Author Topic: Test Equipment Anonymous (TEA) group therapy thread  (Read 1517710 times)

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Offline Inverted18650

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24200 on: February 02, 2019, 11:41:07 am »
I got a request for more info on the HP8672 Sig Gen so I have to (am going to anyway) pull it back up onto the bench and play with it again. Anyone have an idea of signals I can generate to show it works well or not? DO I need the Spectrum Analuzer to see the signals or a basic scope will do? I have very little idea on how to use this bit of gear.

Online Mr. Scram

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24201 on: February 02, 2019, 11:44:30 am »
I got a request for more info on the HP8672 Sig Gen so I have to (am going to anyway) pull it back up onto the bench and play with it again. Anyone have an idea of signals I can generate to show it works well or not? DO I need the Spectrum Analuzer to see the signals or a basic scope will do? I have very little idea on how to use this bit of gear.
Google image search "HP8672". It's glorious! Just what the TEA crowd needs.
 
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Offline Cubdriver

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24202 on: February 02, 2019, 11:49:07 am »
Wera makes good stuff.  (I like Wiha, too - the yellow nutdriver to the left of the folding pouch is part of a Wiha set).  My PZ1 driver missed the picture as it's in hiding somewhere.

And I happen to like pozidriv screws more than phillips.



-Pat
If it jams, force it.  If it breaks, you needed a new one anyway...
 

Offline Cubdriver

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24203 on: February 02, 2019, 11:52:27 am »
And as for the Hummer...



-Pat
If it jams, force it.  If it breaks, you needed a new one anyway...
 
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Offline cdev

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24204 on: February 02, 2019, 11:53:48 am »
That WAS the plan. She wanted to retire this month. It isn't going to happen for another 3 years and I'll tell you why. It's due to greed. She's currently 62. She's severely diabetic and she requires injections of fast acting insulin and slow acting insulin. As may or may not know in the last few years the 2 drug companies that make insulin have decided to jack up the price of insulin to unreasonable levels. (Actually criminal levels IMHO) If she were to retire now her retirement medical would not cover that cost. (So much for "Obamacare". What a joke) She estimated she'd be bankrupt in a few months. So she has to wait until age 65 when Medicare kicks in and will pay for it.
Now doesn't that suck?   
Yep, that sucks alright, but wasn't Obamacare torpedoed by resident chump?

Read the fine print!
https://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.405.5725 <<<see page 368 - this applies to the UK too.
"What the large print giveth, the small print taketh away."
 

Offline Inverted18650

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24205 on: February 02, 2019, 11:55:24 am »
Clearly meant for H2 & H3 owners.

Online Mr. Scram

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24206 on: February 02, 2019, 12:00:08 pm »
What the preferred fastener if you have the choice? Torx?
 

Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24207 on: February 02, 2019, 12:29:07 pm »
That WAS the plan. She wanted to retire this month. It isn't going to happen for another 3 years and I'll tell you why. It's due to greed. She's currently 62. She's severely diabetic and she requires injections of fast acting insulin and slow acting insulin. As may or may not know in the last few years the 2 drug companies that make insulin have decided to jack up the price of insulin to unreasonable levels. (Actually criminal levels IMHO) If she were to retire now her retirement medical would not cover that cost. (So much for "Obamacare". What a joke) She estimated she'd be bankrupt in a few months. So she has to wait until age 65 when Medicare kicks in and will pay for it.
Now doesn't that suck?   
Yep, that sucks alright, but wasn't Obamacare torpedoed by resident chump?

Read the fine print!
https://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.405.5725 <<<see page 368 - this applies to the UK too.

I read that and I must be a totally ignorant sod because I have no clue as to what in the holy hell they are talking about.  :-//
An old gray beard with an attitude.
 

Offline Inverted18650

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24208 on: February 02, 2019, 12:29:42 pm »
What the preferred fastener if you have the choice? Torx?

Rivots.

So I went through all the google pics of the 8672A and there is nothing but front-end shots and the occasional tear down, does that mean you want a tear down?
« Last Edit: February 02, 2019, 12:31:20 pm by Inverted18650 »
 

Offline 0culus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24209 on: February 02, 2019, 12:56:49 pm »
Took apart the 8568B RF section front panel to get to the attenuator. Remarkably easy, actually, except that when I reassembled it I forgot to plug in the little plug that powers and controls the attenuator.  :palm: Cue unstacking the display and taking it down once again to open it up...I got my workout tonight!  :-DD

Anyway, I took apart the attenuator and examined it for signs of a major power excursion and could find none. I think it may in fact just be worn out and the contacts are not making good contact with the tiny resistive pads. Perhaps one of the solenoids is weak. A +15 dBm signal is capacitively coupling approximately -61 dBm through the attenuator from 0-30 dBm attenuation, and correct amplitude from 40-70 dBm attenuation.

