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'[EE]: HP 1650B logic analyser (and ebay) questions'
2004\06\11@133444 by Philip Pemberton

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Hi,
 Does anyone here use a HP 1650B or 1651B logic analyser? I'm thinking about
buying one and I've got a few questions that I need answering.
 - Besides HP themselves, were there any second-sources of the little grey
   "grabber" tips that connected up to the connector pods? The analysers
   seem to be quite regularly listed on ebay, but the pods and grabbers seem
   to be about as easy to find as a lump of 99.9% pure unobtainium.
 - Does anyone know if the disk drive fitted to the 1650B is capable of
   writing to 1.44MB disks or is it strictly 720K only?
 - Does anyone know of a source for manuals for the 1650B, either in
   electronic format (i.e. Djvu or PDF) or on paper? Has anyone written and
   published a quick-reference card of some form?

Ordinarily I would check the HP (well, Agilent) website, but the sum of the
info provided by Agilent is basically, "No support, no parts, perhaps you'd
like to buy one of our new analysers?"

Also, do any of the Ebay nuts here know what happens if, for example, I did
this:
 1) I place a bid of $50
 2) Someone bids up to $20
 3) I place a bid of $95

Assuming the bid increment is $1, would the bid at (3) cancel out the bid at
(1) (meaning the price stands at $51) or would it increase my maximum bid and
leave the current bid at $21? This kind of situation doesn't seem to be
covered by Ebay's online help.

Thanks.
--
Phil.                              | Acorn Risc PC600 Mk3, SA202, 64MB, 6GB,
spam_OUTphilpemTakeThisOuTspamdsl.pipex.com              | ViewFinder, 10BaseT Ethernet, 2-slice,
http://www.philpem.dsl.pipex.com/  | 48xCD, ARCINv6c IDE, SCSI
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2004\06\11@133857 by Shawn Wilton

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Well, can't help you with any of the HP stuff, but as for ebay your max
would be $95 and the current bid would be $21.

-Shawn


Philip Pemberton wrote:
{Quote hidden}

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2004\06\11@135557 by Tom

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At 06:36 PM 6/11/04 +0100, you wrote:
>Also, do any of the Ebay nuts here know what happens if, for example, I did
>this:
>  1) I place a bid of $50
>  2) Someone bids up to $20
>  3) I place a bid of $95
>
>Assuming the bid increment is $1, would the bid at (3) cancel out the bid at
>(1) (meaning the price stands at $51) or would it increase my maximum bid and
>leave the current bid at $21? This kind of situation doesn't seem to be
>covered by Ebay's online help.
>

1) You place a bid of $50
2) Someone bids up to $20

If the starting bid was say $10, then your bid will be entered as $10 (only
you and ebay know of your $50 max).  Then the person enters their $20 bid,
the posted bid will be in your name at $21.

Then the second person says "whoa. That's worth at least $30 to me" and
bids $30.  Then ebay reports you still have it at $31 and so on.

So you have it at $31 but are nervous so decide to raise your max to $95.

I haven't done any ebay for a while but the way it used to work was that
your new bid amound would cause ebay to post a new bid total which in this
case would be $32 in your name. You already had the high bid at $31 so this
doesn't make sense exactly but that's the way it worked a couple of years ago.

Good luck.
Tom

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2004\06\11@135805 by Mike Harrison

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On Fri, 11 Jun 2004 18:36:29 +0100, you wrote:

>Hi,
>  Does anyone here use a HP 1650B or 1651B logic analyser? I'm thinking about
>buying one and I've got a few questions that I need answering.
>  - Besides HP themselves, were there any second-sources of the little grey
>    "grabber" tips that connected up to the connector pods? The analysers
>    seem to be quite regularly listed on ebay, but the pods and grabbers seem
>    to be about as easy to find as a lump of 99.9% pure unobtainium.

I wouldn't recommend getting one without pods - they use wacky cable, and the  probe leads have
resistors in them. The grabbers are probbaly less of a deal - I think these should be fairly easily
gettable.

>  - Does anyone know if the disk drive fitted to the 1650B is capable of
>    writing to 1.44MB disks or is it strictly 720K only?

My 1650A is certainly 720K only, and I think the format is a bit odd, i.e. not PC readable directly.
I think HP have a utility to write sofware upgrades to a disk on a PC

>  - Does anyone know of a source for manuals for the 1650B, either in
>    electronic format (i.e. Djvu or PDF) or on paper? Has anyone written and
>    published a quick-reference card of some form?

I would be surprised if these weren't available somewhere - these analysers were very popular in
their day (and are still useful), but the manuals were written before the days of PDFs etc, and so
unless someone has scanned one (about 2" thick from memory) you may need to buy a paper one. there
are a number of companyies specialising in test equipment manuals.
{Quote hidden}

I'm pretty sure it would stay at $20, as you are the high bidder and are just revising your bid. If
someone else had beat your original $50, it would go up by the next increment.
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2004\06\11@140218 by Shawn Wilton

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Actually the bid does not stay the same and is upped by the bid
incremend.  That's why you don't want to change your max unless you have
been outbid.  Not logical, but that's the way the system works.

