4601 I-V Meter Operation Manual
8. CALIBRATION
8-1
8.
CALIBRATION
This chapter describes how to calibrate the 4601 to perform within the specified accuracy ranges.
In order to use the 4601 in the specified accuracies, periodic calibration at least once a year is recommended.
Contact an ADC CORPORATION sales representative for the calibration service.
NOTE:
The 4601 is calibrated only by remote operation through the GPIB or USB interface, but not by manual
operation.
8.1
Preparation for Calibration
8.1.1
Measuring Instruments Necessary for Calibration
The following table shows the measuring instruments necessary for calibration in each range.
*1:
When the 6581 is used, the following conditions should be met:
Integration time: 20 PLC, Auto ZERO: ON, within 24 hours after INT CAL
*2:
When much externally induced noise exists, use shielded cables, such as A01035, A01047, etc.
8.1.2
Precautions
1. Use an AC power supply with the specified voltage.
2. Execute calibration under the following conditions in a location free of dust, vibration, noise or other
adverse conditions:
Temperature: 23
C
3
C Relative humidity: 60% or lower
3. Allow the 4601 to warm-up for one hour or longer before calibration.
Allow the measuring instrument to be used in calibration to warm-up for the period of time specified
before the calibration.
The warm-up time for the 6581 is four hours or longer.
4. After calibration, note the dates of the calibration and the next scheduled calibration on a card or
sticker, etc. for convenience.
Table 8-1 Measuring Instruments Necessary for Calibration
Standard
Applicable range
Required accuracy
Recommended instrument *1
Digital voltmeter
1
V to 1000 V
20 ppm
6581*2
Current source
0 mA to 300 mA
120 ppm
*2
3 A
0 ppm
10 A
400 ppm
Resistance
1 k
30 ppm
0
C standard calibration bath
Type T thermocouple class 1
0
C
0.1
C
COPER ELECTRONICS
ZC-114
ADC 1101-100
