vi to continuosly output 0.5-12V DC

[easyrider]

Lynn, I didn't have to check for the handshake(maybe I dont understand what you mean). I connected the PIN 4 of the serial port to scope while PIN 5 was connected to the ground of oscilloscope.

And it worked i.e I got +12V when DTS is ON and -12V when it is OFF.

Thanks guys

Saurabh

[johnsold]

Saurabh,

My suggestion was to verify that DTS does not do something undesirable before the port is initialized or while it is being intialized. If the voltage changes polarity for a few microseconds during initialization, your device might activate prematurely.

Lynn