What are the LEDs for on the back of the HD-2000?
The Green LED indicates signal lock and the Red indicates ATSC errors. At power on the Red will blink on then the Green will come on and remain on. When the driver loads the Red will flicker once then later come on and the Green will flicker. In NTSC mode only the Green will be on. In ATSC mode with no station or signal the Red will be on and the Green will flicker. With a weak station or signal the Red will flicker and the Green will be on. With a strong station or signal the Red will be off and the Green on.