Keithley SourceMeter 2425, Service Manual, Page: 51 / 141

Table 2-4
Front panel current calibration
Source range 1 Source current
Multimeter
current reading 2
10
μ
A +10.000
μ
A
+00.000
μ
A
-10.000
μ
A
+00.000
μ
A
___________
μ
A
___________
μ
A
___________
μ
A
___________
μ
A
100
μ
A +100.00
μ
A
+000.00
μ
A
-100.00
μ
A
+000.00
μ
A
___________
μ
A
___________
μ
A
___________
μ
A
___________
μ
A
1mA +1.0000mA
+0.0000mA
-1.0000mA
+0.0000mA ___________ mA
___________ mA
___________ mA
___________ mA
10mA +10.000mA
+00.000mA
-10.000mA
+00.000mA ___________ mA
___________ mA
___________ mA
___________ mA
100mA +100.00mA
+000.00mA
-100.00mA
+000.00mA ___________ mA
___________ mA
___________ mA
___________ mA
1A +1.0000A
+0.0000A
-1.0000A
+0.0000A ___________ A
___________ A
___________ A
___________ A
3A 3 +3.0000A
+0.0000A
-3.0000A
+0.0000A ___________ A
___________ A
___________ A
___________ A
1
Use EDIT and RANGE keys to select source range.
2
Multimeter reading used in corresponding calibration step. See procedure.
3
Current calculated as follows: I=V/R, where V is the DMM reading, and R is the
characterized value of the 1
Ω
resistor.
2-16 Calibration Model 2425 Service Manual