Re: Need copy/scan/borrow one page from HP 8673C/D service manual 08
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On Thu, 20 Jul 2017 02:47:14 +0100, you wrote: I have a set of lines as follows:
IWR_R Write Strobe (rising edge) pulsed low to write data
IA_H_D_L Address or Data on AD0-AD4
IRD_L Read Strobe (active low) pulsed low to read data
AD0
AD1
AD2 Bi-di Address/Data Lines
AD3 controlled by strobes and
AD4 IA_H_D_L
The address should be latched when IA_H_D_L goes low
I want to display the active address in hex, whether read or write, and the
value of the data
How do I set this up in an 16700A? to display the way I want it clearly it
is relatively simple to just display the "raw" signal 0/1s
I have read the training guide but seem none the wiser for doing so :(. Just offhand: state mode. connect clocks to write strobe and read strobe (two pods). configure clocks to capture this on rising edge of read clock OR with write clock. If you want to see when the address sets up, I'd use either timing mode or yet a third clock for the address strobe and capture data then. timing mode works like a D flipflop, specify a signal on the clock pin and then the edge, qualify as needed. data is stored then. Same data can be viewed in timing mode, but the clock is not an edge change (any) or a timebase, it's the clock pin on the pod as you have defined it. Harvey
Thanks
Dave
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Re: HP3582A Display unreadable
Have you tried the test switch on A9? You should get two rows of capital A's, a square wave, and two more rows of A's at the bottom.? This "isolates the Processor Ram and the Processor I/O Bus from the Display Section." (I'm quoting the Service Manual here).? It won't give you a smoking gun but will rule out some areas.
Don't feel bad, I was ignored the first time I asked a question about a fixer upper 3582A I bought too.? Got it working finally though. :)
Dave
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I have a set of lines as follows:
IWR_R Write Strobe (rising edge) pulsed low to write data
IA_H_D_L Address or Data on AD0-AD4
IRD_L Read Strobe (active low) pulsed low to read data
AD0
AD1
AD2 Bi-di Address/Data Lines
AD3 controlled by strobes and
AD4 IA_H_D_L
The address should be latched when IA_H_D_L goes low
I want to display the active address in hex, whether read or write, and the
value of the data
How do I set this up in an 16700A? to display the way I want it clearly it
is relatively simple to just display the "raw" signal 0/1s
I have read the training guide but seem none the wiser for doing so :(.
Thanks
Dave
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Re: On buying gear. A happy story.
Jeremy,
Thanks, the meeting was about A Course In Miracles... my senior citizen efforts at spirituality ? Thanks for pictures - I would like to have found a manual before leaving the library and internet access tonight but could not... maybe tomorrow mid day I will find one online to read about the thing. thanks, Roy
?
Hope the meeting goes well. Being retired here, I got roped into several volunteer organizations and spend more time in meetings than I did when I was working!
I'll send pictures of the 8600A. Jeremy
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Re: HP 5347A frequency counter input level question
The signal generator output has been verified to be accurate. The 5347A reads the frequency quite accurately, so I think the A12 microwave assembly should be OK. I was just not sure if the counter could only take signals -10 dBm or lower in power? If you have an 5347A, could you verify that in your unit? I will have to dig into the service manual to figure out what triggers the overload annunciator.
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Re: Need copy/scan/borrow one page from HP 8673C/D service manual 08673-90022 or 08673-90100
Hello,
I understand your frustration. After seeing a recent ebay listing, link here:??(I only included this link so you can have a picture of the cover which was useful in my search below)
Well, needless to say I was partially upset that I missed that while on vacation =/. Still, I became revitalized at searching for this again. I ended up finding this link googling "8673C Volume 2 Manual" which the ebay pics helped.
Its diagrams are "broken up" or "cut up" in letter format but at least one can actually read values on this schematic. I haven't had the time to see if its complete or missing something though it seems to have "continuity" when I looked over one component diagram. Hope it helps. Kudos to the guy who took the time to scan it for free. ?
