8250A Optical Power Meter Operation Manual
7. CALIBRATION
7-1
7.
CALIBRATION
This chapter describes how to calibrate the 8250A optical power meter for use within the specified accuracy.
For more information on calibrating the sensors, contact ADC CORPORATION. To use this instrument
within the specified accuracy, this instrument should be calibrated once a year. If asking ADC CORPORA-
TION to calibrate the 8250A, contact ADC CORPORATION or a sales representative. A contact address and
telephone number is provided at the end of this manual.
7.1
Instrument, Cable, and Others Required for Calibration
The following tables show the accuracy of an instrument, cables, and the recommended instrument required
for the calibration in each range.
Table 7-1 Cable, Adapter, and Others Required for Calibration
Cable and others
Remarks
TRIAX-12pin conversion adapter A
For the 823* series sensor path
TRIAX-12pin conversion adapter B
For the 821* series sensor path
A01009
TRIAX-TRIAX cable
A01010
TRIAX-alligator cable
Resistor (1 k
5% or less, 1/4 W or greater)
Table 7-2 Current Measurement Calibration
Range
[ZERO]
[FS]
Recommended
instrument
Calibration point
Calibration
point
Required
accuracy [A]
20 nA
0 A (Input open)
19 nA
106 pA
6245
(Used only at FS)
200 nA
190 nA
436 pA
2
A
1.9
A
1.42 nA
20
A
19
A
12.3 nA
200
A
190
A
104 nA
2 mA
1.9 mA
1.04
A
20 mA
19 mA
10.4
A
50 mA
50 mA
18.1
A
