Today I was calibrating some levels on some of my outboard gear especially my 1176s and testing some different outboard gear and some plugins. My 1176 seemed to be needing to see a lot more input gain the plugins. Just to test some things out I ran a signal generator in one channel, Channel 10, at unity 0 db, and then I took the insert send an put it into a line input of another channel, Channel 9, to check the level of the send. The input level of the send from channel 10 going into the line input of Channel 9 was showing right -3 db not the O VU that I expected to see. I checked this around the desk and this is seems to be the way the desk is. Is this the way the SSL G are designed. Is the send -3db from the actual channel input? My manual states that the insert send is 0db relative to the nominal operating level of +4dB so I was expecting to see the send hitting my desk back at 0db if I sent a signal that was coming at 0 db. Am I missing something simple?