Products > Test Equipment
HP3577A 5Hz-200Mhz VNA Teardown
sixtimesseven:
Yeah so much better than the CRT!
I have to say the Newscope Displays are top notch, very nice blacks. Much better than my 20 Dollar Aliexpress LCD I hacked on to my 8753 ...
But dam the kits are expensive!
Berni:
Yeah the price of these Newscope displays is the reason i haven't put one of them in my HP 8566B. They look great, but the price of it is hard to justify when my CRT still works fine.
precaud:
Just a general note to 3577A owners.
Should you ever want to go through the adjustments procedures and calibrate your unit (especially the input boards), use the procedures given in the 3577B service manual PDF. The adjustments in the 3577A manuals, both printed and PDF, are incomplete and in the wrong order!
This is true of all revisions of the 3577A service manual.
rx8pilot:
--- Quote from: precaud on June 14, 2019, 03:53:46 pm ---Just a general note to 3577A owners.
Should you ever want to go through the adjustments procedures and calibrate your unit (especially the input boards), use the procedures given in the 3577B service manual PDF. The adjustments in the 3577A manuals, both printed and PDF, are incomplete and in the wrong order!
This is true of all revisions of the 3577A service manual.
--- End quote ---
This is an awesome addition to this thread. As an owner of an A model - I think this saved me a pile of time. Thanks.
Calvin:
Hi,
now that my 3577A is working again, I´m looking for an affordable S-Parameter Test Set or an alternative, since the prices + shipping of these sets are higher than what I paid for the VNA :palm:
Just a Q regarding the connectors of the subassemblies in the 35677 S-Parameter Test Sets.
It looks as if the connectors to and from the coaxial relay (33311B) and the directional Bridges (3577-66502) are all of the SMA female type.
The ´Port1´ and ´Port2´ outputs of the two bridges are of N-type but it appears to me that rather they feature SMAs with an SMA-to-N adapter screwed on.
Is that true?
I assume one doesn´t need additional D-Blocks when a (original) 35677 is connected to the VNA? Are those only required for useage of the VNA alone?
As alternative DIY-Setup ... would those cheap chinese/ucrainian 0.1-3000MHz bridges be suitable (with their Ref-otputs terminated into 50R)?
regards
Calvin
btw. found prices in the 1990 HP catalog - 3577A: 25,570$, 35677A: 4,100$ - which would be ~52,000$ and ~8,400$ respectively. What a whopper :popcorn:
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