6241A/6242 DC Voltage Current Source/Monitor Operation Manual
5.2.8 Source Timing and Measurement Timing
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5.2.8.3 Integration Time and Measurement Time
The measurement time (Tm) is calculated from the Integration time (Tit) and Internal processing time (Tk)
according to the following formula:
Tm = Tit + Tk
Integration time (Tit) can be selected between 100 μs to 200 ms.
Internal processing time (Tk) is shown below, in accordance with the source mode and the Memory store
mode.
Also, when the Memory store mode is OFF and Normal-ON, the following processing times are added by
NULL calculation, Scaling calculation, Max/Min calculation, and the Comparator calculation.
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
In measuring resistance: Approx. 1 ms
(Example) When in the DC source mode, and Integration time: 1 PLC (50 Hz),
Memory Store: Normal-ON, NULL calculation: ON, Scaling calculation: ON,
Max/Min calculation: ON, Comparator calculation: ON
measurement time is as follows:
Tit = 20 ms
Tk = 4 + 0.2 + 1 + 1 + 15 = 21.2 ms
Tm = Tit + Tk = 41.2 ms
5.2.8.4 Auto Range Delay
Used when measuring capacitive load (CL) by voltage source current measurement (VSIM).
When measuring current in Auto Range by applying a voltage to C
L, after CL is charged the current value
drops and the measurement range decreases. This delay is applied when measuring current value fluctua-
tions over time after the measurement range is switched.
Source mode Memory Store Tk [ms]
DC
Pulse
OFF Approx. 4
Normal-ON Approx. 4
Burst-ON Approx. 1
DC Sweep
Pulse Sweep
OFF Approx. 5
Normal-ON Approx. 5
Burst-ON Approx. 1
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