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Date
Re: Troubleshooting a 8591e with opt 130
Marco, OK, I didn't know that Spectrum was full span. So 1800MHz/400points = 4.5MHz, but it's rounded to an integer value. If the marker moves from one point to another, there will be 4 to 5 MHz
By Yves Tardif · #148533 ·
Re: HP 1980B
Hi Brad I did a lot of work on the 1980B.? See?HP 1980B OscilloscopeA bit of a pig to work on, but an interesting bit of history. Regards Steve
By Steve A · #148532 ·
Re: Troubleshooting a 8591e with opt 130
Yves, I actually have a picture from before bandpass alignment: and after alignment: both at 4.5MHz, both at full span though, could that be a resolution error? I turned on the instrument this morning
By Marco · #148531 ·
Re: Troubleshooting a 8591e with opt 130
Hi Marco, Your filter is indeed well aligned now. And the ripple in a 6MHz range will be less than 1dB. The fact that the 0Hz peak is at 4.5MHz is really very strange. The 0 Hz is mainly related to
By Yves Tardif · #148530 ·
Re: HP85102C documentation
No, I haven't seen them. However I'm interested too. I have *3* HP85102c that fail A20 self test. The PCB card serial number have evolved and I think you listed the later versions. Maybe they are
By David Vieira · #148529 ·
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. I
By Ozan · #148528 ·
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
By Gary Hitchner · #148527 ·
Re: Connector identification
Hi Gary, Thank you for the reply. U.fl connectors I can find at Digikey has 2mm diameter like this one: https://www.digikey.com/en/products/detail/te-connectivity-linx/CONMHF1-SMD-T/15293384 Also in
By Ozan · #148526 ·
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
By Dave McGuire · #148525 ·
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,
By Gary Hitchner · #148524 ·
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
By Ozan · #148523 ·
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
By Scott Vance · #148522 ·
N8973A Firmware Update issue
Dear All, I am struggling to run a firmware update on my N8973A NFA running firmware version A.01.03. According to the Agilent / keysight docs I have prepared six discs, however after cycling power on
By DL8EBL · #148521 ·
Re: Troubleshooting a 8591e with opt 130
Yves, 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: The new mixer diodes are in so I'll try
By Marco · #148520 ·
HP85102C documentation
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
By Maarten PA0MHE · #148519 ·
3586 A22
I am looking for a working A22 Module.? It must pass CE-7 and 3-2 tests! 73, Bill Riches, WA2DVUCape May, NJ609 425 8651
By Bill Riches · #148518 ·
Re: HP8753E -08753-60146 Intermittant source issue (low power, about 50 dB down, but sometimes OK)
Hi again, now I've read the original post thoroughly and have some comments and questions. Re bullet 1 So you are saying that you experience phase lock loss issues(red error message on the screen)?
By Marcus Gustafsson · #148517 ·
Re: HP8753E -08753-60146 Intermittant source issue (low power, about 50 dB down, but sometimes OK)
Hi all, 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
By Marcus Gustafsson · #148516 ·
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
By Milan Vasic · #148515 ·
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
By ed breya · #148514 ·