You bring up very interesting and valid points. I am confident the project was shot in HDV and that I am editing in HDV. But I don't want to discount the possibility that I'm overlooking something very simple(so don't be afraid of being condescending).
Under "Easy Setup", I'm at HDV-1080i60.
In "Audio Video Settings", my Sequence Preset is HDV-1080i60
My Device Control Preset is HDV
My Devices Control Preset is HDV Firewire Basic
Under Video Playback, all the HDV settings are grayed out.
The Sony Deck little monitor displays HDV tapes
Even if I create a new project with these settings, and put HDV 1080i60 color bars onto my timeline, the deck does not see it. If I switch the deck to DV (and select all frames under View: Playback), the monitor sees the color bars, cropped, so the deck is automatically down converting to SD.
One other note. The deck has indicator lights under iLink forHDV, DVCam, and DV. When I am hooked up to the deck from the computer, and am in HDV on the deck, the indicator light for HDV does not light. If, however, I unplug the firewire from the computer, the HDV indicator lights up.
I also tried outputting to the Canon HDV camera, but could not see the HDV timeline in Final Cut. When going firewire out of the camcorder into the Sony deck, I was able to see the HDV image on the small Sony monitor (in HDV setting on deck input)