Interesting results here. I connected the CM-7000 with IR blaster code on my Showstopper 2000 to 0144 and customized it to use minimum 3 digits with DirectTV San Francisco as my "provider" on Line 1. (Customization is achieved by pressing the Zones button while the given code is highlighted.)
As noted elsewhere, this pushed all the ANT/CATV channels into the 10xx range without affecting the ability of the Showstopper to tune them normally. I.e., those are "virtual" channel numbers.
The Showstopper definitely can control the CM-7000 now, though the interaction between the units is short of ideal. Basically, if I tune to channel 5 on the Showstopper, it sends an IR code for 005 to the CM-7000, which is interpreted as 00-5 (useless). If I really want channel 5-1 OTA then I need to tune the Showstopper to 51, which causes it to send 051.
So as things stand, recording via the Program Guide will not work with the CM-7000. Manual recordings will be fine.
I would have thought that setting the IR blaster to send Enter after the channel number would speed channel switching, but it doesn't seem to help. I may play around with this some more.
Another issue is that the Showstopper's channel list "reinterprets" some channel selections. For example if I enter 111 because I want 11-1, the Showstopper sends 101 over the IR blaster because 111 and 101 are "associated" channels. This is hard to describe...basically they have the same programming but one is the HD version...or something like that. (You may have seen something similar with the appearance of LOOR (local origination) channels in the Program Guide, that duplicate existing channels.) Since the Program Guide really isn't doing anything for me anyway, I should probably try a different "dummy" service provider. Maybe there's another solution.
Another problem I anticipate with having the inclusion of a bunch of channels that I don't really get is that the Showstopper will attempt to record shows that appear on those channels if I use Theme-based recordings. Basically I need to delete all
the "satellite" channels to prevent this.
It's interesting to compare interoperation with the DTX-9950. While we haven't found a way to get the Showstopper/ReplayTV IR blaster to tune subchannels with the Digital Stream, it will tune primary channels properly according to the Program Guide. So depending on how I want to use the Showstopper, there's a tradeoff.
OTOH an earlier post on this thread here
about the DTA800B has me thinking that I might be able to have it both ways by changing the minimum digits setting.