Atec Agilent-E4980A-AL - Manual (Page 24)

24
DCR measurement specification
DC resistance (Rdc) measurement function is available when either option 001, 030, 050,
100, or 200 is installed.
DC resistance (Rdc) accuracy
Absolute measurement accuracy Aa
Absolute measurement accuracy Aa is given as
Equation 15. Aa = Ae + Acal
Aa Absolute accuracy (% of reading value)
Ae Relative accuracy (% of reading value)
Acal Calibration accuracy
Relative measurement accuracy Ae
Relative measurement accuracy Ae is given as
Equation 16. Ae = [Ab + (Rs /|Rm|+ Go × |Rm|) Ч 100 ] Ч Kt
Rm Measurement value
Ab Basic accuracy
Rs Short offset [Ω]
Go Open offset [S]
Kt Temperature coefficient
Calibration accuracy Acal
Calibration accuracy Acal is 0.03%.
Basic accuracy Ab
Table 43. Basic accuracy Ab is given below.
Measurement Test signal voltage
time mode ≤ 2 Vrms > 2 Vrms
SHORT 1.00% 2.00%
MED 0.30% 0.60%
Open offset Go
Table 44. Open offset Go is given below.
Measurement Test signal voltage
time mode ≤ 2 Vrms > 2 Vrms
SHORT 50 nS 500 nS
MED 10 nS 100 nS
Short offset Rs
Table 45. Short offset Rs is given below.
Measurement Test signal voltage
time mode ≤ 2 Vrms > 2 Vrms
SHORT 25 mΩ 250 mΩ
MED 5 mΩ 50 mΩ