coefficient
Calibration accuracy Acal
Calibration accuracy Acal is 0.03%.
Basic accuracy Ab
Table 43. Basic accuracy Ab is given below.
Measurement time mode
Test signal voltage
≤ 2 Vrms
1.00%
> 2 Vrms
2.00%
SHORT
MED
0.30%
0.60%
Open offset Go
Table 44. Open offset Go is given below.
Measurement time mode
Test signal voltage
≤ 2 Vrms
50 nS
> 2 Vrms
500 nS
100 nS
SHORT
MED
10 nS
Short offset Rs
Table 45. Short offset Rs is given below.
Measurement time mode
Test signal voltage
≤ 2 Vrms
25 mΩ
5 mΩ
> 2 Vrms
250 mΩ
50 mΩ
SHORT
MED
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