Grass Valley Trinix NXT v.3.3.1 - Manual (Page 218)

218 Trinix NXT — Installation and Service Manual
Section 3 — Hardware Installation
Note Newer-model Trinix units have “1-based” input/output connector numbering;
i.e., there is no connector “0.” However, Jupiter tables are always 0-based.
When controlling such units, references to Physical Input/Output connectors
in Jupiter tables refer to that connector number plus 1. For example, Physical
Input 10 in the Jupiter Switcher Input table would correspond to connector
number 11 on the Trinix rear panel.