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11-14-2001 09:39 AM
11-14-2001 09:39 AM
Solved! Go to Solution.
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11-14-2001 11:13 AM
11-14-2001 11:13 AM
Re: HP 7980 HPIB Interface
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11-14-2001 12:09 PM
11-14-2001 12:09 PM
Re: HP 7980 HPIB Interface
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11-19-2001 05:19 PM
11-19-2001 05:19 PM
SolutionHere's the sequence to rewind the tape:
MLA X [My Listen Address ]
MSA 1 [My Secondary Address 1 = Tape Cmd]
DAB 13 [Data byte of 13 = Rewind ]
Tagged with EOI (end or identify)
UNL [Unlisten]
(wait for parallel poll)
MTA X [My Talk Address
MSA 16 [Read Device Specified Jump]
DAB W/EOI [Device returns 0 or 1]
UNT [Untalk ]
Hopefully this gives you an idea of what's involved. If you need all the protocol specifics let me know. Unfortunately this was developed before the days of pdf files, so I'd have to find a paper manual and scan it in :-)
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11-20-2001 09:16 AM
11-20-2001 09:16 AM
Re: HP 7980 HPIB Interface
I would like to have the documentation. I have talked to at least ten different departments at hp to get my hands on it, so I am extremely grateful for your reply. I don't want to put you to work in the copy room though. Is there a document number that I could use to have a copy made, and shipped to me?
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11-20-2001 03:21 PM
11-20-2001 03:21 PM
Re: HP 7980 HPIB Interface
I suspect the documentation is out-of-print.
Send me your postal mail address to the following email address: ltt_team@hp.com, and I will make a hard copy for you.
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04-25-2002 12:07 AM
04-25-2002 12:07 AM
Re: HP 7980 HPIB Interface
"I am looking for the software protocol used to access files on the tape. Like, what command would I send to tell the tape to rewind or to store some data. If this drive is similar to other HPIB devices there should be some ASCII based message system that is used to control the drive. I am assuming the hardware interface will be easy to set up as long as addresses are assigned to the drive and master HPIB card."
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04-25-2002 11:53 AM
04-25-2002 11:53 AM
Re: HP 7980 HPIB Interface
I do have a hard copy of the HP-IB interface specifications for the 7974/7978/7979/7980. The last revision was in 1989.
If you want, I can send you a reproduction. Another fellow had recently requested it this manual, and suggested that he might be able to provide a scanned (electronic) copy back to me.
For background, the tape drive does not use ASCII messages (like many GP-IB instruments do). Rather, it uses secondary talk and listen addresses to specify commands and request status information. The command sequences are one or two bytes, and the status messages returned are one to six bytes. It should not be hard to write a driver for this. I can provide some tips on turning on a driver if you wish. Just send your email address to ltt_team@hp.com (if you have not already).
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09-05-2018 07:07 PM
09-05-2018 07:07 PM
Re: HP 7980 HPIB Interface
I am also looking for a copy of this document. This seems to be an ancient thread. Has a pdf version of this document ever been made which I could get a hold of? Any help would be appreciated. Thanks
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