HP-IL newbie question

[Sylvain Cote]

In loopback mode (interface cable plugged together, no peripheral)

Code:

[XEQ] [ALPHA] PWRDN [ALPHA]

The above command send a loop power down message across the loop.
No message will be displayed if the interface and cable are working correctly.
Message "TRANSMIT ERR" will be displayed if the interface and/or cable is defective.