Table of Contents
Advertisement
Maintaining the Calibrator
6
Performance Tests
Testing Ohms Input
Before measuring ohms input, you need to "characterize" the ohms output of a
5520A. To achieve the needed accuracy, the 8508A will be used as a transfer
standard and the 742A will be used as the reference standard. To find the true
value of the 5520A output, use the ratio input function of the 8508A located on the
front and rear panels. Connect the 742A to the front terminal and connect the
5520A to the rear terminals, both using four-wire measure. See Figure 6-7 for a
connection diagram.
8508A
Front
Rear
5520A
742A
fcn28f.eps
Figure 6-7. 8508A/01 Connection Diagram
6-11
Advertisement
Table of Contents
