How do I perform external analog programming or ac modulation?
The external control function allows the load’s main level voltage, current, power and resistance max range setting to be scaled from 0 to 10 Volts. Once the external control is enabled, the voltage (0~10V) inputted through the EXT_PRG and EXT_GND port will adjust the current, voltage, resistance or power level accordingly. The eLoad offers external programming support for ac voltage range of -1V ~ 10V and frequency range of dc ~ 10 kHz.