Re: Connector identification
Hi Gary,
I did quite a bit search before posting, couldn't find anything similar (perhaps used the wrong keywords) at Digikey, Mouser, Hirose, I-Pex, or Google search for miniature coax connectors.?
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I was hoping it is a common connector and easily recognizable by someone who used such connectors. It is used on motherboard of HP53131A (stuffed when HS timebase option is used) and HS timebase boards.?
Ozan
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On Mon, Nov 18, 2024 at 07:25 PM, Gary Hitchner wrote:
It was suggested it may be a reverse.? There are variations of these small SM connectors, you may have to general search other than DK to find the correct connector.
When we used them on a project we did find SMA adapters and small test cables to SMA, etc.
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Gary
WA2OMY
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Thank you for the reply. U.fl connectors I can find at Digikey has 2mm diameter like this one:
Also in U.fl connectors cable side seems to slide over the PCB connector outer ring. In this HP connector cable side slides inside the outer ring of the SMD connector.?
On Mon, Nov 18, 2024 at 06:18 PM, Gary Hitchner wrote:
Yes, I think it¡¯s a U.Fl, used on many GPS receive engines, there are variations, but I think 2.4 MM was common.
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You can get adapters and cables for these if necessary.? Don¡¯t mate de-mate often, not very robust, can damage easily.
Gary
WA2OMT
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Does anyone recognize what kind of a connector is J2? I also attached picture of the cable it mates to. This connector is on an HP 53131A HS oven option so somewhat relevant to the group. The dimensions are within ~ +/-0.1mm.?
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Re: Connector identification
It was suggested it may be a reverse.? There are variations of these small SM connectors, you may have to general search other than DK to find the correct connector. When we used them on a project we did find SMA adapters and small test cables to SMA, etc. ? Gary WA2OMY
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From: [email protected] <[email protected]> On Behalf Of Ozan
Sent: Monday, November 18, 2024 9:35 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] Connector identification? Thank you for the reply. U.fl connectors I can find at Digikey has 2mm diameter like this one: Also in U.fl connectors cable side seems to slide over the PCB connector outer ring. In this HP connector cable side slides inside the outer ring of the SMD connector.? On Mon, Nov 18, 2024 at 06:18 PM, Gary Hitchner wrote: Yes, I think it¡¯s a U.Fl, used on many GPS receive engines, there are variations, but I think 2.4 MM was common. ? You can get adapters and cables for these if necessary.? Don¡¯t mate de-mate often, not very robust, can damage easily. Gary WA2OMT ? ? Does anyone recognize what kind of a connector is J2? I also attached picture of the cable it mates to. This connector is on an HP 53131A HS oven option so somewhat relevant to the group. The dimensions are within ~ +/-0.1mm.?
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Re: Connector identification
Hi Gary,
Thank you for the reply. U.fl connectors I can find at Digikey has 2mm diameter like this one:
Also in U.fl connectors cable side seems to slide over the PCB connector outer ring. In this HP connector cable side slides inside the outer ring of the SMD connector.?
?
Ozan
?
?
?
On Mon, Nov 18, 2024 at 06:18 PM, Gary Hitchner wrote:
Yes, I think it¡¯s a U.Fl, used on many GPS receive engines, there are variations, but I think 2.4 MM was common.
?
You can get adapters and cables for these if necessary.? Don¡¯t mate de-mate often, not very robust, can damage easily.
Gary
WA2OMT
?
?
Does anyone recognize what kind of a connector is J2? I also attached picture of the cable it mates to. This connector is on an HP 53131A HS oven option so somewhat relevant to the group. The dimensions are within ~ +/-0.1mm.?
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Re: Connector identification
This looks like the polarity is reversed from "normal" U.fl, though.
But you're right about the lack of robustness; the last U.fl connectors that I (hated to) design into a board were rated for 10 (yes ten) mating cycles.
-Dave
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On 11/18/24 21:17, Gary Hitchner via groups.io wrote: Yes, I think it¡¯s a U.Fl, used on many GPS receive engines, there are variations, but I think 2.4 MM was common.
