100Μa And 10Μa Range Verification - Keithley 224 Instruction Manual

3.5.2 100µA and 10µA Range Verification
1. Replace the 100 Ω resistor in Figure 3-1 with the 100k Ω
resistor specified in Table 3-1.
2. Select the 20VDC range on the Model 192.
A. Program the Model 224 to output +00.00-6A. Verify
that the reading on the Model 192 does not exceed
+10mV.
B. Program the Model 224 to output +0.000-6A. Verify
that the reading on the Model 192 does not exceed
+1mV.
3. Program the Model 224 to output +100.00-6A with a 20V
compliance limit.
3-2
HI
LO
DCV ACV
HI
TE
!
LO
TO
1.4kV MAX
Ω Ω SENSE
HI
RECALL
PMT
LO
MODEL 192
FRONT PANEL
Figure 3-1. 100mA to 1mA Range Verification
4. Verify the reading on the Model 192 to be between 10.016
and 9.984V.
5. Program the Model 224 to standby (press OPERATE).
6. Select the 2VDC range on the Model 192.
7. Program the Model 224 to output +10.00-6A with a 20V
compliance limit.
8. Verify the reading on the Model 192 to be between
+1.0016 to 0.9984V.
9. Repeat steps 2 through 8 with negative output current.
The verification of the Model 224's accuracy is now complete.
100Ω
MODEL 220
REAR PANEL