Serial is the way to do it, either via the TRS cable above, or via the other serial connection on the back of the device; the manual contains pinouts. I made my own cable. You don't need an old computer; a USB to serial adapter works wonders, so it's just a matter of sourcing the software (which still works on Win11). If you contact Extron, they'll be more than happy to help with software.

RichB93 wrote on 2021-12-26, 14:49:

Serial is the way to do it, either via the TRS cable above, or via the other serial connection on the back of the device; the manual contains pinouts. I made my own cable. You don't need an old computer; a USB to serial adapter works wonders, so it's just a matter of sourcing the software (which still works on Win11). If you contact Extron, they'll be more than happy to help with software.

Hey! Thanks a lot for the tip! DO you think there could be any beneficial effects on the image video processing of the Extron RGB-HDMI 300A by updating the firware?

There could be, depending on how old the current firmware is. Do have a play with the settings, even after doing the auto setup on the image - doing some improved the image quality for me when capturing from a 3DFX card.

RichB93 wrote on 2021-12-26, 18:05:

There could be, depending on how old the current firmware is. Do have a play with the settings, even after doing the auto setup on the image - doing some improved the image quality for me when capturing from a 3DFX card.

Yeah. I've been fiddling with It for the last couple of days and improved image a lot. I use It for capturing DOS footage. I'll check the firmware update info and maybe I'll try and see if there is any improvement at all.

RichB93 wrote on 2021-12-26, 14:49:

Serial is the way to do it, either via the TRS cable above, or via the other serial connection on the back of the device; the manual contains pinouts. I made my own cable. You don't need an old computer; a USB to serial adapter works wonders, so it's just a matter of sourcing the software (which still works on Win11). If you contact Extron, they'll be more than happy to help with software.

Hey,

the manual is not very clear on this point. It's just stating RS-232 but when I search for usb to rs-232 adapter most of them are rs-232 TTL adapters, and I believe that TTL and RS-232 are actually different, or may I go ahead with a RS-232 TTL adapter ?

Thanks