Since I have no way to repair such a precision device, I am definitely going to need a new attenuator.

 
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Online Mr. Scram

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24210 on: February 02, 2019, 01:05:15 pm »
Rivots.

So I went through all the google pics of the 8672A and there is nothing but front-end shots and the occasional tear down, does that mean you want a tear down?
Well yes, but that's not because of the pictures but because tear downs are always a good thing.

Note that "HP8672" and "8672A" yield different results. ;D
 

Offline Inverted18650

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24211 on: February 02, 2019, 01:10:28 pm »
 :palm:
 
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Offline Inverted18650

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24212 on: February 02, 2019, 01:13:04 pm »
Took apart the 8568B RF section front panel to get to the attenuator. Remarkably easy, actually, except that when I reassembled it I forgot to plug in the little plug that powers and controls the attenuator.  :palm: Cue unstacking the display and taking it down once again to open it up...I got my workout tonight!  :-DD

Anyway, I took apart the attenuator and examined it for signs of a major power excursion and could find none. I think it may in fact just be worn out and the contacts are not making good contact with the tiny resistive pads. Perhaps one of the solenoids is weak. A +15 dBm signal is capacitively coupling approximately -61 dBm through the attenuator from 0-30 dBm attenuation, and correct amplitude from 40-70 dBm attenuation.

Since I have no way to repair such a precision device, I am definitely going to need a new attenuator.

SOOO pretty

***EDIT: I just checked my eBay page and I only have (66) people watching to see what I post...you all better get there! because if I can't leave the house this weekend due to my truck, I'll post everything left in a marathon of "clean, test, photo, edit, post"...and sometime I get nutty and have fun, at my own expense!
« Last Edit: February 02, 2019, 01:40:48 pm by Inverted18650 »
 

Online Mr. Scram

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24213 on: February 02, 2019, 01:14:44 pm »
:palm:
There's nothing wrong with looking pretty.
 

Online mnementh

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24214 on: February 02, 2019, 01:22:06 pm »
I lost my mind when I learned the difference between how a 6pt socket fits a normal bolt vs. the "standard 12pts that are commonly sold and used.
I lost my mind waaaaay before that...  :-DD

Wera makes good stuff.  (I like Wiha, too - the yellow nutdriver to the left of the folding pouch is part of a Wiha set).  My PZ1 driver missed the picture as it's in hiding somewhere.

  And I happen to like pozidriv screws more than phillips.

-Pat
Yes, but you're a well-know wingnut. ;) And we love ya BECAUSE of it, not in spite of it.  :-DD


   And as for the Hummer...

-Pat
I'll be getting a new Pikachu on Sunday; but this one still has some humm left in it. Should I mail it over?  :-DD

Took apart the 8568B RF section front panel to get to the attenuator. Remarkably easy, actually, except that when I reassembled it I forgot to plug in the little plug that powers and controls the attenuator.  :palm: Cue unstacking the display and taking it down once again to open it up...I got my workout tonight!  :-DD

Anyway, I took apart the attenuator and examined it for signs of a major power excursion and could find none. I think it may in fact just be worn out and the contacts are not making good contact with the tiny resistive pads. Perhaps one of the solenoids is weak. A +15 dBm signal is capacitively coupling approximately -61 dBm through the attenuator from 0-30 dBm attenuation, and correct amplitude from 40-70 dBm attenuation.

Since I have no way to repair such a precision device, I am definitely going to need a new attenuator.

I'm sorry for your pain... but if its any consolation, you'll get loads of thank-yous for posting that; to us it's the Miss January centerfold.  :-DD

mnem
Take it off! take it ALL off!!!
« Last Edit: February 02, 2019, 01:24:29 pm by mnementh »
 

Offline 0culus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24215 on: February 02, 2019, 01:36:46 pm »
Took apart the 8568B RF section front panel to get to the attenuator. Remarkably easy, actually, except that when I reassembled it I forgot to plug in the little plug that powers and controls the attenuator.  :palm: Cue unstacking the display and taking it down once again to open it up...I got my workout tonight!  :-DD

Anyway, I took apart the attenuator and examined it for signs of a major power excursion and could find none. I think it may in fact just be worn out and the contacts are not making good contact with the tiny resistive pads. Perhaps one of the solenoids is weak. A +15 dBm signal is capacitively coupling approximately -61 dBm through the attenuator from 0-30 dBm attenuation, and correct amplitude from 40-70 dBm attenuation.

Since I have no way to repair such a precision device, I am definitely going to need a new attenuator.

