Enable the HSDL keywords that correspond
to the HSDL device you want to work with.
To enable HSDL keywords:
In a command shell, type dlcfg to open the software configuration
initialization file in a text editor.
Scroll down to the VTR KEYWORD section.
Some HSDL devices are
listed at the bottom.
Uncomment the keywords for the HSDL devices
that you want to enable.
If necessary, edit the serial port definition
in each line (/dev/tty4d<port#>) to
make sure it corresponds with the serial port that you want to use
for RS-422 remote control of the HSDL device.