How to model multiple channel distribution amplifier

[joecox1603]

I’m trying to model a multi‑channel distribution amplifier that receives several coaxial inputs and replicates each input signal across multiple outputs. The device behaves like this:

IN_1 → OUT_1_1, OUT_1_2, OUT_1_3, OUT_1_4, OUT_1_5
IN_2 → OUT_2_1, OUT_2_2, OUT_2_3, OUT_2_4, OUT_2_5
IN_3 → OUT_3_1, OUT_3_2, OUT_3_3, OUT_3_4, OUT_3_5

Each input is independently split to its corresponding set of outputs.
To represent this, I created rear ports with 5 positions, each mapped to 5 front ports. Functionally this matches how the hardware works, and I can sometimes get cable‑path tracing to work.
However, I’m running into some issues:

• If the cable chain doesn’t terminate at interfaces at both ends, NetBox sometimes can't trace the path at all.
• When trascing a cable in the middle of the chain, NetBox sometimes chooses an endpoint to trace toward, even though the - rear‑port fanout represents a one‑to‑many split, where tracing should normally stop due to a path split.

Before I assume this is simply a limitation of how NetBox handles one‑to‑many rear‑port mappings (and not really having directionality to cables), I wanted to ask:
Is there a better or recommended way to model this type of multi‑channel distribution amplifier?
Or is this style of one‑to‑many signal fanout inherently outside the scope of NetBox’s cable‑tracing model?
Any guidance would be appreciated.

Front Ports:

Rear Ports:

[edaleand]

Which profile did you use on the cable to IN_1? I tried briefly using the 1C6P profile and it seems to work.