The L6 Link between my Powercab 212 and Helix is only partially working. I can send audio signal from the Helix and I can change speaker models from the Helix, but I can't control the Digital Out Level from the Helix to the Powercab. The Firmware Version in my Helix is 3.11.0 and the Powercab is V 2.00.1 (both are the latest available as of this morning) and I am using the correct 110 ohm cable to make the L6 Link connection.
According to the Helix manual (3.10 Revision F), when a Helix and Powercab are interconnected via L6 Link, the Helix is supposed to automatically disable S/PDIF and switch to AES/EBU. Then, you should be able to use the Digital Out Level to control the level of audio being sent to the Powercab. But instead, when I connect the Powercab to the Helix using L6 Link, the Helix does not automatically switch to AES/EBU. Moreover, it makes no difference whether I set the Digital Output to S/PDIF or AES/EBU; either way, I can adjust the Digital Out Level full scale from -60 dB to +18 dB and it makes no difference in the output level sent to the Powercab.
Now, I know that I can change the output level in the Output block of the Helix but that also affects the output levels to the XLR and 1/4" connectors and I don't want those to be affected. I want to be able to adjust the Digital Out Level to the Powercab independently of the XLR and 1/4" outputs for several reasons. I want to thank everyone in advance for their replies.