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Re: On buying gear. A happy story.
Hope the meeting goes well. Being retired here, I got roped into several volunteer organizations and spend more time in meetings than I did when I was working!
I'll send pictures of the 8600A. Jeremy
?
Jeremy,
Ok sounds good.? Thanks. Address is Roy Morgan PO Box 101 Bernardston MA. 01337 Physical address is 18 Center Street in? case shippper can't send box to Post office. Glad to see there is a manual... I have lost track of the suggested web sites that were mentioned on the HP list. Thanks - more tomorrow or tonight... got to get food before a meeting. Thanks much.. that thing will make my radio alignments MUCH easier.
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Re: On buying gear. A happy story.
Jeremy,
Ok sounds good.? Thanks. Address is Roy Morgan PO Box 101 Bernardston MA. 01337 Physical address is 18 Center Street in? case shippper can't send box to Post office. Glad to see there is a manual... I have lost track of the suggested web sites that were mentioned on the HP list. Thanks - more tomorrow or tonight... got to get food before a meeting. Thanks much.. that thing will make my radio alignments MUCH easier.
?
Roy,
My 8600A is serial number 2048A01572. It is complete and undamaged. I need to clean it up, put feet on it, etc., and make sure it still works¡ªhas been on the shelf for years! Also included is the factory operation/service manual, an Ed Matsuda copy with a plastic spiral binding. How about $125 and I'll pack and ship it for free? Jeremy N6WFO
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Re: 141T reference replacement..a cure??
While it's true that incident light may not be a viable solution, aren't we having fun? Somebody blowing fuses, please try it! I am exasperated that I don't have time or space to examine my other 141T mainframe which is said to have "a power supply problem". I promised to help my neighbor with a tape deck, and that will keep me on the sidelines for a while. I will, at least, scope the +100V transient of the working mainframe. My flickering power strip is powering this computer. Once I swap it out, I can compare its illuminated strike voltage with another one that doesn't flicker. Is NE-2 normally used in lighted rocker switches, or something else? Will I be comparing apples to apples, or is it a fool's errand? Dave ________________________________________ From: hp_agilent_equipment@... <hp_agilent_equipment@...> on behalf of Chuck Harris cfharris@... [hp_agilent_equipment] <hp_agilent_equipment@...> Sent: Wednesday, July 19, 2017 10:20 AM To: hp_agilent_equipment@... Subject: Re: [hp_agilent_equipment] Re: 141T reference replacement..a cure?? Yes, but what it doesn't address is why the strike voltage has increased. It typically increases because the pressure inside of the bulb/tube has decreased due to gas atoms/molecules being captured on the bulb/tube walls. Changes in gas pressure cause dramatic changes in both the strike voltage, and the ionization, or regulation, voltage. You may be able to get it to glow once again, but will it regulate at the 82, or so volts that is necessary? My guess is it will be much higher. -Chuck Harris 'Alan Melia' Alan.Melia@... [hp_agilent_equipment] wrote: Hello David, that is a very interesting experiment you did! The LEDs that use a
white phosphor have a fair amount of UVA I believe. It is possible the hanging a
LED in the vicinity of the Neon may be a relatively easy cure.....certainly easier
than lifting the PCB !!
Well done! Alan G3NYK
----- Original Message ----- From: david_wise@... [hp_agilent_equipment]
To: hp_agilent_equipment@... Sent: Wednesday, July 19, 2017 3:43 PM
Subject: Re: [hp_agilent_equipment] Re: 141T reference replacement..a cure??
I found a power strip with a flickering indicator. When I shone a LED flashlight
on it, it went steady. I don't have a photometer, so it's all "by guess by
golly", but I think that phosphor-type white is more effective than tri-band. I
will search my junkbox for an orange one. Any other suggestions?
------------------------------------ Posted by: Chuck Harris <cfharris@...> ------------------------------------ ------------------------------------ Yahoo Groups Links
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Re: 141T reference replacement..a cure??
