6241A/6242 DC Voltage Current Source/Monitor Operation Manual
5.2.8 Source Timing and Measurement Timing
5-46
3. For the Current-source
Settling time (Ts) of the 6241A/6242 is defined by the changes in current-source value (Is), the cur-
rent sense resistance (Rs), the load voltage (VRL=Is × RL), and the settling time setting (Fast/Slow),
as shown below.
Set the measurement delay (Td) to Ts or over.
Unit [μs]
NOTE: 500 mA range is available for 6241A only. 3 A, 5 A ranges are available for 6242 only.
(Example) 3 mA range, slow mode, 1 mA current with 1 kΩ resistance
Is=1 mA
VRL=1 mA × 1 kΩ=1 V
Ts=(60 × VRL)/(Is × Rs)+150
Ts=(60 × 1 V)/(1 mA × 220 Ω)+150=422.7
Therefore,
Set as Td > 423 μs.
Range Fast Slow
30 μATs=(60 × VRL)/(Is × Rs)+200 Ts=(100 × VRL)/(Is × Rs)+300
300 μA to 300 mA Ts=(16 × VRL)/(Is × Rs)+50 Ts=(60 × VRL)/(Is × Rs)+150
500 mA Ts=(30 × VRL)/(Is × Rs)+80 Ts=(100 × VRL)/(Is × Rs)+200
3 A, 5 A Ts=(10 × VRL)/(Is × Rs)+100 Ts=(20 × VRL)/(Is × Rs)+400
Rs value
Range Rs [Ω]
30 μA22 k
300 μA 2.2 k
3 mA 220
30 mA 22
300 mA 2.2
500 mA 2.2
3 A 22 m
5 A 22 m
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