HP PN1050 - Manual (Page 41)

ENWW TCP/IP Configuration 41
Note If your system uses Network Information Service (NIS),
you need to incorporate changes to the NIS host and ethers
databases.
8. Turn the projector on.
9. To verify that the card is configured with the correct IP address, use the
ping utility. At the prompt, type:
ping
where is the assigned address from RARP.
10. If ping does not respond, see Chapter 6 .