How to check 5c flag if you have a Motorola 640x
To check for 5C protection on channels that you are interested in capturing from (or have recorded from), do the following:

1. Start with DCT64xx turned on and connect the firewire cable between the DCT64xx and your PC.
2. Tune to a channel you are interested in recording from.
3. Enter DIAGNOSTICS page on the DCT64xx as follows with remote: Press Cable, Power off, Select, Select.
4. Scroll down to: d11 INTERFACE STATUS and then click right arrow to enter that module.
5. In 1394 I/O DEVICE section you should see ACTIVE PORTS=1 (indicating the Firewire connection is active) and look at 5C IMPLEMENTATION value. If it is something other than 0 this means 5C protection is enabled and you won't be able to capture that channel.
6. To get out of the Status Page click left arrow with remote and scroll down to EXIT and click Select.

How to check 5c flag if you have a SA DVR with Passport

1. Go to your diagnostic channel, mine in 996
2. Press "Exit" on the STB, a new screen opens
3. Scroll down to 1394, it will display info for the last channel you tuned to.

How to check 5c flag if you have a SA DVR with SARA

1. Go to the diagnostics menu for the STB.
2. For the SA, on the box itself (not using the remote), press and hold the "+" button for a few seconds, the "envelope" light will come on blinking (the + button is the "bulls-eye" in the middle of the 4 "arrow" keys).
3. Press the "info" key next.
4. 19 pages of data is available. Use the left / right navigation keys to move thru pages.
5. Firebus port status is last or second to last page as I recall.
6. SA will show CCI/EMI state rather than use the "5c" nomenclature but same, same.
7. This is shown channel by channel so you must change channels to check state of the channel of interest.
8. Quit by pressing the "exit" key on the front panel.