I’m pretty sure you can fully control the projector including bringing the menus up by using the RS-232 Serial Port. Normally this serial cable comes from the scalar unit which also has both serial input & output ports that just pass through serial commands.
You would hook a computer to the serial port using a null-modem serial cable. Then open a Terminal program on the computer and issue the appropriate serial commands....Two problems though, most modern computers don’t have a serial port. This is easily remedied with an inexpensive USB-Serial Port dongle. Null-modem serial cables are also very inexpensive.
The second problem is finding what the various serial port control commands are. These are usually used by pro-installers in a whole integrated theater control system like Crestron... You might be able to find these commands on the internet or more likely, direct from Optima customer service....