^Oh cool, another Californian on this forum :big grin:
Something I never really understood... since I've never seen these newer units in use (IS2Jr or IS2XD)... how can you tell the difference between an IS2XD and the IS2Jr/IS2HD?
The I2Jr is fully SD and is easy to tell from the 2 others (example: https://www.youtube.com/watch?v=5T1UbPx_P8M).
The I2XD (example: https://www.youtube.com/watch?v=_zO5mRepmZc) and HD are somewhat difficult to tell apart since they're both HD. My best advice is to remember what channel the IS1 SD feed was on, and then check the actual HD feed (Xfinity around my area has this in the higher channels, with no local forecast). If the former SD channel is now in HD, check the HD channel- it should either be the national version or the I2HD. If national on the HD channel is the case, then it's likely to be the I2XD on the SD channel. Of course, it's hard to tell when both the SD and HD channels have a local forecast. In this situation, either there's a I2HD that is being put onto both the HD and SD feeds, or separate I2XD and I2HDs. To add on to this answer, I'd try seeing if the welcome message or backgrounds are any different on the two channels (which would prove that there are two different Stars in use).
Thanks. I've checked some resources that I have and I was able to conclude that the XD is the newest HD IntelliStar available, however as opposed to a BNC output from the IRD to the IntelliStar, it's using a digital transport stream from the IRD to the STAR, then another digital transport stream from the STAR to the cable operators modulator equipment. It's basically the same as the IS2Jr, but in HD and without the BNC connections.
From what I can tell, you appear to be correct when you say it's hard to tell the difference. I thought I heard that the XD outputs in both SD and HD, but it's letterboxed? To me that'd sound like the cable plant is splitting the output signal and down converting one to SD and keeping the other HD, then modulating those signals to the correct channel. This could also be achieved with the IS2HD. Now, if the XD didn't letterbox and had two output streams, that'd be impressive to me.