DRS4D-NXT Ethernet connection

[jkleins]

I needed to remove the Ethernet connector to run the wire in my mast and lost the connector to figure out how the wires lined up in the new connector. Does anyone know which pins the orange and blue twisted pairs that come form the radar match up to in the connector?

Thanks,
Jim

 

[Johnny Electron]

The DRS4DNXT uses a pigtail cable. The RJ45 you are talking about is the one inside the dome or the other end going to the hub/MFD?

 

[jkleins]

The one going to the MFD. it has a power cable and a separate Ethernet connector

 

[seaveepete]

I will check my unit this afternoon and take a picture of the connector at the MFD end and/or draw a diagram for you. Stay tuned.

 

[jkleins]

Thank you very much.

 

[seaveepete]

The picture isn't great but here you go. This is the MFD-side RJ45 connector from the DRS4D-NXT. Hope this helps.

 

[Johnny Electron]

Thanks Seaveepete for the photo. The cable is a cross over so each end is wired differently. Seaveepete has the MFD end you are looking for. Just in case you can't fully see, it is pinned out like this.

PIN
1 White/Orange
2 Orange
3 White/Blue
6 Blue

 

[jkleins]

That is exactly what I need.

 

[einstein]

jkleins did this work for you?

Somehow the RJ45 connector came off my NXT. I've wired the connector as shown in the attached photo - this is the end that I plug into my computer. But somehow, the radar isn't working.

I see some blinking lights when I plug in the cable to my computer and windows says the network device is fine. However, TimeZero software running on my PC shows that the radar isn't doing any scans.

 

[einstein]

Just to add more detail, with the radar ethernet cable wired as in my previous post, the TimeZero software recognizes the radar when it's connected.

However the radar drops out a few moments after pressing the TX button (to start transmission), and the software displays a message "Connection Lost: Radar".

The radar status is always "standby", until when I press the TX button, which is when it changes to "connection lost".

I'm curious whether anyone has come across this "Connection Lost" issue. Previous times I've used this radar without a problem.

 

[Johnny Electron]

First thing I note is your RJ45 isn't shielded. The factory cable and connector are (for good reason). The connector internally looks a bit mangled also. Keep in mind this cable needs to pass high speed communications.

 

[einstein]

@Johnny Electron, I opened up the DRS4D-NXT and looked at the RJ45 Ethernet connector on the radar end, and the wiring is as follows:

PIN
1 White/Orange
2 Orange
3 White/Blue
6 Blue

You previously mentioned in this thread "the cable is a cross over so each end is wired differently. Seaveepete has the MFD end you are looking for. Just in case you can't fully see, it is pinned out like this"

Which is exactly the same as my radar end pin out above. So it sounds like this is a straight through/patch and not a crossover cable after all, given that seaveepete's MFD end is the same as my radar end?

Could someone please confirm whether the pinouts on either end are exactly the same or different? The connector on my MFD end got ripped off, so I can't confirm.

 

[Johnny Electron]

In regards to the original DRS cables (RJ45 to RJ45) it is a cross over cable as discussed on this forum. In regards to the NXT, it uses a different cable. The dome has a pigtail to a round connection as shown. Because the NavNet ports are auto sensing, the radars will work wired as a straight or cross over configuration.