User`s guide

Chapter 3 Calibration Procedures

Measurement Techniques

Setup for Most Tests

Most tests are performed at the front terminals as shown in the following figure.

Measure the dc voltage directly at the (+) and (-) terminals on the front panel.

Figure 3-1. Performance Verification Test Setup

Electronic Load

Many of the test procedures require the use of a variable load resistor capable of

dissipating the required power. Using a variable load resistor requires that switches

should be used to connect, disconnect, and short the load resistor. An electronic load,

if available, can be used in place of a variable load resistor and switches. The electronic

load is considerably easier to use than load resistors. It eliminates the need for

connecting resistors or rheostats in parallel to handle power, it is much more stable

than carbon-pile load, and it makes easy work of switching between load conditions

as is required for the load regulation and load response tests. Substitution of the

electronic load requires minor changes to the test procedures in this chapter.