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opertunity to have uWaveEngineer1968 test his gear hobber - 8640B for $1
pdxoregonpete
Any in or near Reno ? there is a 8640B in really bad shape
on E-B*** starting bid $1, I'd toss in a couple $'s, if someone got it and didn't have to pay shipping, and get a good set of drawings for the gears, and let Lothar have them to see what it would take to make a few sets. -pete |
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mechanical parts
microwaveengineer1968
Well i always believe in sharing when i find something good, usually im
not for promoting any company on a newsgroup but im using this one for quite awhile and i think some of you guys may find it usefull ! In my line of work you require a lot of mechanical parts mostly housings, horn antennas or filters all of them requiring a fair ammount of machining mostly lathe and milling, altough i like pittling around with machines -and im quite profficient in using them- it is sometimes too time consuming or your home machines dont have the accuracy. There is a website i discovered called MFG.COM basically you upload a drawing and the qty desired and then shops from around the country bid on the job, you can then select the cheapest one and award the job, they have a feedback system similar to ebay so you can look at what other people had to say about the guy I know this is not testequipment related but i think its a good website, i got most of my housings machined for $10 or less, the registration is free. |
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Re: 8510B software update
lothar baier
the tape is matched to the serial# of the unit, you can swap the board but not the tape, you would have to find the area where the serial# information resides on the board and then change the serial# to match the other card , essentially "clone" the card, then it would work , usually HP put this info in a EEPROM usually a XICOR part, but i dont know what part they used on the 8510B
jfphp <jfphp@...> wrote: I have recently got a 8510B software 4.0 with option time domain and would like to upgrade (the display)to a more recent version. A friend has the latest, 6.35 with the same option : we have swapped the EEPROM boards and, no problem, I am running his latest version : conclusion, the CPU and ROM boards are not matched. He downloaded his latest op system on 2 cassettes but impossible to download the cassettes to upgrade my display. What is the trick ? All the CPU and EEPROM boards have some PAL and EPROM with exactly the same part number.The brute solution would be to desolder all the EEPROMS (2X2X9 chips) and copy each separately, a lot of pins and time consuming, perhaps with a flame thrower but I am not sure if the friend will agree...... Is there a more intelligent solution to overcome the protection ? Thanks __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around |
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8510B software update
I have recently got a 8510B software 4.0 with option time domain and
would like to upgrade (the display)to a more recent version. A friend has the latest, 6.35 with the same option : we have swapped the EEPROM boards and, no problem, I am running his latest version : conclusion, the CPU and ROM boards are not matched. He downloaded his latest op system on 2 cassettes but impossible to download the cassettes to upgrade my display. What is the trick ? All the CPU and EEPROM boards have some PAL and EPROM with exactly the same part number.The brute solution would be to desolder all the EEPROMS (2X2X9 chips) and copy each separately, a lot of pins and time consuming, perhaps with a flame thrower but I am not sure if the friend will agree...... Is there a more intelligent solution to overcome the protection ? Thanks |
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Agilent undocumented parts
microwaveengineer1968
First of - because you dont see it in the manual doesnt mean its not
available ! If you are looking for a part forget Parts ID, they usually are no help Your first stop always should be the Agilent Parts website, enter the model# and it pulls up all parts assigned to this product, you will find that alot of parts listed there are not found in the manual, this also goes for manuals ! Some of the parts have pictures which will help you to indentify them. Knowing the HP parts systematic also helps, usually parts start with the model number and some zeros, Parts for a HP436 for example would start 00436-xxxxx parts for a 8360 sweeper: 08360-xxxx for a 70910 : 70910-xxxxx, thin film circuits and RF Assemblies start with 5086-xxx or 5087-xxxx CRT usually start with 2090-xxx Another nice feature is a button that shows you which other products use the part, that makes it easier to find a sacrificial lamb for parts, Agilent was strong in design reuse, so alot of parts you find in different products. Example: the display used in 8753A/B units also was used in the 8757A , the display of the 3577 was used in the 4145 and 8756 and the Color display used in the 8510C also fits the 8753C or D and the 70004A there was a time when 70004A were dirt cheap when you could buy a 70004A for $300 and fix a broken 8753C or D by using this display, also look at the parts especially displays and LCD as most of them are not made by agilent and sometimes still have the OEM part# on them ! the displays on the 8590 for example was made by omnivision and you can buy it from them for a fraction of the cost agilent charges for a part, the mixer in the 11793A was made by REMEC or RHG |
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HP Parts convolute
microwaveengineer1968
Hi
awhile ago i had posted a lot of HP Parts to give away, mostly HP5345 and 8620C stuff, i commited those to a gentleman in GB with a shipping adress in OH, unfortunatly my PC played a trick and wiped out all my emails so i dont have the adress anymore, so would you please email me again with your shipping adress ? |
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ESR Meter substitute circuit for MAX038
Here are details on a square wave generator circuit to replace the
MAX038. Using the values shown in the circuit diagram 100KHz results. Some deviation from this frequency will not affect the performance of the ESR Meter. Notes on the substitute circuit: Circuit Diagram: Scope display of waveform: |
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More useful and little known agilent part numbers !
microwaveengineer1968
Back on popular demand here are a few more part numbers !
