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5700A/5720A Series II Calibrator
Service Manual
3-26
INPUT SENSE
HI
LO
HI
LO
DMM
OUTPUT SENSE
HI
LO
HI
LO
CALIBRATOR
(UUT)
CURRENT SENSE
HI
LO
HI
LO
OUTPUT
HI
LO
CURRENT SOURCE
742A-X
F3-5.EPS
Figure 3-8. 1 Ohm and 10 Ohm Resistor Verification
Note
There is no need to do the cal current calculation of step 6 if the current
source has a settability of ±3 ppm.
12. Repeat steps 3 through 11 for the 1.9Ω and 10Ω resistance values using the 1.9Ω and
10Ω resistance standards. At the 10 ohm check, use 10 mA of current and a
multiplier for step 3 of 0.01.
13. The low-value (1Ω, 1.9Ω, and 10Ω) tests are summarized in Table 3-4.