Discrete IR codes are IR codes that are not always available via the remote control also hidden IR codes, in other words.
Controlling IR devices can sometimes be difficult due to the lack of discrete IR functions on the device remote control, such as:
Direct source selection
One IR code for ON and one for OFF
One IR code for MUTE ON and one for MUTE OFF
Not having a direct IR code for HDMI input, for example, may result in the need to build a macro that first changes the device to a known state and then repeats the source selection code to sequence through to the HDMI input. This solution works but can take a lot of time to execute. This is where discrete IR codes come in handy.
To find the hidden codes, you can contact the device manufacturer. Alternatively, we recommend you can search for the codes on the Internet. There are a number of sites where large numbers of discrete IR codes are available.
Please look at:
http://irdb.globalcache.com/ (login required, free)
Once you find the code you need, copy and paste it into the Biamp Device Editor program and test it. A discrete IR code can cover multiple devices from the same manufacturer, so if you do not find the specific model you need, try another from the same manufacturer.