You can get adapters and cables for these if necessary.? Don¡¯t mate de-mate often, not very robust, can damage easily.
Gary
WA2OMT
*From:*[email protected] <[email protected]> *On Behalf Of *Ozan
*Sent:* Monday, November 18, 2024 8:36 PM
*To:* [email protected]
*Subject:* [HP-Agilent-Keysight-equipment] Connector identification
Hello,
Does anyone recognize what kind of a connector is J2? I also attached picture of the cable it mates to. This connector is on an HP 53131A HS oven option so somewhat relevant to the group. The dimensions are within ~ +/-0.1mm.
Thanks,
Ozan
--
Dave McGuire, AK4HZ
New Kensington, PA
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Re: Connector identification
Yes, I think it¡¯s a U.Fl, used on many GPS receive engines, there are variations, but I think 2.4 MM was common. ? You can get adapters and cables for these if necessary.? Don¡¯t mate de-mate often, not very robust, can damage easily. Gary WA2OMT ?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> On Behalf Of Ozan
Sent: Monday, November 18, 2024 8:36 PM
To: [email protected]
Subject: [HP-Agilent-Keysight-equipment] Connector identification? Does anyone recognize what kind of a connector is J2? I also attached picture of the cable it mates to. This connector is on an HP 53131A HS oven option so somewhat relevant to the group. The dimensions are within ~ +/-0.1mm.?
|
Hello,
Does anyone recognize what kind of a connector is J2? I also attached picture of the cable it mates to. This connector is on an HP 53131A HS oven option so somewhat relevant to the group. The dimensions are within ~ +/-0.1mm.?
Thanks,
Ozan
?
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Re: HP8753E -08753-60146 Intermittant source issue (low power, about 50 dB down, but sometimes OK)
Thank you Marcus, Matt, and Ed,
You were all right - it was indeed the attenuator.? I swapped it out for a good one for now.? I'm going to have to take apart that old one (33321Q) one of these days and see if I can figure out what is wrong with it.
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Thanks again to all!
-scott
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N8973A Firmware Update issue
Dear All,?
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I am struggling to run a firmware update on my N8973A NFA running firmware version A.01.03.?
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According to the Agilent / keysight docs I have prepared six discs, however after cycling power on the NFA obviously does not recognize the "ESALOADR" Tool on disk 1 to start the firmware updater.
The disc is readable by the NFA when using the filemanager.?
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Does anyone have a clue ??
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Thanks and best regards, Olaf, DL8EBL
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Re: Troubleshooting a 8591e with opt 130
Yves,
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adjusting the bandpass while focussing on the 20MHz span around 321.4MHz with max hold worked better. Thanks for the advice.?
For now it seems good enough:
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The new mixer diodes are in so I'll try to get those in later this week. I figured it was good to first do the BP alignment again.?
I plan on using the method you described earlier:
"The method I used:
- I replaced cr1 and cr2
- I close the lid and I test, I see if the signal to the monitor at 0Hz, is lower than ideally, at the first division (upper left, picture 8591 LO leakage).
- If the diodes are not matched well enough, the carrier at 0Hz will exceed the first division at the top of the left screen"?
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I found from earlier bandpass alignment tries that the signal at 0Hz is influenced by the bandpass alignment, that's why I figured it had to be done first.
Currently the "0Hz" peak is at 4.5MHz -11.5dBm for my analyzer with the old diodes. Should I aim for an equivalent signal with the new diodes, or a different level?
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Marco
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Has anyone schematics of the HP85102C or HP85103A IF / Detector, specifically of the following modules:
A20 Sweep ADC ? ? ? ? ?85102C - 85102-60234
A23 Main Phase Lock ?85102C - 85102-60227
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I am looking for a working A22 Module.? It must pass CE-7 and 3-2 tests!
73,
Bill Riches, WA2DVU Cape May, NJ 609 425 8651
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Re: HP8753E -08753-60146 Intermittant source issue (low power, about 50 dB down, but sometimes OK)
Hi again,
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now I've read the original post thoroughly and have some comments and questions.
