telnet carriage return (with no line feed)

neuronetv said:

I'm using a windows 10 machine and running putty on it to telnet into a video switcher. The video switcher accepts SIS commands and one of the commands is ECI with a carriage return needed at the end of it - with no line feed. I don't really understand how a carriage return can have no line feed but I don't know how to deliver this in the telnet window. The video-switcher-user-manual uses a bent arrow symbol for a normal keyboard return but for this command it shows a straight arrow pointing to the left and the manual stipulates this as Carriage return (no line feed). How do I do this in telnet? Thanks for any help.

Sounds like putty is using the wrong terminal emulation configuration. You need to edit the parameters for the connection you have created for this task.

IIRC there is an option to set the line endings to send either CR (control-M), or CR/LF (control-M, control-J). In an emergency you can usually mimic these by using these explicit key combinations instead of the return key, until you get it figured out.