6253 DC Voltage Current Source/Monitor Operation Manual
7. CALIBRATION
7-1
7. CALIBRATION
This chapter describes how to calibrate the 6253 to perform within the specified accuracy ranges.
In order to use the 6253 in the specified accuracies, periodic calibration at least once a year is recommended.
Contact an ADC CORPORATION sales representative for the calibration service.
7.1 Measuring Instrument Necessary for Calibration
The following table shows the required accuracies of a measuring instrument used for calibration.
Range
ZERO FS
Standard
resistor
Recommended
DMM
Cable
Calibration
point
Required
accuracy
Calibration
point
Required
accuracy
300 mV 0 V 500 nV 300 mV 10 ppm 7481
or
6581
*1
A01044
(supplied
accessory)
*2
3 V 2 V 3 V 10 ppm
10 V 10 V 10 V 10 ppm
30 V 20 V 30 V 10 ppm
100 V 100 V 100 V 10 ppm
3 A 0 A 10 pA 3 A 120 ppm
30 A 20 pA 30 A 120 ppm
300 A200 pA300 A 120 ppm
3 mA 2 nA 3 mA 120 ppm
30 mA 20 nA 30 mA 120 ppm
300 mA 200 nA 300 mA 120 ppm
2 A 0 V
(0 A)
*3
2 V 200 mV
(2 A)
*3
10 ppm 100 mΩ
Required
accuracy:
200 ppm
A01044
(supplied
accessory)
*2
*1: Use the 7481 or 6581 under the following conditions.
Integration time: 10 PLC. Auto Zero: ON. Within 24 hours following INT CAL.
*2: When much externally induced noise exists, use shielded cables such as A01001.
*3: The 2A range calibration performs voltage conversion by using the standard resistor.
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