6253 DC Voltage Current Source/Monitor Operation Manual
4.2.8 Source and Measurement Timing
4-54
When the Memory Store mode is set to OFF or Normal, executing the NULL, scaling, Max/Min or
comparator calculation will add the following processing time respectively.
NULL calculation ON: Approx. 0.2 ms
Scaling calculation ON: Approx. 1 ms
Max/Min Calculation ON: Approx. 1 ms
Comparator calculation ON: Approx. 15 ms
Resistance Measurement: Approx. 1 ms
(Example) DC source mode, integration time: 1 PLC (50 Hz), Memory Store: Normal, NULL
calculation: ON, Scaling calculation: ON, Max/Min calculation: ON, Comparator
calculation: ON. The measurement time is obtained as follows:
Tit = 20 ms
Tk = 0.04 ms
Tsys = 2 + 0.2 + 1 + 1 + 15 = 19.2 ms
Tm = Tit + Tk + Tsys = 39.24 ms
4.2.8.5 Auto Range Delay
The Auto Range Delay function is used when a capacitive load (C
L
) is measured by voltage source current
measurement (VSIM).
When voltage is applied to C
L
and current is measured in Auto Range, after C
L
is charged the current value
drops and the measurement range decreases. This function delays the measurement compensating for the
temporal response in the current value that occurs when the measurement range is switched.
Vs
Io
3.2 A
Time
Time
Tar: Auto Range Delay
30 A range measurement
3 range measurement
Range switching
Tar
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