AV Access 4KEX70-L User manual

Brand: AV Access

Model: 4KEX70-L

Type: User manual

AV Access 4KEX70-L is a 4K HDMI extender that transmits 4K@60Hz 4:2:0 video and audio signals up to 230ft/70m over a single Cat5e/6/6A/7 cable. It supports HDR, HDCP 2.2, and EDID pass-through, ensuring compatibility with the latest 4K devices. The extender also features IR and RS232 pass-through, allowing you to control your source device from the remote location. With its simple plug-and-play design and long-range transmission capability, the 4KEX70-L is an ideal solution for extending 4K signals in residential and commercial applications.

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Troubleshooting

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1. What can I do if there is no video output?

It is recommended to use a Cat5E/6/6A/7 cable, instead of Cat5 or ﬂat cable.

Please make sure the total length of your cable is less than 70m/230ft for 1080P, 40m/131ft for 4K resolution.

Please make sure the connectors at both ends of the cable meet the IEEE T568B standard.

Use a new cable, or try crimping your Cat cable connectors according to the IEEE T568B standard.

If you need to use patch cables at both ends, the length should be as short as possible, no more than 5m/16ft. Please

ensure all connectors meet the same standard (IEEE T568B). Also, please note that the total length of the patch cables

and the Cat cable should not be over 70m/230ft.

2. What can I do if the “Link” LED indicator is o or blinking?

Check if your IR connection method is correct. The IR receiver cable needs to be connected to the “IR In” port at one end,

and the IR emier cable needs to be connected to the “IR Out” port at the other end. Please note that the 3.5mm cable

connectors need to be fully inserted into the IR ports.

Check if you use the remote controller correctly and if you place the IR emier head correctly. When you use the remote

controller, it needs to be directly facing the IR receiver head. Besides, the IR emier head should be placed closely to the

IR receiving window of the controlled device.

Try controlling the source device directly via your remote controller, without using the HDMI extender. Then check if the

IR connection works.

3. What can I do if IR connection is not working?

Check if the “Link” LED indicator is solid on. Also, check if the “HDCP” LED indicator is solid on or blinking.

Make sure the source device and the display device are powered on. And make sure the source device is outpuing

video signal while the correct HDMI input channel is selected on the display device.

Connect the source device to the display device directly via an HDMI cable, then set the source resolution to 4K@30Hz

or 4K@60Hz 4:2:0. If these two resolutions are not available, then set to 1080P. After you set the default resolution,

please re-connect the source device and the display device to the HDMI extender.

Make sure all of your HDMI cables work normally. You can connect the source to the display device directly via one of

these HDMI cables, to check if video can be shown normally on the display.

Check if the connection method of the RS232 cable between the HDMI extender and the control/controlled device is

correct. It should be “TX-RX, RX-TX, GND-GND”.

Perform an RS232 loopback test to see if the HDMI extender’s RS232 pass-through function can work normally.

Try connecting the control device and the controlled device directly without using the HDMI extender. Then check if the

RS232 connection works.

4. What can I do if RS232 connection is not working?

4KEX70-L

AV Access 4KEX70-L User manual

AV Access 4KEX70-L User manual

AV Access 4KEX70-L User manual

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