Dear group manager,
Which procedure must be followed to join this group?
73
Raymond ON4DBV
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Recall reg 7 is the last stored state. You can save instrument states in registers 0-7, 8 is the correction numbers.
Don Bitters
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Re: Off Topic - Looking for assistance with power sensors
Hi,
I will check my notes. I remember there were some GPIB DIAG and INIT commands that are not documented.
If you look at the PS-Cal and SureCal calibration software you will see they can read/write the new values via the power meter GPIB commands. Maybe for the newest sensors it is a little bit more difficult but for the HP branded E4413A that I had it was OK.
Regards,
Razvan
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On May 22, 2025 8:43:32 AM UTC, "F1EKU via groups.io" wrote: According to HPAK's technical documentation, it's impossible to write new calibration factors into the sensor because each time it requires calculating a checksum that the EPMs of the E4416/17/18/19 series cannot compute. They explain that for this, we must use the newer EPMs from the N1911/12/13/14 series. Personally, I've been able to read a sensor's entire block and write it back into another probe, but changing one or more values within the block always resulted in the inability to initialize the modified probe on an E44XX series power meter. Of course, HPAK uses an external program capable of calculating the checksum when they calibrate a sensor upon request and write the complete block, even with an E44XX power meter. Does anyone know the solution for calculating the checksum?
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Re: Off Topic - Looking for assistance with power sensors
Of course, I would be very interested in knowing the solution for writing to R&S NRV-ZXX series sensors, as the documentation I've read doesn't mention it. It seems that specific software is required for this.
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Re: Off Topic - Looking for assistance with power sensors
According to HPAK's technical documentation, it's impossible to write new calibration factors into the sensor because each time it requires calculating a checksum that the EPMs of the E4416/17/18/19 series cannot compute. They explain that for this, we must use the newer EPMs from the N1911/12/13/14 series. Personally, I've been able to read a sensor's entire block and write it back into another probe, but changing one or more values within the block always resulted in the inability to initialize the modified probe on an E44XX series power meter. Of course, HPAK uses an external program capable of calculating the checksum when they calibrate a sensor upon request and write the complete block, even with an E44XX power meter. Does anyone know the solution for calculating the checksum?
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Re: Off Topic - Looking for assistance with power sensors
Hello Mike,
You need to use some power meter GPIB commands to write/update the sensor EEPROM. It is not only the calibration table coefficients to update but also the temperature compensation table.
I only played with Agilent EPM and Gigatronics power meters to do this but from what I saw in other docs on the internet you have the exact same principle for Boonton and R&S power meters.
I recommend you download the initial/old table and check how it is done and after send new table. I used a text file to read the new cal table and write it to the sensor.
I did this in a semi automated way because I only had 2 sensors to update and it was interesting to try it. For Gigatronics it was not even needed a script because you can update the values on the power meter itself.
I guess you need a fully automated procedure to integrate it in your VeeCal software?
Regards,
Razvan
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On 21/05/2025 19:23, VeeCal via groups.io wrote: Hello again,
I am hoping to find someone here who has done some work with the E44XX series of power sensors - specifically validating and recording the new cal factors to the EEPROM. Likewise for Gigatronics, Anritsu, and Rohde Schwarz. I have done the procedures in the past for the 848X series but this new one is outside of my comfort zone.
With respect, Mike
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Re: BNC that does not have the bayonet lugs
This version of BNC is commonly used in avionics: Radios, Transponders and the like.? The RF unit slides into a housing (tray); The (modified BNC Female) coax connector on the RF unit makes contact into the (modified) BNC male connector on the tray?? Installation is probably a lot simpler than it would be if conventional BNCs were used. All other connections (dc / control/ audio ect) are catered for by multi-pin connectors. (the plug on the RF unit and the socket on the tray. Similar the that mentioned by Wilko Bulte.
Cliff
On Wed, May 21, 2025 at 6:31?PM Robert G8RPI via <robert8rpi= [email protected]> wrote: It would help if you told us what it is on.
It does sound like the BWD powerscope connector. They will take a BNC but it won't lock on.
Robert
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Re: HP8757A Display Problem (Scalar Network Analyzer)
Congratulations!
?
Really glad to hear you located the issue, and it was in the general area we were
discussing.
?
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Off Topic - Looking for assistance with power sensors
Hello again,
I am hoping to find someone here who has done some work with the E44XX series of power sensors - specifically validating and recording the new cal factors to the EEPROM. Likewise for Gigatronics, Anritsu, and Rohde Schwarz. I have done the procedures in the past for the 848X series but this new one is outside of my comfort zone.
With respect, Mike
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Re: BNC that does not have the bayonet lugs
It would help if you told us what it is on.
It does sound like the BWD powerscope connector. They will take a BNC but it won't lock on.
Robert
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Re: HP 334A distortion analyser problem
On Tue, May 20, 2025 at 10:25 AM, Goran Parezanovic wrote:
I applied "supper cold" spray ( -20 deg)to each transistor in the measuring circuit ( Q5 to Q9) but the voltmeter works fine, stays at zero.?
?
I think it's more likely that the problem is one or more electrolytic capacitors which often tend to be "leaky" when they are first charged up. This will go away after a bit of time.? If the required warmup time is short enough for you to tolerate it, just leave it as is. If it's long enough to be annoying, you can try walking thru the circuit, grounding things that won't mind being grounded, until you get to the point where the problem no longer occurs.
?
If you ground a point and find that the meter now stays at zero even when cold, you know that the problem is not after the stage you grounded, but it might be IN the stage you just grounded.
?
If the circuit path is long, the best way to do this is a binary search, where you start in the middle, dividing it in half, then proceed into quarters, etc. Eventually you'll narrow it down to one section of the circuit, where you'll have to decide which element is the problem.
?
--
Jim Adney
Madison, WI USA
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Re: HP 334A distortion analyser problem
In message < [email protected]>, Goran Parezanovic via groups.io <GParezanovic@...> writes Thank you for the input, you gave me new perspective. I was focused
on the metering circuit, and when I applied freeze spray to the
transistors in power supply, I found the culprit on second
transistor I tried. Confirmed twice, now to find the replacement !
_._,_._,_ Result then!, but do make sure you change the capacities in the power supply especially the main smoothing ones. I did this with my 339A and the figures for distortion residuals improved quite a bit, ripple on the supply rails.. -- Tony Sayer
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I tried to start the automatic calibration routine (Shift W): the photos show the results obtained... I don't understand what "Recall: reg 7" means.
..  
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Re: HP 334A distortion analyser problem
Thank you for the input, you gave me new perspective. I was focused on the metering circuit, and when I applied freeze spray to the transistors in power supply, I found the culprit on second transistor I tried. Confirmed twice, now to find the replacement !
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Re: how to convert HP83711B to 83712B!
Hi folks,
?
I have uploaded my 837xx EEPROM manipulation software.
I have also uploaded a ducument how I did an amplitude calibration of my HP83732A.
Both can be found here:
?
Tom
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Re: BNC that does not have the bayonet lugs
Condor mobile 2-way VHF/UHF radios had those "no lock" connectors in panel mount versions. Used in car mounts, the radio was on slide rails allowing easy removal/installation.
In the Netherlands commonly found on ham flea markets.
Wilko
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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
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Re: BNC that does not have the bayonet lugs
How about a Push-On BNC connector
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
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Re: BNC that does not have the bayonet lugs
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 ?
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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.
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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
toggle quoted message
Show quoted text
-----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
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Philip Freidin
VeeCal
Paul Bicknell