AP8959 PDU Terminator

[ausmrfusion]

Hi there,

I need to get a couple of terminators for an AP8959 PDU and followed @BillP's advice in handful of other posts to call local SE support and request 0W05545A or 0J-0W05545A.

They told me that they no longer carry spare parts (in Australia at least), and if a terminator failed while the PDU is covered under warranty they would send me an entirely new PDU with a terminator.  Unfortunately the PDU is no longer under warranty, so I am hoping there is an alternate channel to source them from.

Are there any recommendations of where I can get them from that isn't incredibly expensive (there are a couple on Ebay that are almost AU$100 shipped)?  If not, are there any published specifications detailing what resistors are required and what pins them need to be terminated to so I can make my own?

Thanks.

[MorneMeintjes]

Good Morning

Hope you are well.

The terminator has a 120ohm resistor between pin 1 and 2 of the RJ45 connector. If SE cant support , its best to make one up yourself.

Best Regards

You may have to measure the pins, and figure out where the resistor is located.

[ausmrfusion]

Hi @MorneMeintjes,

Thanks for the information and apologies for the late reply.

My AP8959 had a stuck blue display and was showing communication lost errors which I saw some people were able to resolve by adding a terminator.  I made one up myself following your advice re the pinout, but it didn't fix the problem.  I have since swapped the NMC and communication cable with another unit (which also included an original terminator), and while the new display works and I can see the status, I am still getting communication lost errors.

I think the PDU itself has failed unfortunately, but I measured the resistance across pins 1 and 2 of the terminator that came with the new NMC and can confirm you are 100% correct, there is 120 ohms across pins 1 and 2 of the RJ45 connector.

It is easier to see the wires on the older 0W04161 terminator as they are orange and make it pretty clear.

Thanks again!