Re: mini SMB connector type?
MCX?
Glenn
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On 7/16/2017 10:30 PM, Peter Gottlieb hpnpilot@... [hp_agilent_equipment] wrote: I have a piece of gear which uses coaxial connectors which look like push-on SMB
but are somewhat smaller.
Does anyone happen to know what they are called?
Peter
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Posted by: Peter Gottlieb <hpnpilot@...>
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Yahoo Groups Links
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Glenn Little ARRL Technical Specialist QCWA LM 28417
Amateur Callsign: WB4UIV wb4uiv@... AMSAT LM 2178
QTH: Goose Creek, SC USA (EM92xx) USSVI LM NRA LM SBE ARRL TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"
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I have a piece of gear which uses coaxial connectors which look like push-on SMB but are somewhat smaller.
Does anyone happen to know what they are called?
Peter
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Re: 141T reference replacement..a cure??
My Faux Pas, This should work: <<<
Dennis -------------------------------------------- On Sun, 7/16/17, 'Thomas S. Knutsen' la3pna@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote: Subject: Re: [hp_agilent_equipment] Re: 141T reference replacement..a cure?? To: "hp_agilent_equipment@..." <hp_agilent_equipment@...> Date: Sunday, July 16, 2017, 7:43 PM That link ain't gonna work, its to a file local on your computer! FWIW, there is no metal film resistors in the 141T, but there is a lot of carbon film resistors! Those should not be mixed up, as their preformance is quite different. BR.Thomas. 2017-07-17 1:25 GMT+02:00 Dennis Czelusniak czelusniakd@... [hp_agilent_equipment] <hp_agilent_equipment@...>: These tubes were designated as Z82R7. Spec sheet is at folowing link. >>> file:///C:/Documents%20and% 20Settings/Administrator/My% 20Documents/Downloads/ Signalite-Hivac%20neon% 20regulators-LM317.pdf <<< Who would think replacing this obsolete tube would cause such an upstir! Dennis ------------------------------ -------------- On Sat, 7/15/17, Jeremy Nichols jn6wfo@... [hp_agilent_equipment] <hp_agilent_equipment@ yahoogroups.com> wrote: Subject: Re: [hp_agilent_equipment] Re: 141T reference replacement..a cure?? To: hp_agilent_equipment@ yahoogroups.com Date: Saturday, July 15, 2017, 11:16 PM There might be some NOS parts somewhere but neither Google nor eBay brings up anything for "Signalite 82R7." Jeremy? Visit Your Group New Members 8 ? Privacy ? Unsubscribe ? Terms of Use
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Re: 141T reference replacement..a cure??
The file 'Signalite-Hivac neon regulators-LM317.pdf' is available from this link:
in a thread called '120V, 400mW Zener Diodes?' on the UK Vintage Radio Repair and Restoration Discussion forum at
?.
I saved a copy on my hard drive.
?
But the real gem is buried in the discussion.? The Philips PM3266 scope switched from a V116R2 to a zener/transistor circuit.
See the "Unit 7 - Focus" schematic on page 29.? Scans of the manual are out there.
?
They used a BZX79-C7V5 zener, whose tempco is +4mV/K, and a BF422 darlington pair whose tempco is -4.2mV/K.? The transistor pair?is stacked on top of the zener, cancelling the tempco's, and the base is driven by a resistive voltage divider which multiplies
(Vz + Vbe) by (R1+R2)/R2.? For?82V, we'd use .? Any quiet low-current zener with +4.2mV/K tempco would do.
?
However, the actual tempco of the zener is loosely controlled, +4 is just the typical value.? We're better off (and one component less) with a multiplied TL431.? This is in my opinion still the only approach that is simultaneously easy, cheap, and good.
?
Since it's the ratio and not the individual value that's important, any pair of thermally-coupled resistors with similar tempco's would work.? Metal film, carbon film, as long as the value is stable over time.
Best Regards,
Dave Wise
?
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From: hp_agilent_equipment@... on behalf of 'Thomas S. Knutsen' la3pna@... [hp_agilent_equipment]
Sent: Sunday, July 16, 2017 4:43 PM
To: hp_agilent_equipment@...
Subject: Re: [hp_agilent_equipment] Re: 141T reference replacement..a cure??
?
That link ain't gonna work, its to a file local on your computer!
