@andtfoot Thank you for your initial work with the schematic.
I've been needing to repair my ID3 and ID4 WireView Cable ID units (Broken tabs).
So as I had to de-pot them I have some more info, and I've also measured the loopback inside my LinkRunner AT-2000.
Resistors R2, R3, R5-10, R13, R14 are the same values for each ID and the internal loopback
The internal loopback only has a single 14K3 (R4) between pin 4 and 5, Where as the Cable ID units have 4 resistors (R6-9) in the parallel-series arrangement.
Its also missing the pin-9 shield test components (R1, D5, C5).
So the only components that set the ID are R4, R11, R12 and R15
| ID0 | ID1 | ID3 | ID4 |
| R4 | 4.32K | 8.66K | 21.5K | 34.8K |
| R11 | 1.69K | 3.4K | 8.45K | 13.7K |
| R12 | 1.91K | 3.83K | 9.53K | 15.4K |
| R15 | 2.15K | 4.32K | 10.7K | 17.4K |
Has anyone else have values for R4, R11, R12 and R15 from other IDs?
https://docs.google.com/spreadsheets/d/16VslfwP_YgZnVYq4AyuuF9MA8dwQInBXGkP8JXn2l00/edit?usp=sharing