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Re: 8594E input attenuator issue?
Hi, Remember that an attenuator must be terminated in 50 ohms to have the correct attenuation. You could do a simple test with your DMM, with the attenuator assembled (except for the cover over the
By Askild · #121875 ·
Re: 8594E input attenuator issue?
Ozan : These measurements are from input to output. PAD 2 : 81.69 ohm PAD 3 : 98.04 ohm PAD 4 : 51.65 ohm These are from input to ground : PAD 2 : 51.05 ohm PAD 3 : 49.95 ohm PAD 4 : 60.96 Ohm There
By Nicolas Mailloux · #121874 ·
Re: 8594E input attenuator issue?
Both service manual and CLIP show 10dB/20dB/40dB sections. The pads have three terminals, input/output/ground (input/output being symmetric). Ground is connected to the metal frame. ?Are above
By Ozan · #121873 ·
Re: 8566 5.2V supply
The 1854-0441 is NOT a diode. All 1854-.... parts are NPN transistors Cheers! Bruce Quoting RubenRubio <rubenrb2019@...>:
By Bruce · #121872 ·
HP 89441A / 89431A RF Section Help
My 89441A Vector Signal Analyzer has stopped working with its 89431A RF section, with an error message saying the reference oscillator is unlocked.? I have confirmed that there is no signal coming
By Murray Johnson VE3KNO · #121871 ·
Re: 8566 5.2V supply
Thank you!!!
By Francesco Ledda · #121870 ·
Re: 8594E input attenuator issue?
n8zmTWH@...<mailto:n8zmTWH@...> : I do not have/searched the schematics of my particular ATT. I based my assumptions on a previous post from someone that attached schematics.
By Nicolas Mailloux · #121869 ·
Re: 8594E input attenuator issue?
Using the p-p amplitudes shown in the lower left corner of the screen, I calculate 20 dB where you said 40, and 30 dB where you said 50. Are you sure that is a 40 dB section, as that is kind of
By Tom via Metronet · #121868 ·
Re: E5071C the program can't working
Been known to happen.? You have an ENA, but 5 to 10 years ago I worked with a PNA (lucky me) that developed a pathological cal set.? Even "touching" that cal set crashed the Windows operating
By Jim Ford · #121867 ·
Re: 8594E input attenuator issue?
I enabled FFT on my DSO. (It is a Rigol D1052E hacked to 100Mhz) My TF 2015 is old and the maximum dB out I can get is theoretically -1dB (-7dB on the dials and a +6dB boost on CW Mode) First picture
By Nicolas Mailloux · #121866 ·
Re: 8566 5.2V supply
Hello Francesco In my xref lists I cannot found equivalent, so I did some google search about 1854-0404. Mr. Terrell wrote here in this forum: "Michael A. Terrell 25.11.2018 #92882 (
By RubenRubio · #121865 ·
Re: 8594E input attenuator issue?
Nicolas, If your DSO has an FFT function it could help in checking the higher attenuations. --John Gord
By John Gord · #121864 ·
Re: E5071C the program can't working
yes,thanks
By qnhn90@... · #121863 ·
Re: E5071C the program can't working
As Keysight does business all around the world, I expect that their web site will offer both an email and a phone number for you to use from your country to contact a Help Desk, which they call their
By Tom via Metronet · #121862 ·
Re: 8594E input attenuator issue?
Quickly cranking out some numbers, the 20 dB section appears to be working. 20Log(60/6.4) = 19.44.dB. Allowing for a bit of inaccuracy due to using a DSO, that looks OK. 20Log(60/1.6) = 31.38 dB,
By Tom via Metronet · #121861 ·
Re: 8594E input attenuator issue?
------------------ Could you try with higher power input so that you can get more
By Ozan · #121860 ·
Re: E5071C the program can't working
i checking hard disk normal. i'm in Viet Nam
By qnhn90@... · #121859 ·
Re: 8594E input attenuator issue?
Alright, I tried myself with a 3D printed plunger. It's not perfect, I would need to trim a bit on the top because it keeps the blade too low when engaged, but it's doable with time. The broken
By Nicolas Mailloux · #121858 ·
Re: HP35660a service manual, the complete version ?
Much appreciated
By Richard Merifield · #121857 ·
Re: 8594E input attenuator issue?
On Wed, Jan 19, 2022 at 06:19 PM, Ozan wrote: > > On Wed, Jan 19, 2022 at 05:30 PM, <nicolas.mailloux@...> wrote: > >> Ho Ozan, >> I have a signal generator, the lower I can go is 14Mhz. >>
By Ozan · #121856 ·