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Re bullet 1
So you are saying that you experience phase lock loss issues(red error message on the screen)?
Given the symptoms you describe I assume that that is what you mean.
Or is it the other way around, you do not have any phase lock issues?
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Re bullet 5
I think 3dBm directly at YIG output sounds too low, it ought to be over 10dBm. This goes for both fixed 3.8GHz YIG LO and the 3-6.8GHz YigTunedOscillator.
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I suspect that you have an issue with the mixer/amplifier/ALC-control module in the A3 source module, that might cause the ALC to drive the amplifier too hard due to the low YIG output.
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I would disconnect the YTO and test it separately,? search the file area for "8753 EYO" and "EYO J9" and you will find how to hook it up. Sweep it from around 60-160mA (or what is needed to cover the frequency range) on the main coil, put the SA on max hold. Also test the YIG LO.
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Best regards
Marcus
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Re: HP8753E -08753-60146 Intermittant source issue (low power, about 50 dB down, but sometimes OK)
Hi all,
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the attenuator can be exercised with the Operator test for port 1 & 2 (i.e. test 21 & 22).
All you need is to connect a short the port being tested. It should be enough to test one port in this case.
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Best regards
Marcus
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10MHz input board for Agilent 33220A/33250A
Dear friends,
I am in the process of cleaning and tidying up my office.
I found two remaining plug&play modules for the 33220A/332250A external 10MHz reference input.
Board design was based on a original Agilent 33220-80001 board but slightly modified.
Module have only 10MHZ BNC input connector, NO loop-back output!
Input AC coupled, 50ohm (<-20dB S11), DC "isolated" from instrument housing (1Mohm)
Input sensitivity better than -13dBm, input level for optimal jitter/phase noise 0 to 20dBm.
Asking 75 USD/EUR each with shipment within EU.
BTW, i don't have a nut for the BNC connector!
Milan
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Re: HP8753E -08753-60146 Intermittant source issue (low power, about 50 dB down, but sometimes OK)
Is there a band switching coaxial relay in there? I assume it has a high (fundamental) and a low (down-converted) band that are switched by relays or PINs. I don't have any 8753 stuff, but have had problems with the coaxial relays in SAs. Like Matt said check the attenuator - the mechanical contacts are the weak link. Likewise, any relays if present.
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Ed
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Re: HP8753E -08753-60146 Intermittant source issue (low power, about 50 dB down, but sometimes OK)
If I remember correctly, the last time I worked on my 8753D, I also had to give some love to the step attenuator.? You might want to scrutinize that some.
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Locked
Re: Wandel & Goltermann DA-30C software..
Thank you so much for the reply. I agree with Dale, what an awesome write up.
Unfortunately, I no longer have the old HDD at all. I did have it reading the platters at one point. it sounds like it was the exact same issue that you had where the arm would get stuck. but after running it up manually and while I was mid making an image the drive completely gave up.
No matter what I did I could not get the drive to read again, and it then developed issues detecting at all.
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Just a FYI for anyone having issues with the FDD, on boot you could hear it trying to start but nothing would be detected. it ended up being the surface mount electrolytic capacitor in the FDD (There is only one) was completely out of spec. Next time I have it open I will take some photos.
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Thanks again
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Allan
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Re: Project: S-Parameter test set for a 3577A...
I have sold my 3577A and still have the original S parameters test set, 35677A, rack mount with type N connectors. It Worked fine over full 3577A frequency range 100k....200 MHz
Offer for sale or swap if anyone is interested, located in USA, California.
Jon
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Re: Project: S-Parameter test set for a 3577A...
Hi,
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(+) and (-) 12V external PSU. I am using SOT-89 SMD regulators in order to have +/- 5V for the OPAmps.
I guess << than 100mA.
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I will make some corrections to the schematic/BOM and then upload the design somewhere.
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Ulf
SM6GXV
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Re: Project: S-Parameter test set for a 3577A...
Hi,
Very interesting and of course very interested by the schematic and the parts list, even for the IN/OUT connectors. Is the analyzer providing the DC supply?
Dan.
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Dave McGuire
Bill Riches
Froggie the Gremlin