I confirm your experimental results.
Jeremy
?
I found a power strip with a flickering indicator.? When I shone a LED flashlight on it, it went steady.? I don't have a photometer, so it's all "by guess by golly", but I think that phosphor-type white is more effective than tri-band.? I will search my junkbox for an orange one.? Any other suggestions?
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Re: On buying gear. A happy story.
Roy,
My 8600A is serial number 2048A01572. It is complete and undamaged. I need to clean it up, put feet on it, etc., and make sure it still works¡ªhas been on the shelf for years! Also included is the factory operation/service manual, an Ed Matsuda copy with a plastic spiral binding. How about $125 and I'll pack and ship it for free? Jeremy N6WFO
?
Jeremy,
Hi, and thanks for the email.? As I said, there was an 8600 for sale recently at a very low price (fifty dollars!!) and I missed seeing it.? One other is offered at some $500.? Ugh. Anyway, if you have one, do let me know what you might want for it.? I do appreciate the possibility. PS: If you see some garbage at the bottom of this message, I have *tried* to delete it - I just upgraded my operating system (Mac Book) and the editing is acting strangely.
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Re: 141T reference replacement..a cure??
Yes, but what it doesn't address is why the strike
voltage has increased. It typically increases because
the pressure inside of the bulb/tube has decreased due
to gas atoms/molecules being captured on the bulb/tube
walls.
Changes in gas pressure cause dramatic changes in both
the strike voltage, and the ionization, or regulation,
voltage.
You may be able to get it to glow once again, but will
it regulate at the 82, or so volts that is necessary?
My guess is it will be much higher.
-Chuck Harris
'Alan Melia' Alan.Melia@... [hp_agilent_equipment] wrote:
toggle quoted message
Show quoted text
Hello David, that is a very interesting experiment you did! The LEDs that use a
white phosphor have a fair amount of UVA I believe. It is possible the hanging a
LED in the vicinity of the Neon may be a relatively easy cure.....certainly easier
than lifting the PCB !!
Well done! Alan G3NYK
----- Original Message ----- From: david_wise@... [hp_agilent_equipment]
To: hp_agilent_equipment@... Sent: Wednesday, July 19, 2017 3:43 PM
Subject: Re: [hp_agilent_equipment] Re: 141T reference replacement..a cure??
I found a power strip with a flickering indicator. When I shone a LED flashlight
on it, it went steady. I don't have a photometer, so it's all "by guess by
golly", but I think that phosphor-type white is more effective than tri-band. I
will search my junkbox for an orange one. Any other suggestions?
|
Re: On buying gear. A happy story.
Jeremy,
Hi, and thanks for the email.? As I said, there was an 8600 for sale recently at a very low price (fifty dollars!!) and I missed seeing it.? One other is offered at some $500.? Ugh. Anyway, if you have one, do let me know what you might want for it.? I do appreciate the possibility. PS: If you see some garbage at the bottom of this message, I have *tried* to delete it - I just upgraded my operating system (Mac Book) and the editing is acting strangely.
?
Roy, I have a surplus 8600A. Please contact me off line.? --
4.
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Re: 141T reference replacement..a cure??
?
Hello David, that is a very interesting experiment
you did! The LEDs that use a white phosphor have a fair amount of UVA I believe.
It is possible the hanging a LED in the vicinity of the Neon may be a relatively
easy cure.....certainly easier than lifting the PCB !!
?
Well done!
Alan
G3NYK
?
----- Original Message -----
Sent: Wednesday, July 19, 2017 3:43
PM
Subject: Re: [hp_agilent_equipment] Re:
141T reference replacement..a cure??
I
found a power strip with a flickering indicator.? When I shone a LED
flashlight on it, it went steady.? I don't have a photometer, so it's all
"by guess by golly", but I think that phosphor-type white is more effective
than tri-band.? I will search my junkbox for an orange one.? Any
other suggestions?