FWIW, there is no metal film resistors in the 141T, but there is a lot of carbon film resistors! Those should not be mixed up, as their preformance is quite different.
BR.
Thomas.
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HP 8752C Calibration Issue - Help or Advice!
Hi all....I'm working on a 3 GHz 8752C network analyzer. It's like an HP 8753 but only does half of the S parameters. It has a Reflection port where the source comes out and a Transmission port where the output of the DUT would attach.
The issue is that it fails test 27 - Sys Ver Tests. It fails the Source Match (Trans Mode) test. I have replaced or moved all three samplers and replaced the coupler and source. None of these altered the failure. The trace always is about the same crossing the limit at about 600MHz and rising to about 12dB out of limit at 3 GHz.
I could use a better understanding of what the test is, and what affects it. So far, I have not been able to affect it much at all.
Note that all the adjustments were made and were successful. I have re-run test 53 - Freq Response Adj after every sampler change....
Help! help!
Dan in Chandler, AZ.
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Re: 141T reference replacement..a cure??
That link ain't gonna work, its to a file local on your computer!
FWIW, there is no metal film resistors in the 141T, but there is a lot of carbon film resistors! Those should not be mixed up, as their preformance is quite different.
BR. Thomas.
?
These tubes were designated as Z82R7. Spec sheet is at folowing link.
>>> file:///C:/Documents%20and%20Settings/Administrator/My%20Documents/Downloads/Signalite-Hivac%20neon%20regulators-LM317.pdf <<<
Who would think replacing this obsolete tube would cause such an upstir!
Dennis
--------------------------------------------
On Sat, 7/15/17, Jeremy Nichols jn6wfo@... [hp_agilent_equipment] <hp_agilent_equipment@yahoogroups.com> wrote:
Subject: Re: [hp_agilent_equipment] Re: 141T reference replacement..a cure??
To: hp_agilent_equipment@yahoogroups.com
Date: Saturday, July 15, 2017, 11:16 PM
There might be some NOS parts somewhere but
neither Google nor eBay brings up anything for "Signalite
82R7."
Jeremy?
On Sat, Jul 15, 2017 at
7:09 PM Doug dmcgarrett@...
[hp_agilent_equipment] <hp_agilent_equipment@yahoogroups.com>
wrote:
?
On 07/15/2017 05:00 PM, Bob Goodrich bobgoodrich84@...
[hp_agilent_equipment] wrote:
> Signalite 82R7
Wonder if it's still available. That was a l o n g
time ago!
--
4.
-- With Best regards, Thomas S. Knutsen.
?Please? avoid sending? me? Word? or? PowerPoint? attachments.
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Re: 141T reference replacement..a cure??
These tubes were designated as Z82R7. Spec sheet is at folowing link. file:///C:/Documents%20and%20Settings/Administrator/My%20Documents/Downloads/Signalite-Hivac%20neon%20regulators-LM317.pdf <<<
Who would think replacing this obsolete tube would cause such an upstir! Dennis -------------------------------------------- On Sat, 7/15/17, Jeremy Nichols jn6wfo@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote: Subject: Re: [hp_agilent_equipment] Re: 141T reference replacement..a cure?? To: hp_agilent_equipment@... Date: Saturday, July 15, 2017, 11:16 PM There might be some NOS parts somewhere but neither Google nor eBay brings up anything for "Signalite 82R7." Jeremy? On Sat, Jul 15, 2017 at 7:09 PM Doug dmcgarrett@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote: ? On 07/15/2017 05:00 PM, Bob Goodrich bobgoodrich84@... [hp_agilent_equipment] wrote: > Signalite 82R7 Wonder if it's still available. That was a l o n g time ago! -- Sent from my iPad 4.
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Thanks Vladan, I will post a question on the Keysight forum.
Roland.
________________________________
De : hp_agilent_equipment@...
[mailto:hp_agilent_equipment@...]
Envoy¨¦ : dimanche 16 juillet 2017 23:48
? : hp_agilent_equipment@...
Objet : RE: [hp_agilent_equipment] 8594E power supply
Hi Roland,
If the boards have HP logos, I would go back to this thread on the Keysight
forum
and ask MikeM if he can provide something, even if it's just similar. There
is a very good chance that the boards for the 8593E, 94E and 95E were just
variants of the same design, so any of those schematics might be useful even
if they have different part numbers. I don't have those schematics, but I
will look in my files and double check.
