Operating instructions

Introduction To Programming
25
Figure 3-6. Batteries in Series
In this example, the Electronic Load is used to burn-in a power supply at its rated output current. Because the Electronic
Load is operating in CC mode, if the power supply’s output current drops below the rated output current during the test, the
UNR (unregulated) condition will be set on the Electronic Load. This can be used to indicate that a failure has occurred on
the power supply. If the unregulated condition persists for a specified time, the inputs of the Electronic Load are turned off.
The purpose of this example is not to illustrate power supply testing, but to explain how to program and use the status
registers on the Electronic Load. The part of the program that runs the test simply monitors the supply at the rated output
current for one hour and stops the test. You can replace this portion of the program with your own routine to test the power
supply. Although SRQ (service request) is enabled to interrupt only on the UNR bit in this example, you can modify the
program to interrupt on other conditions.
Figure 3-7. Typical Burn-In Test