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Re: Off-topic question re. oddball coax plug

 

I think you have a SMZ or BT-43 connector.
These were used to interconnect modules in some microwave gear.
They are 75 Ohms.



73
Glenn
WB4UIV

On 10/14/2018 9:48 PM, ac0xu wrote:
What is a coax plug that is essentially identical to an SMB male plug except it is bigger in diameter? The OD of the male plug is 0.245" or 6.2mm.

It has the same groove on the outside sleeve as an SMB, the same teflon liner just inside that, and a small diameter round pin in the center. There are no threads. I received some of these along with some Agilent equipment, but I don't think there is any connection.

Thanks!



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Re: Off-topic question re. oddball coax plug

 

Hi,
Thst will be a BT type 43 connector. It's a telecom 75 R type. Also know as an SMZ outside the UK.


Robert G8RPI
Re: Off-topic question re. oddball coax plug

Dr. David Kirkby from Kirkby Microwave Ltd
 

On Mon, 15 Oct 2018 at 02:48, ac0xu <james.schatzman@...> wrote:
What is a coax plug that is essentially identical to an SMB male plug except it is bigger in diameter? The OD of the male plug is 0.245" or 6.2mm.
?
Can't recall diameter, but SMC is used on some Agilent stuff.?

Dr David Kirkby Ph.D C.Eng MIET
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, CHELMSFORD, Essex, CM3 6DT, United Kingdom.
Registered in England and Wales as company number 08914892

Tel 01621-680100 / +44 1621-680100
Re: Missing button cover on HP network analyzer.

 

Very nice :)?

One other thing I just remembered is that the rubber membrane keyboard on an 8752x fits the 8753C - apart from one or two unimportant key labels.
I have an 8752 membrane on mine.



On Mon, 15 Oct 2018 at 18:44, Razvan <razvan@...> wrote:

It fits, has maybe 1mm of play.

Color wise, it needs a darker gray filament, otherwise it seems ok.

@Jeff, You could use a 3d hub near you to print it.


Razvan


On 2018-10-15 6:00 AM, Razvan wrote:

That's a great find!

I don't need the entire frame, just the button cover, so I'll print the second one.

I'll post pictures when it's done.

Thanks!


On 2018-10-15 1:35 AM, Roger Henderson wrote:
I designed this very basic one for my HP 8753


Also I found this one. It is just the button cover and looks much better than mine:


On Thu, 11 Oct 2018 at 14:48, Razvan <razvan@...> wrote:
Hey guys,

I'm missing the button cover on my HP 8752C. I know I'm not the only one
with this issue and I know they're close to impossible to find.

Is anyone willing to measure it and take some photos from above, side,
etc, so I can model it in a 3D program? I would then share the design
and everyone missing it, can print it.

Perhaps a volunteer with two network analyzers, one with a missing
button cover?


Razvan
Re: Missing button cover on HP network analyzer.

 

¿ªÔÆÌåÓý

It fits, has maybe 1mm of play.

Color wise, it needs a darker gray filament, otherwise it seems ok.

@Jeff, You could use a 3d hub near you to print it.


Razvan


On 2018-10-15 6:00 AM, Razvan wrote:

That's a great find!

I don't need the entire frame, just the button cover, so I'll print the second one.

I'll post pictures when it's done.

Thanks!


On 2018-10-15 1:35 AM, Roger Henderson wrote:
I designed this very basic one for my HP 8753


Also I found this one. It is just the button cover and looks much better than mine:


On Thu, 11 Oct 2018 at 14:48, Razvan <razvan@...> wrote:
Hey guys,

I'm missing the button cover on my HP 8752C. I know I'm not the only one
with this issue and I know they're close to impossible to find.

Is anyone willing to measure it and take some photos from above, side,
etc, so I can model it in a 3D program? I would then share the design
and everyone missing it, can print it.

Perhaps a volunteer with two network analyzers, one with a missing
button cover?


