The signal connector, located on the top of the unit, is shown on this slide. For parallel operation, remove the link between pins 1 and 2; this enables the droop mode current share feature. The power supply can be remotely turned on and off by removing the link between pin 5 and pin 6 of the signal connector and taking the CNT+ (pin 5) to TTL low, or by switching pin 5 to pin 6 with a remote switch or relay. If the link is removed and no TTL signal is applied, the unit remains off. The output voltage may be adjusted between 24 ~ 28V by the application of an external programming voltage in the range of 5 ~ 6V to pins 7 and 8 of the signal connector.