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Re: BNC that does not have the bayonet lugs

 

Paul,
?
Do you have a photo of the connectors you are looking for ?
?
Rgds
Eric
Re: BNC that does not have the bayonet lugs

 

How about a Push-On BNC connector

On Wed, May 21, 2025, 5:31?PM Paul Bicknell via <admin=[email protected]> wrote:
Hi Dave thank you I have both the? SHV and the MHV? connecters that are the size of the BNC connecters? but they all have the Bayonet lugs on them

The connecters I want are the size of the above but without the Bayonet lugs and connect together as a push fit without twisting and to release you pull the outer ring back

Regards Paul



-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Dave McGuire via
Sent: 21 May 2025 01:59
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] BNC that does not have the bayonet lugs


? ?There's another one, called "SHV".? It's common in the world of lasers and particle physics.

? ? ? ? ? ? ? ? -Dave

On 5/20/25 20:36, Bill Carver wrote:
> High voltage BNC = "MHV" connector. I used it in RG8 for 3.5
> KV-and-ground? to tube amplifier.
> W7AAZ
>
>
> On 5/20/2025 3:39 PM, Mike via wrote:
>> SHV?
>>
>>
>> 73, Mike,
>>
>> Mike Stevens,
>>
>> G8CUL/F4VRB.
>>
>>
>> From: [email protected]
>> <[email protected]> On Behalf Of Paul Bicknell
>> via
>> Sent: 20 May 2025 22:05
>> To: [email protected]
>> Subject: [HP-Agilent-Keysight-equipment] BNC that does not have the
>> bayonet lugs
>>
>>
>> Hi all a bit off base? but has anyone ever come across a connector
>> that is the same size and form as a BNC but it does not have the
>> bayonet lugs and uses a locking grove where the lugs would be? it is
>> Made by Radial? and there is even a High voltage version with more
>> insulation like the high voltage BNC? as I would like to get hold of
>> a few mating sets
>>
>> Regards Paul? located in the? UK
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
>
>
>


--
Dave McGuire, AK4HZ
New Kensington, PA
Re: BNC that does not have the bayonet lugs

 

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Hi john

?

Yes that is possibly ok for the sockets as some BNC connecters do have a grove by the lugs? but it is getting the mating connecters to go on the cable that is the problem

Regards Paul

?

From: [email protected] [mailto:[email protected]] On Behalf Of John Pease via groups.io
Sent: 21 May 2025 01:15
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] BNC that does not have the bayonet lugs

?

I have the same problem, but I do not need to design for manufacturing. The dremel tool made short work of the lugs/nubs.
Re: BNC that does not have the bayonet lugs

 

Hi Dave thank you I have both the SHV and the MHV connecters that are the size of the BNC connecters but they all have the Bayonet lugs on them

The connecters I want are the size of the above but without the Bayonet lugs and connect together as a push fit without twisting and to release you pull the outer ring back

Regards Paul

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Dave McGuire via groups.io
Sent: 21 May 2025 01:59
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] BNC that does not have the bayonet lugs


There's another one, called "SHV". It's common in the world of lasers and particle physics.

-Dave

On 5/20/25 20:36, Bill Carver wrote:
High voltage BNC = "MHV" connector. I used it in RG8 for 3.5
KV-and-ground to tube amplifier.
W7AAZ


On 5/20/2025 3:39 PM, Mike via groups.io wrote:
SHV?


73, Mike,

Mike Stevens,

G8CUL/F4VRB.


From: [email protected]
<[email protected]> On Behalf Of Paul Bicknell
via groups.io
Sent: 20 May 2025 22:05
To: [email protected]
Subject: [HP-Agilent-Keysight-equipment] BNC that does not have the
bayonet lugs


Hi all a bit off base but has anyone ever come across a connector
that is the same size and form as a BNC but it does not have the
bayonet lugs and uses a locking grove where the lugs would be it is
Made by Radial and there is even a High voltage version with more
insulation like the high voltage BNC as I would like to get hold of
a few mating sets

Regards Paul located in the UK












--
Dave McGuire, AK4HZ
New Kensington, PA
Two ex MOD HP 3561A DSA's for sale in the UK.