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Re: On buying gear. A happy story.
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Re: Experience with AliExpress for connectors
I have used AliExpress for years without a? big problem.? The only trouble was with some transistors; I ended up with counterfeit but by the time I discovered it, the warranty had expired.? The 'buyer protection' isn't worth much.? And of course AliBaba can't verify that the parts aren't counterfeit, since they are just agents and don't actually handle the parts.
All the other stuff has been exactly as described.? A couple of Kelvin clips weren't too well designed but again, nobody was trying to put one over and I do use them anyway.? The prices are so low you can afford an occasional anomaly.
Bob
On Wednesday, July 19, 2017 9:11 AM, "John Griessen john@... [hp_agilent_equipment]" wrote:
On 07/19/2017 10:01 AM, 'David C. Partridge' david.partridge@... [hp_agilent_equipment] wrote:
> <
> 4-16-18/32802964953.html?spm=2114.search0104.8.60.UYHEap>
>
> Offering them at a lower price than Lemo and seemingly offering small orders
> and free shipping.
>
> Are they OK to deal with or would I be throwing my money down a black hole?
I think all such sellers need some due diligence.? Start a conversation with them on alibaba/aliexpress messaging, and if they are answering helpfully switch to email, research their independent site, ask lots of questions and if they don't seem like a trading company, but a manufacturer, buy some of them to try. I get easy refunds for problems with misc. tools and parts bought on aliexpress.com. Send a photo of the problem/mismatch/missing piece and they refund your money. ------------------------------------ ------------------------------------ ------------------------------------ Yahoo Groups Links <*> To visit your group on the web, go to: ? ? <*> Your email settings: ? ? Individual Email | Traditional <*> To change settings online go to: ? ? ? ? (Yahoo! ID required) <*> To change settings via email: ? ? hp_agilent_equipment-digest@... ? ? hp_agilent_equipment-fullfeatured@...<*> To unsubscribe from this group, send an email to: ? ? hp_agilent_equipment-unsubscribe@...<*> Your use of Yahoo Groups is subject to: ? ?
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Re: Experience with AliExpress for connectors
On 07/19/2017 10:01 AM, 'David C. Partridge' david.partridge@... [hp_agilent_equipment] wrote: <
4-16-18/32802964953.html?spm=2114.search0104.8.60.UYHEap>
Offering them at a lower price than Lemo and seemingly offering small orders
and free shipping.
Are they OK to deal with or would I be throwing my money down a black hole? I think all such sellers need some due diligence. Start a conversation with them on alibaba/aliexpress messaging, and if they are answering helpfully switch to email, research their independent site, ask lots of questions and if they don't seem like a trading company, but a manufacturer, buy some of them to try. I get easy refunds for problems with misc. tools and parts bought on aliexpress.com. Send a photo of the problem/mismatch/missing piece and they refund your money.
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Re: HP 5347A frequency counter input level question
Just suggesting you verify your signal generator before you have an unrecoverable oops. The front panel input goes into A12 Microwave Assembly, you do not want to smoke that, U1 Sampler is one part I have never located other than in another unit. The output goes to A6 IF AMP / Detector, there is an adjustment for the overload point. Perhaps obtain a manual and go thru the procedures. Better safe than @$#%!
Dennis
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On Wed, 7/19/17, donald_s_58103@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote:
Subject: [hp_agilent_equipment] HP 5347A frequency counter input level question
To: hp_agilent_equipment@...
Date: Wednesday, July 19, 2017, 7:32 AM
I have just acquired an HP 5347A frequency counter.
A quick run-through appears to show that the instrument is
working and displays frequencies correctly on both input 1
and input 2. Input 1 (the high-frequency input, 500 MHz to
22 GHz) has an input power level of +7 dBm Max. However, on
my unit, I get the "Overload" message if I exceed
about -10 or -11 dBm. Is this normal? I thought I could
input up to +7 dBm without overloading the input?
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David C. Partridge
Jeremy Nichols