User manual

Series 3700 System Switch/Multimeter Reference Manual Section 14: Verification
3700S-901-01 Rev. C / July 2008 14-13
Connect HP3458A in series with 5700 calibrator
Description
Range (A)
Test
point(A)
Lower limit (A)
Upper limit (A)
Verify 100µA Zero
1.00E-04
0.00E+00
-3.000000E-09
3.000000E-09
Verify DC Curr 100µA
1.00E-04
1.00E-04
9.994910E-05
1.000509E-04
Verify DC Curr 100µA
1.00E-04
-1.00E-04
-1.000509E-04
-9.994910E-05
Verifying DC current 1mA to 3A ranges
Check DC current accuracy by applying accurate current from the DC current
calibrator to the Series 3700 analog backplane connector and verifying that the
displayed readings fall within specified limits.
NOTE The Fluke 5725A amplifier is only needed when verifying the 3A
range.
To verify DC current accuracy:
1. Connect the Series 3700 AMPS and LO INPUT pins to the DC current
calibrator as shown in the "DC current verification 1mA to 3A ranges
diagram" below, using the Keithley Instruments Model 3706-751 fixture
cable.
2. Select the DC current function.
3. Set the Series 3700 to the applicable ranges. Make sure that REL is
disabled.
4. Source DC current for each of the test points summarized in the DC current
verification data table. For each setting, be sure that the reading is within
stated limits.
Figure 14-4: DC current verification 1mA to 3A ranges