CAC-2170 60 Hz

Updated on 19-04-2018 in Adapters and Cables
2 on 29-01-2018

I’m trying to get 60 Hz working with LG 75UH5C. I have connected a MacBook Pro 2015 model with CAC-2170  and a high quality cable but can only get 30 Hz.

The same cable and display works with CAC-1070, so there has to be something wrong with the adapter. What could be the issue, perhaps a firmware update for the adapter is needed?

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0 on 29-01-2018

Good day Theremin,

The CAC-2170 has the same chip inside as the CAC-1070 and is already loaded witht eh latest “0.55” or “V7.55” firmware.

  • Setup

Setups with TV’s normally work best by making a custom resolution, in this case for: 3840*2160 at 60 Hz with Timing Standard set to CVT-RB (Reduced Blanking).

(For setups with Monitors Timing Standard can remain on “auto”.)

On most TV’s you will need to do some settings like “Enhanced Mode”/ “PC-Mode” and/or “UHD Color” for the HDMI 2.0 port in use. 

Please make sure the HDMI port of the Screen/TV supports 4K 60 Hz, often not all HDMI inputs support that.

  • Custom Resolution

To be able to generate such a Custom Resolution you will probably need an app like SwitchResX since MAC OS does not provide such settings.

Should be something like this, please do make sure to have it set to “CVT-RB”

 

 

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0 on 01-02-2018

Ok, I’ll have to try with another computer to verify. The cable and screen are capable since they work on another computer with CAC-1070.

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