output digital pulse

[bilog1198]

Hello,

I am very new to Labview. I am trying to output a digital signal to scanning polygon mirror with a certain frequency. Someone suggested that I used the Example "Gen Digital Pulse Train" but add to the program in order to output digitally to the device. I have been looking at examples and have been putting stuff together but am unsure if I am on the right track.

I have attached my written program. Could someone please let me know if I am doing this correctly or if there is an easier way to do this? Even an example that I could look at would be really helpful.

Thanks,

Maria

[AnalogKid2DigitalMan]

bilog1198:

I can't look at your code, but what DAQ hardware do you have, well need to know in order to assist.

Also- who manufactured the scanning polygon mirror? Just curious because I used to work at a company that manufactures them (not too many manufacturers of them in the world).

-AK2DM

[bilog1198]

Thank you for you quick reply, AK2DM. We are using a NI PCI- 6251. The polygon scanning mirror is from Lincoln Laser.

This task is probably easy but none of us in the lab are familiar with LabView.

I've attached our code in JPEG format. Hopefully you will be able to see it this time.

Thanks,

bilog1198

[AnalogKid2DigitalMan]

bilog1198:

Generate digital pulse train example should get you the pulses needed to control the polygon. They should appear on one of the counter output pins. Looks like you added code to set a pattern on a digital port- are you going to use that to enable the motor?

I was correct on my hunch! I worked at Lincoln is the 90's, I designed and built the test stations for the driver cards and a larger rack and stack system based on LabWindows CVi to test the electrical, mechanical, and optical aspects of the completed MPA (Motor Polygon Assembly). Also did a host of other test sytems and automation there. Ahh, a trip down memory lane.

Again, out of curiosty, what is the model of the MPA? Are you using an MC3.6 driver card?

Good Luck and thanks for the memories (some not so good, too 🙂 )

-AK2DM

[bilog1198]

Hello,

I am not sure what model MPA we are using. I am actually helping a grad student with her research so she is the one with all the spec's.

Thanks so much for your help. You've cleared up a lot of things!

Maria