 

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Hi.

In case anyone is looking for a parts unit, or project, there are two HP3561A DSA's up for grabs on the UK auction site:-

??? ?? (Scroll down.)

One with handle, one without.? Both look a bit sorry for themselves, but seem complete (from the outside photo's) if scruffy.

Current starting bids are ?50 (no handle) and ?100 (with handle) UKP.

NO AFFILIATION, just for info.

Should anyone wish to take a punt at one or both, make sure you read the T's & C's before committing yourself!? (Fee's and taxes etc.)

Regards.

Dave 'KBV.? (Who has no spare room for such things!)
Re: BNC that does not have the bayonet lugs

 

TNC thread on types perhaps? Same form factor as a BNC except for the thread on feature.

Don Bitters
Re: HP 8566B repair

 

The ACLU’s have been known to fail for various reasons, I have replaced 4 or 5 of them in the past. It may be possible to repair it if you have the skill set to repair microcircuits. If not there are a few guys on the forum that do.
One of the failure modes was if you rotated the ACLU module 90* and it clunked - the internal circuitry bond to the case has failed and it is loose inside and the bond wire to the case connectors are probably broken.
I suspect very strongly that you will now have to do the full frequency tune and frequency response adjustments, an involved procedure.

Don Bitters
Re: BNC that does not have the bayonet lugs

 

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When contemplating use of such connectors for high voltage and high current … meaning more than microamps for a PM tube, think long and hard about whether you have a guarantee that ground will make before the high voltage, as well as any connectors that might potentially mate with either modified or unmodified connectors and whether the other end of the connector poses a similar hazard for any residual stored charge.



From: [email protected] <[email protected]> on behalf of John Pease via groups.io <john_pease123@...>
Sent: Tuesday, May 20, 2025 7:14:39 PM
To: [email protected] <[email protected]>
Subject: Re: [HP-Agilent-Keysight-equipment] BNC that does not have the bayonet lugs
?
I have the same problem, but I do not need to design for manufacturing. The dremel tool made short work of the lugs/nubs.
Re: HP8757A Display Problem (Scalar Network Analyzer)

 

Success! (Well, 96% success, I still must do the final adjustments over again after this nights(!) work, it is 04:28 in the morning as I type this!)...
?
On circuit board A1 there is a pre-set pot A1-R70 which sets the writing speed - and while checking other waveforms with the 'scope probe and also checking some of the voltages around R70 - R73 I noticed that the test waveform (Pikes peak) would suddenly judder - tapping that corner of the board near those components did the same - so I decided to take out that board and examine it again.
?
Looking at it, the solder joints for the R70 pot and R72 (274R) and R73 (56.2K) they looked 'dry'. ON cleaning all the joints for resistors R70 - R73 them to re-solder them, the wire from R71 (75K) became loose and dropped from the hole! On the other side, it had detached from the resistor body.
?
Since the pre-set pot R70 went from -15V to +15V, the centre voltage being divided by R71 and R72, the actual voltage fed to the writing I.C. to set the writing speed does not need to be so accurately divided so I was able to replace all 3 resistors with E12 values with 2% tolerances which I have plenty of in stock - so I used 47K for R71, 270R for R72 and 56K for R73 after taking out all 3 resistors and cleaning the solder side of the board for the new resistors.
?
Re-setting the board in place and powering up the unit (display now back in the instrument) I used the front panel keys to call up the test pattern, and I was able to adjust R70 to obtain the 7 'dashes' in the set of lines at the lower right corner of the display (as the service manual calls for) - I had to re-adjust the main intensity and background intensity settings for the "bright" and "normal" levels which are of course controlled by the vector writing timing - but I had a working display unit and it also presented the instrument waveforms as expected except for some of the astigmatism and focus issues - these I will deal with tomorrow (today!) morning later on.
?
Looking back on it all, many of the observations and measurements I made must have been clearly affected by the intermittent voltages created by these resistors and their soldered joints due to vibration and the odd knock as I moved the unit around while working on it.
?
I will post a final note when I have completely finished with the final adjustments and closed up the instrument.
?
Thank you again for all of the hints and tips, and to Philip, thanks a great deal for taking all the time to help me with this problem.
?
?
Re: BNC that does not have the bayonet lugs

