Wiring SH GX2150 to OpenCPN

[infinitysail]

I know this has been discussed on here several times, but I am still struggling.

I am trying to get any NMEA output from my GX2150 on OpenCPN. I have a serial cable hooked up to my computer with an ATEN serial to USB connector. When I hook my raystar 125 to it at 4800, I see sentences.

Now I am trying to connect the GX2150, but no sentences. I have tried hooking the serial cable to the yellow/white wires for AIS out at 38400, but see nothing. I have tried hooking up to the gray and brown wires at 4800 and no DSC sentences.

Will the radio output sentences even if there are no AIS targets? Currently, I have none in range.

I also noticed that my chart plotter, which was working with the unit two weeks ago, is also not receiving sentences. Again, does the radio send sentences if there are no targets in range? If not, then that is likely to be my problem. otherwise, I think my radio went bad. Not good one week before a planned 1000 mile sail....

Edit:
I have tried:
Yellow to pin 2 and white to pin 5
Yellow to pin 2 and boat ground to pin 5
Gray to pin 2 and brown to pin 5
Gray to pin 2 and boat ground to pin 5

The gps input onto the green and blue wires works. I will get someone to DSC me tomorrow.

[infinitysail]

I figured out my problem. If there are no AIS targets, there are no sentences. I left it on for longer and picked up a few sentences. For me, I wired the yellow wire to pin 2 and the white to pin 9 and set the baud rate to 38400.

One other note: the radio does not put out any sentences when in demo mode. I figured it would, but I was wrong.