SOOO pretty

These attenuators are constructed like Swiss watches. Amazingly precise, with lots of tiny and fragile parts.
 

Offline 0culus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24216 on: February 02, 2019, 01:43:24 pm »
snip

Took apart the 8568B RF section front panel to get to the attenuator. Remarkably easy, actually, except that when I reassembled it I forgot to plug in the little plug that powers and controls the attenuator.  :palm: Cue unstacking the display and taking it down once again to open it up...I got my workout tonight!  :-DD

Anyway, I took apart the attenuator and examined it for signs of a major power excursion and could find none. I think it may in fact just be worn out and the contacts are not making good contact with the tiny resistive pads. Perhaps one of the solenoids is weak. A +15 dBm signal is capacitively coupling approximately -61 dBm through the attenuator from 0-30 dBm attenuation, and correct amplitude from 40-70 dBm attenuation.

Since I have no way to repair such a precision device, I am definitely going to need a new attenuator.

I'm sorry for your pain... but if its any consolation, you'll get loads of thank-yous for posting that; to us it's the Miss January centerfold.  :-DD

mnem
Take it off! take it ALL off!!!

No pain no gain!  :-DD
 

Offline Neomys Sapiens

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24217 on: February 02, 2019, 02:02:28 pm »
I'll be getting a new Pikachu on Sunday; but this one still has some humm left in it. Should I mail it over?  :-DD

Ok, that was almost precient. On my way home today I passed a rotund compact car, which was bright yellow with a big midline black stripe from the hood to the haulage. I thought 'eeew Pikachu!' and now this!

As for the hummer.....

there is only ONE way to greet a HUMVEE driver when he is stuck in deep mud.
Drive up beside him, bend down to him, and ask politely whether he wants a tow-out or a load-up,
then break into a little chant:
U NI MOG! U NI MOG! U NI MOG! :D
 

Offline Inverted18650

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24218 on: February 02, 2019, 02:04:48 pm »
Anyone else seen or have one of these. I picked it up for 0.25 at a local rummage store and I have grown to love it. The receiver is universal for all bit and the (it) also ratchets, or can be set to the center for additional toque. I can store tips inside the handle as well as the three traditional Phillips and Flathead sizes.

While I kind of like my IT, I absolutely must buy some professional EE hand tools.

Online Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24219 on: February 02, 2019, 02:05:11 pm »
@mnem, its strange but of all the fucked up screw heads I come across it's 9 times out of 10 going to be the philips where some numpty has gone at it with power tool on the wrong torque setting and the driver has been forced out of the indentation for it ripped the metal out of the head so the only option I have to gaining access to the insides of the gear is to drill out the remains of the head so I gain the access required  :palm: I find pozi drive and torx are that much more resistant in that dept.  :popcorn:
Who let Murphy in?
 

Offline 0culus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24220 on: February 02, 2019, 02:14:15 pm »
IMO, Torx > hex > pozi > phillips;  and flathead can go die in a fire. I don't even mind tamper resistant screws because I have all the right tools for those.  :-+
« Last Edit: February 02, 2019, 02:23:04 pm by 0culus »
 

Online mnementh

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24221 on: February 02, 2019, 02:15:25 pm »
@mnem, its strange but of all the fucked up screw heads I come across it's 9 times out of 10 going to be the philips where some numpty has gone at it with power tool on the wrong torque setting and the driver has been forced out of the indentation for it ripped the metal out of the head so the only option I have to gaining access to the insides of the gear is to drill out the remains of the head so I gain the access required  :palm: I find pozi drive and torx are that much more resistant in that dept.  :popcorn:

That's because your "Philips" is either not manufactured to standard ( SHOCKING!!!  :-DD ) of hardened steel, or it is in fact a PoziDrive that some mouth-breather stripped out with a Philips screwdriver.

If it is on Japanese gear (and motorcycles and automobiles) it is most likely because the same troglodyte (or his/her cousin) tried to use a Philips driver on a JIS screw; yet ANOTHER soft-steel Philips-oid fastener designed of in the same manner and for the same reasons as the Philips/PoziDrive debacle.   :palm:

mnem
I'm looking at YOU, Yamaha!!!  >:(
« Last Edit: February 02, 2019, 02:21:35 pm by mnementh »
 

Offline Neomys Sapiens

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24222 on: February 02, 2019, 02:24:19 pm »
Don't forget the Reed&Prince!
 

Offline Inverted18650

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24223 on: February 02, 2019, 02:24:59 pm »
Just the tips. ;)
 
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Offline 0culus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #24224 on: February 02, 2019, 02:27:30 pm »
I also have a set that has the "special" screwheads that Apple invented to keep people out of their hardware...just in case.  >:D
 


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