Keyboard Shortcuts
ctrl + shift + ? :
Show all keyboard shortcuts
ctrl + g :
Navigate to a group
ctrl + shift + f :
Find
ctrl + / :
Quick actions
esc to dismiss
Likes
Search
Re: Replacement for 08565-60084 attenuator in HP 8565A...
|
Amos; You may learn a lot by working on this project, but the knowledge and results may not be what you expected. I've had to abandon similar projects when I replaced one suspect part only to find out there was another problem revealed by the replacement. When you get to the point where a part or assembly isn't available at a reasonable price, or time-frame, where do you go?
toggle quoted message
Show quoted text
The 8656A represents the state of the art, at that time, and relies on a lot of specialized components working reliably together. HP had a real advantage because they designed and built a unique RF attenuator. They were so good that many were sold to other companies to use in their products. My Gigatronics model 600 signal generator (10 to 8000 MHz) uses a special HP programmable attenuator, and is a major factor in it's success. Stuart K6YAZ Los Angeles, California -----Original Message-----
From: Amos Ku <amosku@...> To: hp_agilent_equipment@... <hp_agilent_equipment@...> Sent: Wed, Aug 31, 2011 12:36 pm Subject: Re: [hp_agilent_equipment] Replacement for 08565-60084 attenuator in HP 8565A... Stuart, Good reasoning. This is my dilemma: 1. To get the system up and working by any condition, 2. Or spend more money to get the complete system. Unless I can run into someone sells cheap on ebay, I may have to get stuck with this attenuator if I am choosing option 2. Amos ________________________________ From: "stuartl73@..." <stuartl73@...> To: hp_agilent_equipment@... Sent: Wednesday, August 31, 2011 12:08 PM Subject: Re: [hp_agilent_equipment] Replacement for 08565-60084 attenuator in HP 8565A... Amos, what you are dealing with is an attenuator specifically made for that one instrument. They are in short supply and are crucial for the analyzer to work properly and to display the actual input level on both the screen and readout LED. Anything but the proper part will degrade the instrument, and possibly create a "Frankenstein's monster", with outboard "fixes". I hope you realize that you are involved in a possibly very expensive and time consuming project; and may have to settle for "good enough" rather than a 100% reliable, accurate instrument. Stuart -----Original Message----- From: Amos Ku <amosku@...> To: hp_agilent_equipment@... <hp_agilent_equipment@...> Sent: Wed, Aug 31, 2011 11:24 am Subject: Re: [hp_agilent_equipment] Replacement for 08565-60084 attenuator in HP 8565A... Will, Yeah. I have thought about this option too. But that means I have to give up the ability to internally choose attenuation. Right now, I am facing the issue of choosing the cable that go between the RF connector and the coax switch (K2). No experience on choosing or specifying one before..... Amos ________________________________ From: "w0eom@..." <w0eom@...> To: hp_agilent_equipment@... Sent: Wednesday, August 31, 2011 8:50 AM Subject: Re: [hp_agilent_equipment] Replacement for 08565-60084 attenuator in HP 8565A... Amos - you can use an external atten. to keep the input signal below +20 dbm. Will In a message dated 8/31/2011 1:06:30 A.M. Pacific Daylight Time, amosku@... writes: Hi all, With help from friends in this group, I have found the schematics in the manual, and I also identified the five missing parts in the HP 8565A that I cheaply bought from ebay. Now, I found it difficult to find a cheap source for 08565-60084 attenuator. Does any one know the replacement part for 08565-60084 (A34, RF attenuator) in HP 8565A? It does not seem to be easy to obtain this attenuator ($400). I wonder if anyone knows any information about this attenuator. If obtaining one is difficult, what options do I have? Also, I wonder if this attenuator is really needed to make the system work. Thanks in advance. Amos [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] |
to navigate to use esc to dismiss