Cable Extension?

events

#21

I am also unable to extend the USB for my pimax5k. I have tried the following cables with no success.
Any help in finding a working cable would be appreciated

These 5 cables wouldn’t even allow the pimax to connect. USB device failed error

This next one worked but it had tracking issues and poor sound


#22

I’m wondering if it might be a matter of power, not length.

If you have a powered USB 3 hub, plug it into a wall outlet (duh) and place the hub in the middle, between the extension and the Pimax cable. Yes, some of the extensions you tried are active/amplifying, but they are drawing power from the USB connection itself, which would further reduce the power available to the headset.


#23

These are cables I use that work (links to Canadian Amazon):


#24

A update for those having troubles extending the Pimax5k

After trying a dozen USB cables passive and active that didn’t work I decided to follow a suggestion to try a powered usb hub. Obviously it is a power issue with the cables. The same cables that didn’t work with their own power adapter worked with the USB Hub. Most powered hubs come with 5V 2A or higher adapter were as the active usb cables only have 5V 1000ma to 2000ma. The adapter that comes with the pimax has an even higher output. I have tried two different 3.0 usb hubs with most of the cables and they have worked well. Longest extension cable I have tried is 5 meters or 16.4ft


#25

I’m sad to report that I have not found a long distance (10m+) cable that works with the Pimax 5k+.

I’ve tried these expensive optical cables:



(the 50ft version)

I also have several DisplayPort couplers - and no combination I have found to work with the Pimax and those cables.

On reddit, I had heard that these cables from Delock worked:
7.5m


10m

I could find no vendor in the US but was able to get them from a German company:
https://www.reichelt.de

Unfortunately… the 7.5m cable only works with the Normal FOV and 72Hz or less. Trying to run the Large FOV and/or 90Hz does not work. I was unable to get the 10m cable to work at all.

This 10ft extension does work for all FOV and refresh rates:


#26

Is it because of the quality of the cable or the spec calls for a max length?.. if not max length specifically, could you just connect the 3ft cable using a coupler or making your own cable?


#27

looks like they did not specify a max but it seems for DP 1.3/1.4 (HBR3) 5m is the normal limit and extending beyond this is not so safe

building your own cable is a problem because of the custom connector on the HMD side
also its not that simple as usb does need a repeater/hub when exceeding 5m

as you can read here even the normal 5m cable from pimax has problems and together with the DP and USB 5m limits its not just soldering a connector to a 10m cable, usb definitely needs a repeater/hub and when the DP signal for 10m also needs a active component it will get much more expansive then expected, maybe we will never see a 10m cable for a low price from pimax? (edit: i’m quiet pessimistic here, maybe to much, if a 5m extension including the plugs work, its at least possible to get a 10m cable as a whole - without the plugs - working, also i’m hoping for wireless, its harsh going back to cable from the vive/tpcast)

i extended my 5k+ connection with the following stuff (dc extension is not critical), the most critical seems to be the DP and i’d keep it as short as possible (7.5m did not work stable with the 5k+, the 5m was tempting but as i only need ~2m ordered a 3m DP extension)

DeLock DisplayPort extension cable 1.2 4K 60Hz 3m black, modelnumber: 83811
ASIN: B07HQCGJJK

Aten UE250-AT USB Extension (5m, USB 2.0)
ASIN B007TL3FBO

Liwinting 5m DC extension 3.5mm x 1.35mm
ASIN: B0768ZN85H


Anyone found a WORKING usb extension...?
Extension cable issues
#28

I’m using the 5m DeLock DP extension (4K 60Hz) with no issues so far.


#29

I guess only way to solve this issue is to multicast in super high frequency. Just pure streaming with no security protocols, no packet loss handling etc…


#30

AFAIK Pimax uses only HBR2 due to the limitations of the DP bridge from Analogix.


#31

right, totally forgot about that, anx7530 does not support HBR3 and its HBR2.5 mode seems to be a unsupported thing?, so HBR2 must be the limit (even if pimax has DP 1.4 in the specs for the 5k+/8k)