Programming Examples - 3Line 10: Selects channel 1 and turns the input off.Line 20: Selects the CC mode.Line 30: Sets the main current level to 25 A.Line 40: Sets the transient current level to 50 A and the slew rate to maximum.Line 50: Selects toggled transient operation.Line 60: Selects channel 2 and turns the input off.Line 70: Selects the CC mode.Line 80: Sets the main current level to 25 A.Line 90: Sets the transient current level to 50 A and the slew to maximum.Line 100: Selects toggled transient operation.Line 110: Enables transient operation and turns on the input on channels 1 and 2.Line 120: Sets the internal trigger oscillator frequency to 2 kHz (period of pulses = 0.0005).Line 130: Selects the electronic load's internal oscillator as the trigger source. The oscillator starts running assoon as this line is executed.Battery Testing ExampleThe principal measurement of a battery's performance is its rated capacity. The capacity of a fullycharged battery, at a fixed temperature, is defined as the product of the rated discharge current inamperes and the discharge time in hours, to a specified minimum termination voltage in volts (see figure3-5). A battery is considered completely discharged when it reaches the specified minimum voltage calledthe "end of discharge voltage" (EODV).Figure 3-5. Typical Discharge CurveIn this example, the electronic load discharges three nickel-cadmium batteries to determine theirdischarge rates at a fixed temperature (see Figure 3-6). The batteries are connected in series so thatwhen the EODV is reached, it is still above the minimum operating voltage of the electronic load. TheEODV for nickel-cadmium batteries is typically 1.0 volts.49