 

There's another one, called "SHV". It's common in the world of lasers and particle physics.

-Dave

On 5/20/25 20:36, Bill Carver wrote:
High voltage BNC = "MHV" connector. I used it in RG8 for 3.5 KV-and-ground? to tube amplifier.
W7AAZ
On 5/20/2025 3:39 PM, Mike via groups.io wrote:
SHV?


73, Mike,

Mike Stevens,

G8CUL/F4VRB.


From: [email protected] <[email protected]> On Behalf Of Paul Bicknell via groups.io
Sent: 20 May 2025 22:05
To: [email protected]
Subject: [HP-Agilent-Keysight-equipment] BNC that does not have the bayonet lugs


Hi all a bit off base? but has anyone ever come across a connector that is the same size and form as a BNC but it does not have the bayonet lugs and uses a locking grove where the lugs would be? it is Made by Radial? and there is even a High voltage version with more insulation like the high voltage BNC? as I would like to get hold of a few mating sets

Regards Paul? located in the? UK








--
Dave McGuire, AK4HZ
New Kensington, PA
Re: BNC that does not have the bayonet lugs

 

High voltage BNC = "MHV" connector. I used it in RG8 for 3.5 KV-and-ground? to tube amplifier.
W7AAZ

On 5/20/2025 3:39 PM, Mike via groups.io wrote:
SHV?


73, Mike,

Mike Stevens,

G8CUL/F4VRB.


From: [email protected] <[email protected]> On Behalf Of Paul Bicknell via groups.io
Sent: 20 May 2025 22:05
To: [email protected]
Subject: [HP-Agilent-Keysight-equipment] BNC that does not have the bayonet lugs


Hi all a bit off base but has anyone ever come across a connector that is the same size and form as a BNC but it does not have the bayonet lugs and uses a locking grove where the lugs would be it is Made by Radial and there is even a High voltage version with more insulation like the high voltage BNC as I would like to get hold of a few mating sets

Regards Paul located in the UK
Re: BNC that does not have the bayonet lugs

 

I have the same problem, but I do not need to design for manufacturing. The dremel tool made short work of the lugs/nubs.
Understanding HP 54112D time base operation

 

The range setting in the 54112D allows you to specify the width of the main time display.? ?
From the documentation it looks as though it is possible to use any value for the graph width e.g. 60.5mS
Other parts of the manual indicate that the display width is fixed at 500 points
?
For both of these to be true, the scope software may either be resampling the data before it is displayed or dynamically changing the ADC sampling rate
?
Slightly newer HP scopes, like the 54504A, force the user to use a 1,2,5 sequence i.e. if you request a 60mS time graph width the scope will automatically round to the preferred value of 50mS.?
This seems to make more sense as each time width corresponds to a sample rate that could be derived by simple clock division
?
So I'm not 100% understanding how the 54112D allows you to use non-preferred steps when defining the time base
?
Is anyone able to cast some light or point me in the direction of relevant documentation?
?
Peter
Re: BNC that does not have the bayonet lugs

 

Paul
I know you say it's Radial but it sounds similar to the Lemo unipole connectors with their push-pull locking system, perhaps Radial make a similar range.
Might help
John
MW1FGQ
Re: BNC that does not have the bayonet lugs

 

Paul,

I have an old BWD 880 PowerScope oscilloscope (was manufactured in Australia) that is used for AC mains diagnostics that uses a similar connector except that it does not have the locking feature on the connectors. BWD calls them “Special snap-fit shrouded high voltage” connectors.

