6241A/6242 DC Voltage Current Source/Monitor Operation Manual
5.2.5 Measurement Function
5-30
•6242
2. Measurement Auto Range for the DC Source Mode
This section describes how DC-source-mode-measurement-range and the limiter-range operate using
the following diagram examples.
The current-limiter setting is 200 mA. After measuring 1 mA, the example below measures 100 mA.
While the measurement auto range is enabled, it measures by changing the limiter value to be larger
than the full scale of the measurement range.
• For *1, the measurement result with 300 mA range is 1 mA, and the auto range changes the
range. As a result of the range change to 30 mA, the auto range changes the limiter to the maxi-
mum value for the 30 mA range (32.19 mA).
• For *2, the measurement result with the 30 mA range is 1 mA, the auto range changes the range
and then the limiter changes to 3.219 mA.
• For *3, measuring with the 3 mA range outputs 1 mA measurement data.
• The output current changes to 100 mA at Point y, but the limiter is 3.219 mA and the output cur-
rent is limited to 3.219 mA.
Measurement function Range
Auto range level
DOWN UP
Voltage-measurement 300 mV - 321.000
3 V 0.29999 3.21000
6 V 02.9999 -
Current-measurement 30 μA-32.1000
300 μA 029.999 321.000
3 mA 0.29999 3.21000
30 mA 02.9999 32.1000
300 mA 029.999 321.000
3 A 0.29999 3.01000
5 A 2.89999 -
Output current (changes according to load)
100 mA
32.19 mA
3.219 mA
1 mA
Start measurement
x
Measurement
*1
Range
change
*2 *3 *4
y
*5 *6 *7
Time
Range
change
Range
change
Range
change
Limiter:
200 mA
32.19 mA
3.219 mA
Output data
*3 *4
Time
*7