-Shawn



Mike Harrison wrote:

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2004\06\11@142334 by Philip Pemberton

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In message <40C9F3D2.8000906spamKILLspamblack9.net>
         Shawn Wilton <.....shawnKILLspamspam.....BLACK9.NET> wrote:

> Actually the bid does not stay the same and is upped by the bid
> incremend.  That's why you don't want to change your max unless you have
> been outbid.  Not logical, but that's the way the system works.
Ah well, at least I know that now.
I got outbid on the auction (by one bid increment AFAICT). To add insult to
injury, someone offered me a 1650B earlier this week for £120. I've since
found out that same person sold it for £1200 not two hours after emailing me.
Life - the only thing besides Windows 95 that sucks and blows at the same
time.
Anyone got a spare analyser they want rid of? At this moment in time, I
really don't mind _what_ it is as long as it has at least 32 channels and
samples at 20MHz or faster. If it were located in the UK (or somewhere in
Europe), so much the better. Offers by email to the address in my .sig,
please :)

Thanks.
-- Phil.                              | Acorn Risc PC600 Mk3, SA202, 64MB, 6GB,
EraseMEphilpemspam_OUTspamTakeThisOuTdsl.pipex.com              | ViewFinder, 10BaseT Ethernet, 2-slice,
http://www.philpem.dsl.pipex.com/  | 48xCD, ARCINv6c IDE, SCSI
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2004\06\11@143138 by Mike Harrison

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On Fri, 11 Jun 2004 19:22:52 +0100, you wrote:

>In message <40C9F3D2.8000906spamspam_OUTblack9.net>
>          Shawn Wilton <@spam@shawnKILLspamspamBLACK9.NET> wrote:
>
>> Actually the bid does not stay the same and is upped by the bid
>> incremend.  That's why you don't want to change your max unless you have
>> been outbid.  Not logical, but that's the way the system works.
>Ah well, at least I know that now.
>I got outbid on the auction (by one bid increment AFAICT).
It could have been by a lot - they just bid more than you - you can't tell by how much - if you bid
20 then they bid 1000, the bid would stay at 21 if nobody else bid.


{Quote hidden}

I'm in the UK, but would like to hang on to my 1650A, but if you end up needing a manual let me know
as I have an original and a photocopier!

There's a 1650A on Ebay USA with a $199 buy-it now - shipping would be quite a lot though.

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2004\06\11@145749 by Philip Pemberton

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In message <KILLspambgujc09ma4l7pb9pnv6auv7ppiikmfc7nnKILLspamspam4ax.com>>          Mike Harrison <RemoveMEmikeTakeThisOuTspamWHITEWING.CO.UK> wrote:

> There's a 1650A on Ebay USA with a $199 buy-it now - shipping would be
> quite a lot though.
If that's the one I saw earlier, then it's US shipping only anyway, as are
most of the analysers listed on eBay at this particular moment in time.
It's fast looking like the best option I've got would be to buy a few Xilinx
CPLDs, an ISA-bus prototyping board with both edge connectors, i.e. 16-bit
(do they still make those?), a few FIFOs, a JTAG interface and a few other
assorted bits. Now where did I put my pencil and my Isograph pens....

Later.
--
Phil.                              | Acorn Risc PC600 Mk3, SA202, 64MB, 6GB,
spamBeGonephilpemspamBeGonespamdsl.pipex.com              | ViewFinder, 10BaseT Ethernet, 2-slice,
http://www.philpem.dsl.pipex.com/  | 48xCD, ARCINv6c IDE, SCSI
... Law of Insurance and Taxes - Whatever goes up, stays up.

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2004\06\11@155755 by Michael Olson

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Mmmm, That hasn't happened to me. I often put in an early bid for Buy it
Now items to ensure it'll go the distance and have my final bid set to
snipe. Often no one else bids but the snipe hits and the price remains
the same.

-- Mike

Shawn Wilton wrote:

{Quote hidden}

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2004\06\11@161040 by Mike Harrison

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On Fri, 11 Jun 2004 19:57:00 +0100, you wrote:

>In message <TakeThisOuTbgujc09ma4l7pb9pnv6auv7ppiikmfc7nnEraseMEspamspam_OUT4ax.com>> >          Mike Harrison <RemoveMEmikespamTakeThisOuTWHITEWING.CO.UK> wrote:
>
>> There's a 1650A on Ebay USA with a $199 buy-it now - shipping would be
>> quite a lot though.
>If that's the one I saw earlier, then it's US shipping only anyway,
A lot of US sellers just leave 'us only' as the default - it's always worth asking if they'll ship -
I've only ever had a couple of refusals, althought I'm mainly afterf smaller stuff that's easier to
post.
I've bought some heavier test gear from the US and even with shipping it was significantly cheaper.

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