Vladan
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Hi Roland,
If the boards have HP logos, I would go back to this thread on the Keysight forum
and ask MikeM if he can provide something, even if it's just similar. There is a very good chance that the boards for the 8593E, 94E and 95E were just variants of the same design, so any of those schematics might be useful even if they have different part numbers. I don't have those schematics, but I will look in my files and double check.
Vladan
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Hi Vladan,
No way to find the exact schematics for my 8594E spectrum analyser power
supply! It looks like this is one HP production, have you an idea where
those schematics can be found?
Thanks,
Roland F8CHK
For all of you with the 859X series portable spectrum analyzers, here is
some information that may be useful. Earlier versions of the analyzers used
a power supply which was designed and made outside of HP. After a few years,
failures started surfacing and HP (re)designed the supply in-house. The
later supplies are therefore a HP design and those are the ones for which a
schematic is often available. Those schematics will have the HP logo, etc.
in the bottom right corner.
Vladan
________________________________
Posted by: pianovt@...
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Re: RAM backup battery in HP 8112A
Hi David, You do need the right sort! My 8112 didn't retain settings and hadn't for the couple of years I've owned it. I finally got round to doing something about it about 8 weeks back - opened it up, read the part number off the lithium battery I found inside and ordered a replacement. As I was about to fit it a closer look revealed what looked more like a trickle charge circuit and a quick measure confirmed it was really hoping for a 2.4V Nicad so that's what I fitted! The circuit configuration seemed to match that in the 8116 manual rather than anything I found for the 8112 all of which seemed to describe Li. It has worked fine since then BTW.
All the best Adrian
On Sunday, July 16, 2017 6:55 PM, "'David C. Partridge' david.partridge@... [hp_agilent_equipment]" wrote:
?
I'm looking at an 8112A, which is fitted with a Ni-Cd battery on the
processor board, rather than a Panasonic BR-2/3AT2P 3V Lithium primary cell.
The unit has serial 2343G01456 and processor board number 08116-66523. I
think this is covered by backdating changes 29 and 41.
What it doesn't say is the type of battery - I assume just about any 3.6V
Ni-Cd that will fit?
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Re: RAM backup battery in HP 8112A
When I removed it, I found it was a GP18AAK2A1H 2.4V NiCd. I found on pretty quickly.
D.
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-----Original Message----- From: hp_agilent_equipment@... [mailto:hp_agilent_equipment@...] Sent: 16 July 2017 19:19 To: hp_agilent_equipment@... Subject: Re: [hp_agilent_equipment] RAM backup battery in HP 8112A On 7/16/2017 10:55 AM, 'David C. Partridge' david.partridge@... [hp_agilent_equipment] wrote:
What it doesn't say is the type of battery - I assume just about any
3.6V Ni-Cd that will fit?
Assuming it's not going to be permanently trickle charged, rather only when it's powered up, an NiMH cordless phone battery pack would work well and they don't leak like NiCads inevitably will. Dan ------------------------------------ Posted by: Dan Rae <danrae@...> ------------------------------------ ------------------------------------ Yahoo Groups Links
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Re: Time Interval Multimeter on HP-1725A
I have a 1742A scope (AFAIK just a 1740A plus the multimeter) with that time interval multimeter on it. The 1742A manual includes basic operating instructions for the multimeter, which is referred to as "option 034." Service information, as an earlier reply noted, is limited to the Time-Interval Decoder A17 (part of the scope), which is covered in Service Sheet 16 of the 1742A manual. I do not have the manual for the multimeter itself but, as mine works, or at least I think it does, I might be able to make tests or measurements on mine if that would help you.
Jeremy?
?
Picked up an HP-1725A at Xenia this year with a couple of known defects including a non-functional Time Interval Multimeter option. Have the scope working for the most part.?
I have so far not found anything on the operation of the Time Interval Multimeter. Which is odd as most HP stuff is well covered online. Maybe I'm just not typing the correct search terms.
Can anyone help??
Thanks
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Re: RAM backup battery in HP 8112A
On 7/16/2017 10:55 AM, 'David C. Partridge' david.partridge@... [hp_agilent_equipment] wrote:
What it doesn't say is the type of battery - I assume just about any 3.6V
Ni-Cd that will fit?