Razvan







soft buttons cover_1024.jpg

Re: HP 8642B develops issues when warming up

 

I should add the problems didn't occur right after powering on the generator, it was a over a period of an hour or more in which the incident finally started to occur. I have used this generator numerous times but not as long in duration and note no issues of any kind other than that moment of extended usage time.
Re: HP 8642B develops issues when warming up

 

I tried to duplicate the problem that occurred before. Run the generator at -70dB connected to a receiver with a audio source feeding the FM input with the deviation set to 150 kHz. I probed the test points on the regulator board to see if the +50 +15 -15 +5.2 -5.2 volt were there and steady and they were. After I ran the test for a while I did not run into the issue that occurred before so I checked the regulator voltages and they were fine. I checked for proper voltages and stability which I seen no issues. I will try to repeat this test later and see if the symptoms will occur.

As of the moment this generator works fine, frequency, amplitude, and various functions work as expected. Running the self test in the service mode brings up a failed test on A4 which I replaced that board but it still fails and rarely a19 fails a test yet the usability of the generator seems unaffected.

I realize I made a typo previously on this post. I indicated before A16 which is the attenuator for the 8642A however I have the 8642B, I meant to say A6, I apologize about that. This is the time base module. I recall before when I had the receiver connected to the output of the generator there would be brief occasional? break ups in the signal but it would come back, I finally and briefly got a flashing message stating A6 transient failure but that went away, and A19 was failing a test at that very same time. I turned everything off but did not unplug, after letting it set a while and turning back on everything worked fine.
Re: Missing button cover on HP network analyzer.

 

>Yeah, it's the same PN. I've been following ebay for the past year and none popped up.

The cover changed starting with the 8753C model (color display).

Vladan
Re: Missing button cover on HP network analyzer.

 

¿ªÔÆÌåÓý

That's a great find!

I don't need the entire frame, just the button cover, so I'll print the second one.

I'll post pictures when it's done.

Thanks!


On 2018-10-15 1:35 AM, Roger Henderson wrote:

I designed this very basic one for my HP 8753


Also I found this one. It is just the button cover and looks much better than mine:


On Thu, 11 Oct 2018 at 14:48, Razvan <razvan@...> wrote:
Hey guys,

I'm missing the button cover on my HP 8752C. I know I'm not the only one
with this issue and I know they're close to impossible to find.

Is anyone willing to measure it and take some photos from above, side,
etc, so I can model it in a 3D program? I would then share the design
and everyone missing it, can print it.

Perhaps a volunteer with two network analyzers, one with a missing
button cover?


Razvan
Re: Missing button cover on HP network analyzer.

 

On 2018-10-15 1:16 AM, Dr. David Kirkby from Kirkby Microwave Ltd wrote:
Your could try asking on /g/Test-Equipment-For-Sale-Wanted-or-Exchange/ to see if anyone has one to see - you might even get it free! I suspect that the same button iis used on various bits of test equipment. It looks llike the same as used on the 8753, 8720_ 4291B.
Yeah, it's the same PN. I've been following ebay for the past year and none popped up.
Off-topic question re. oddball coax plug

 

What is a coax plug that is essentially identical to an SMB male plug except it is bigger in diameter? The OD of the male plug is 0.245" or 6.2mm.

It has the same groove on the outside sleeve as an SMB, the same teflon liner just inside that, and a small diameter round pin in the center. There are no threads. I received some of these along with some Agilent equipment, but I don't think there is any connection.

Thanks!
Re: Missing button cover on HP network analyzer.

 

I certainly need a button cover for my 8753C. If anyone decides to print and sell these, please let me know.

By the way ¡ª is button spacing the same on all versions of the VNA? (For some reason that I no longer recall, I thought that the vertical spacing between my buttons was narrower than another 8753 that I saw. But I could be wrong.)

Thanks,

- Jeff
Re: Missing button cover on HP network analyzer.

Pete Manfre
 

¡­ now I remember¡­? those always break.?