1GT1-2674 30dB 30W Attenuator cartridge for 8498A $96 1GT1-2788 5dB Attenuator Pad for 8662/8663/8664/8665 $41 1GT1-2865 10dB 26GHz pad for 8340B/8515A $28 1GT1-2866 30dB pads for 8340B $34 1GT1-2881 DC Block used in 70904A and others $6 1GT1-2902 5dB pad used in 70904A and others $18 1GT1-3235 10dB pad used in new style attenuators and 83650 $49 1GT1-3237 20dB Pad new style $48 1GT1-3587 30dB new style $50 1GT1-3737 10dB 26GHz used in 8497K 8495,33321H $18 |
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Re: Cleaning HP 8590 SA series soft keypad contacts ?
lothar baier
i always use isopropilic alcohol for those and never had any problems, use a surgical applicator (normal cottonswabs will leave fuzz) tip it in alcohol and use it to clean the rubber contacts
normally alcohol is gentle enough for the purpose David Woodhead <david_woodhead@...> wrote: Some of the buttons on my 8592 spectrum analyzer have become a little intermittent. I have removed the keypad assy and the rubber button assy - I will clean the board with alcahol but I'm not sure what to use on the buttons themselves - these have a conductive rubber pad that contacts the board when th ebutton is pressed. I can clearly see that some sort of light residue has built up on these. Does anyone have experience cleaning these - suggestions what to use to clean the conductive rubber pads? Thanks, David. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around |
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Cleaning HP 8590 SA series soft keypad contacts ?
Some of the buttons on my 8592 spectrum analyzer have become a little intermittent. I have removed the keypad assy and the rubber button assy - I will clean the board with alcahol but I'm not sure what to use on the buttons themselves - these have a conductive rubber pad that contacts the board when th ebutton is pressed. I can clearly see that some sort of light residue has built up on these. Does anyone have experience cleaning these - suggestions what to use to clean the conductive rubber pads?
Thanks, David. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around |
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Re: What are HP 3253A & 3453A SRUs?
Those numbers sound strangely familar.? The 3060, 3062, and 3065 ?board test families had two specialize instruments.? One was?the ASRU (pronounced AS-RU) or Analog Stimulus and Response Unit and the other was the DSRU (pronounced DES-RU) which was the Digital Stimulus and Response Unit.? They were 4 rack unit (7 in.) high with all but the last verson of the ASRU having six terminals on the front label S, I, G, L, A, B.? You won't find either in the T&M catalog.
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For those who knew how to use it, the ASRU was an awesome instrument to behold. Mike -----Original Message-----
From: Pete <peterawson@...> To: hp_agilent_equipment@... Sent: Mon, 5 Nov 2007 5:35 pm Subject: Re: [hp_agilent_equipment] What are HP 3253A & 3453A SRUs? Brooke, I looked up the 3253A a long time ago, so my recollection may be off. The 3253A was a combination of audio (maybe low MHz) sinewave source & phase locked vector voltmeter (high Z). It can operate as a 2-port swept analyzer. I've no idea what the other critter was. Pete Rawson ________________________________________________________________________ Email and AIM finally together. You've gotta check out free AOL Mail! - |
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Re: HP 182T
Hi Pete,
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all noted thanks for the info Mans, 9H1GB On 05/11/2007, Pete <peterawson@...> wrote:
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Re: What are HP 3253A & 3453A SRUs?
Pete
Brooke,
I looked up the 3253A a long time ago, so my recollection may be off. The 3253A was a combination of audio (maybe low MHz) sinewave source & phase locked vector voltmeter (high Z). It can operate as a 2-port swept analyzer. I've no idea what the other critter was. Pete Rawson |
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Re: 419A Chopper Replacement
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-----Original Message-----I don't know the 419A. For what it's worth, my Fluke 895A differential voltmeter had a distorted chopper waveform that was about half normal frequency. Turned out to be a short on one of the power supplies that the chop oscillator drives in addition to the choppers. Dave Wise |
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70000 vs 8566B Part II
pdxoregonpete
I first want to thank all the replies and various views.
First maybe I should have provided more information. My frequency need does not need to go past 2.5 GHz and that is only for the RF portion of what I'm working on which is wireless ZigBee where one of its two RF bands is 2.4 GHz. I'm not in anyway a uWave engineer and don't see needing to measure to 22 GHz. I had originally hoped to hold off getting another SA by for a while by using the one I have now, an HP portable that goes to 1.5 GHz and with a mixer be able to work at 2.4 GHz, but it fails self calibration, hopefully something simple. Now that I know I can get manuals for either, and not needing to goto 22 GHz, I'm leaning toward a 70000 setup. But will always keep my eyes open for a 8566B :) Again thanks for all the replies, information and the "Readers Digest" break down of the 70000 modules. -pete |
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Re: 70000 vs 8566B
Unfortunately, this hits a nerve:
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"Lets face it most home labs dont give a ... about calibrated equipment, adjusments are only to be made if you repair something." Welllllll, that isn't true in my crowd. We'd all like to have NIST traceable gear but as rank amateurs who can afford it? For certain measurements (frequency and time come to mind), you can achieve excellent results at home. But for voltage, current, impedance and various microwave measurements (care to calibrate my loads and shorts?), it's more difficult. Too bad we can't figure out someway to make transportable standards that could be shipped around and recalibrated from time to time. On 11/2/07, lothar baier <microwaveengineer1968@...> wrote:
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