user4519: I'm installing a Hitachi MS-1 switcher, and it's HDMI output works fine with an HDMI v1.3 cable, but not with a cable v1.4.  I've tested the v1.4 cable on a different output device (DVD player) and it works fine.  I've also tried two different display devices (monitor and projector).
My question is:  Is HDMI v1.4 supposed to be fully backwards compatible, or are there some caveats?
Also, has anyone else encountered any equipment that worked with HDMI v1.3 but not v1.4?

user2836: A 1.4 cable should work fine with a 1.3 signal, however an HDMI 1.4 signal will not work with an HDMI 1.3 cable or an HDMI 1.3 output unless the source is capable of using a prior standard.

4519: <p>I'm installing a Hitachi MS-1 switcher, and it's HDMI output works fine with an HDMI v1.3 cable, but not with a cable v1.4.  I've tested the v1.4 cable on a different output device (DVD player) and it works fine.  I've also tried two different display devices (monitor and projector).</p>

<p>My question is:  Is HDMI v1.4 supposed to be fully backwards compatible, or are there some caveats?</p>

<p>Also, has anyone else encountered any equipment that worked with HDMI v1.3 but not v1.4?</p>
 2836: <p>A 1.4 cable should work fine with a 1.3 signal, however an HDMI 1.4 signal will not work with an HDMI 1.3 cable or an HDMI 1.3 output unless the source is capable of using a prior standard.</p>