Assuming it's not going to be permanently trickle charged, rather only when it's powered up, an NiMH cordless phone battery pack would work well and they don't leak like NiCads inevitably will. Dan
|
RAM backup battery in HP 8112A
I'm looking at an 8112A, which is fitted with a Ni-Cd battery on the
processor board, rather than a Panasonic BR-2/3AT2P 3V Lithium primary cell.
The unit has serial 2343G01456 and processor board number 08116-66523. I
think this is covered by backdating changes 29 and 41.
What it doesn't say is the type of battery - I assume just about any 3.6V
Ni-Cd that will fit?
|
Re: Anybody got a good LCR meter that they want to sell?
Dr. David Kirkby (Kirkby Microwave Ltd)
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Re: Time Interval Multimeter on HP-1725A
On Sun, Jul 16, 2017 at 5:22 PM, W0MPM.John@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote:
Picked up an HP-1725A at Xenia this year with a couple of known defects including a non-functional Time Interval Multimeter option. Have the scope working for the most part.
I have so far not found anything on the operation of the Time Interval Multimeter. Which is odd as most HP stuff is well covered online. Maybe I'm just not typing the correct search terms.
Can anyone help?
the multimeter option is covered by a separate service manual, but the time interval multimeter is a standard HP-3476A (or B, afair) with a separate switch to read either its inputs or the time interval dependent voltage present on all the 17xx scopes (always, as far as I remember). So you could use the 3476 service manual and schematics to fix the multimeter. With a slide switch in the "time interval" position, it reads the 1725's time interval output, which is covered by the scope manual. HTH Frank IZ8DWF
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Time Interval Multimeter on HP-1725A
Picked up an HP-1725A at Xenia this year with a couple of known defects including a non-functional Time Interval Multimeter option. Have the scope working for the most part.?
I have so far not found anything on the operation of the Time Interval Multimeter. Which is odd as most HP stuff is well covered online. Maybe I'm just not typing the correct search terms.
Can anyone help??
Thanks
|
Re: 141T reference replacement..a cure??
I'm afraid that radiologically enhanced neon bulbs are
pretty much a thing of the past. Once, the public viewed
the use of radioactive materials as being new and sciency.
Now, they are terrified... and the regulations are to match.
Once upon a time, I had a pair of steel enveloped reference
tubes, of this sort (really tiny, grain of rice sized) that
were hot as hell gamma wise. They were made for bomb fuses,
and were pulled from the trash by some dead relative of mine
at Diamond Ordinance and Fuse Labs in the '50s.
Tektronix scopes of the 513D era were full of glass cased,
silver covered neon like reference tubes that kick up the
geiger counter quite well.
I doubt one could economically run a production line that
made tubes like that anymore, what with the regulations
picture. The demise of the "radium girls" made that a
pretty sure thing.
-Chuck Harris
Jeremy Nichols jn6wfo@... [hp_agilent_equipment] wrote:
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There might be some NOS parts somewhere but neither Google nor eBay brings
up anything for "Signalite 82R7."
Jeremy
On Sat, Jul 15, 2017 at 7:09 PM Doug dmcgarrett@...
[hp_agilent_equipment] <hp_agilent_equipment@...> wrote:
On 07/15/2017 05:00 PM, Bob Goodrich bobgoodrich84@...
[hp_agilent_equipment] wrote:
Signalite 82R7 Wonder if it's still available. That was a l o n g time ago!
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Re: 141T reference replacement..a cure??
They really shouldn't. The aging problem is due to
sputtering of the electrode material onto the glass
envelope. This evaporated metal travels to the glass,
and knocks gas molecules/atoms to the surface where
they get permanently stuck in the sputtered metal.
Kind of a crude vacuum pump that eliminates the
very important gas from the envelope.
-Chuck Harris
'Gary Appel' garyappel@... [hp_agilent_equipment] wrote:
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Wouldn¡¯t NOS parts have the same problem from age?
Gary Appel
From: mailto:hp_agilent_equipment@...
Sent: Saturday, July 15, 2017 6:09 PM
To: hp_agilent_equipment@...
Subject: Re: [hp_agilent_equipment] Re: 141T reference replacement..a cure??
These guys claim to have a Z82R10 available for $5.95. It might be a suitable replacement.
It might require a change in the series Resistor R21.
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David C. Partridge
Jeremy Nichols
John W0MPM