Pete

On Sun, Oct 14, 2018, 6:35 PM Roger Henderson <hendorog@...> wrote:
I designed this very basic one for my HP 8753


Also I found this one. It is just the button cover and looks much better than mine:


On Thu, 11 Oct 2018 at 14:48, Razvan <razvan@...> wrote:
Hey guys,

I'm missing the button cover on my HP 8752C. I know I'm not the only one
with this issue and I know they're close to impossible to find.

Is anyone willing to measure it and take some photos from above, side,
etc, so I can model it in a 3D program? I would then share the design
and everyone missing it, can print it.

Perhaps a volunteer with two network analyzers, one with a missing
button cover?


Razvan
Re: Missing button cover on HP network analyzer.

 

I designed this very basic one for my HP 8753


Also I found this one. It is just the button cover and looks much better than mine:


On Thu, 11 Oct 2018 at 14:48, Razvan <razvan@...> wrote:
Hey guys,

I'm missing the button cover on my HP 8752C. I know I'm not the only one
with this issue and I know they're close to impossible to find.

Is anyone willing to measure it and take some photos from above, side,
etc, so I can model it in a 3D program? I would then share the design
and everyone missing it, can print it.

Perhaps a volunteer with two network analyzers, one with a missing
button cover?


Razvan
Re: Product Note 8970B

Pete Manfre
 

I don't have it but if I remember at is like using it like an x/y display


On Sun, Oct 14, 2018, 11:11 AM jfphp via Groups.Io <jfphp=[email protected]> wrote:

Hello,
I am looking for the product note? 8970B/S-4, "Displaying HP 8970B Noise Figure Meter Measurements on the HP 8757 Scalar Network Analyzer,"? pn 5959-8742..Thank you.
Re: Missing button cover on HP network analyzer.

Pete Manfre
 

I did not see the 1st email¡­ buttons for what??

Pete wa2odo

On Sun, Oct 14, 2018, 6:16 PM Dr. David Kirkby from Kirkby Microwave Ltd <drkirkby@...> wrote:
Your could try asking on /g/Test-Equipment-For-Sale-Wanted-or-Exchange/ to see if anyone has one to see - you might even get it free! I suspect that the same button iis used on various bits of test equipment. It looks llike the same as used on the 8753, 8720_ 4291B.

Re: Missing button cover on HP network analyzer.

Dr. David Kirkby from Kirkby Microwave Ltd
 

Your could try asking on /g/Test-Equipment-For-Sale-Wanted-or-Exchange/ to see if anyone has one to see - you might even get it free! I suspect that the same button iis used on various bits of test equipment. It looks llike the same as used on the 8753, 8720_ 4291B.
HP853A/8559A Problem

 

I have an HP853A Spectrum Analyzer display with the 8559A plugin. The display and plugin controls seem to work but it is not displaying a signal regardless of the setting. I tried an external signal as well the cal input. Can anyone offer any trouble shooting tips short of trying another plugin?

Thanks,

Mike N2MS
Re: [OT] - Bird 4391M Data connector information

 

Yes, Bird made 2 conversion boxes for th 4391 power analysts,? a 4380-488 and a 4380-232.? They were about the same size as the 4391 and sat under the 4391, attached with a short cable.? one box did the conversion to ieee-488, the other to rs-232.

Links to the manuals are here:
Re: [OT] - Bird 4391M Data connector information

 

Ok, Bird engineer courteously answered, M is the military version and the connector's function is meant to connect with either IEEE-488 or RS232 boxes.

So, it is not a serial port, needs (some) massaging to get proper data.

Giuseppe Marullo
IW2JWW - JN45RQ

On 10/6/2018 5:00 PM, Giuseppe Marullo wrote:
Hello,
sorry for the OT. I have purchased a old rf watt meter (still sold by
Bird AFAIK) but any pointer leads me to 4391A models, M is simply
unknown. The M version has a connector on its back panel, it should be
a serial connection (somewhat DA-15 ITT Cannon, the item is not in my
hands yet) but really I am at loss to find anything about it.
I asked Bird directly but there is nothing on their site about this
version/option.

Any help is appreciated, thanks in advance.

Giuseppe Marullo
IW2JWW - JN45RQ
59641 - 59660 of 151533