The connectors are basically lug-less BNCs and the mating probe connectors are simply are pushed over the BNCs. They are recessed in insulators in the panel. If you are curious I could send a photo. I have one replacement connector assembly for this unit and have been looking for a few more.

BWD PowerScope pamphlet:


Greg
Re: BNC that does not have the bayonet lugs

 

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Hi the connecter I am after is the same form and size as the BNC and TNC? but it has no screw thread or Banet lugs? it has a snap connecter action with a recess grove where the BNC lugs would be

?

Regards Paul

?

From: [email protected] [mailto:[email protected]] On Behalf Of Lynn C via groups.io
Sent: 20 May 2025 23:23
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] BNC that does not have the bayonet lugs

?

The internals of BNC and TNC connectors are the same, but TNC connectors have a threaded locking mechanism.

?

I have never seen any connector with BNC/TNC internals and just a locking groove (instead of the bayonet lugs on BNCs, and threads on TNCs).

?

SHV and MHV connectors have locking lugs like BNCs.

?

Lynn C. KA7FPH

?

On Tue, May 20, 2025 at 3:05?PM Paul Bicknell via <admin=[email protected]> wrote:

Hi all a bit off base? but has anyone ever come across a connector that is the same size and form as a BNC but it does not have the bayonet lugs and uses a locking grove where the lugs would be ?it is Made by Radial? and there is even a High voltage version with more insulation like the high voltage BNC ?as I would like to get hold of a few mating sets

Regards Paul? located in the? UK
Re: BNC that does not have the bayonet lugs

 

The internals of BNC and TNC connectors are the same, but TNC connectors have a threaded locking mechanism.

I have never seen any connector with BNC/TNC internals and just a locking groove (instead of the bayonet lugs on BNCs, and threads on TNCs).

SHV and MHV connectors have locking lugs like BNCs.

Lynn C. KA7FPH

On Tue, May 20, 2025 at 3:05?PM Paul Bicknell via <admin=[email protected]> wrote:

Hi all a bit off base? but has anyone ever come across a connector that is the same size and form as a BNC but it does not have the bayonet lugs and uses a locking grove where the lugs would be ?it is Made by Radial? and there is even a High voltage version with more insulation like the high voltage BNC ?as I would like to get hold of a few mating sets

Regards Paul? located in the? UK
Re: BNC that does not have the bayonet lugs

 

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Ok I will post a picture tomorrow as a bit late now

?

Regards Paul

?

From: [email protected] [mailto:[email protected]] On Behalf Of f1ghb via groups.io
Sent: 20 May 2025 23:00
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] BNC that does not have the bayonet lugs

?

Picture ?
Re: BNC that does not have the bayonet lugs

 

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Hi Mike

Thy can look like? the standard SHV but that has bayonet lugs on

?

?

From: [email protected] [mailto:[email protected]] On Behalf Of Mike via groups.io
Sent: 20 May 2025 22:39
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] BNC that does not have the bayonet lugs

?

SHV?

?

73, Mike,

Mike Stevens,

G8CUL/F4VRB.

?

From: [email protected] <[email protected]> On Behalf Of Paul Bicknell via groups.io
Sent: 20 May 2025 22:05
To: [email protected]
Subject: [HP-Agilent-Keysight-equipment] BNC that does not have the bayonet lugs

?

Hi all a bit off base? but has anyone ever come across a connector that is the same size and form as a BNC but it does not have the bayonet lugs and uses a locking grove where the lugs would be? it is Made by Radial? and there is even a High voltage version with more insulation like the high voltage BNC? as I would like to get hold of a few mating sets

Regards Paul? located in the? UK
Re: BNC that does not have the bayonet lugs

 

Picture ?
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