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Re: DIY: Repair of HP Step Attenuators
All,
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I wonder: I have a sticky microwave relay in an HP 8593A. If the relay has been closed (ie for LOWBAND) for about five minutes and is opened, it won't close again unless it's had a chance to cool down (about 10 minutes at room temp). I can get it to close immediately with freeze-spray. Could this possibly be magnetization? Aside from a sticky relay pivot, how else can such relays fail? Fred --- In hp_agilent_equipment@..., "i5spo" <piero.soldi@...> wrote:
maybe you have one cell stuck, due to magnetization of the small actuator... Can be locked to the ceiling of attenuator case. |
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Re: HP 8551 Spectrum Analyzer FS or trade?
Max - not the 8551. It came with an 851 display on top. you can google
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it. will In a message dated 12/28/2012 2:08:58 P.M. Pacific Standard Time,
max@... writes: Hi Daniel. If I remember correctly, and more and more lately I don't, the 8551 came with different front end modules for different frequency coverage's. What is the frequency range of yours? If it fits my needs I would be willing to pay for professional packing and the shipping charges to get it. Regards. Max. K 4 O DS. Email: _max@... (mailto:max@...) Transistor site _ () Vacuum tube site: _ () Woodworking site _ () Music site: _ () To subscribe to the fun with transistors group send an email to. _funwithtransistors-subscribe@... (mailto:funwithtransistors-subscribe@...) To subscribe to the fun with tubes group send an email to, _funwithtubes-subscribe@... (mailto:funwithtubes-subscribe@...) To subscribe to the fun with wood group send a blank email to _funwithwood-subscribe@... (mailto:funwithwood-subscribe@...) ----- Original Message ----- From: "Daniel Koller" <_kaboomdk@... (mailto:kaboomdk@...) > To: <_hp_agilent_equipment@... (mailto:hp_agilent_equipment@...) > Sent: Friday, December 28, 2012 8:44 AM Subject: Re: [hp_agilent_equipment] HP 8551 Spectrum Analyzer FS or trade? Hi folks, Is there really ZERO interest in an HP 8551 spectrum analyzer? Given that I didn't even get any comments from this usually vocal group, and having found some replies to older posts that went into my spam folder, I figured I'd just ask again (copied below). Perhaps a few more people are back from the holidays as well. Please do let me know if the group consensus is that this thing is really just a useless boat anchor even by vintage instrument standards. Thanks and have a happy new year! Dan ________________________________ From: kaboomdk <_kaboomdk@... (mailto:kaboomdk@...) > To: _hp_agilent_equipment@... (mailto:hp_agilent_equipment@...) Sent: Saturday, December 22, 2012 12:48 PM Subject: [hp_agilent_equipment] HP 8551 Spectrum Analyzer FS or trade? Hello all, I have an HP 8551 spectrum analyzer I would like to offer for sale or trade. It works reasonably well, as I describe in more detail below, but I am starting to upgrade my home shop with more "modern" equipment. Cosmetically, the unit is clean, with some sticker residue on the display units. It comes complete with all the necessary interconnecting cables and the oval power cords. It weighs a TON. The RF unit alone is 90 lbs, so I can't really ship it, even in parts. However, I live in Charlottesville, VA, and I frequently travel up the north-east corridor, so if you live anywhere between here and Burlington, VT, I am willing to deliver if you can wait until March or so. Otherwise, perhaps we can make arrangements. Some photos are posted here: _ pic/list_ () 851_1.jpg A screen shot of the analyzer showing the FM band with a dangling wire antenna and the input attenuator at 0 dB. Harmonic n=1. LO signal on left. 851_2.jpg A 1 dBm, 2.4 GHz signal at the input with RF attenuation set to 30 dB. n=2. 851_3.jpg Same signal displayed on band 4, which uses the 200 MHz IF, n=1. 851_4.jpg The FM band again, displayed on the orange-screened 851B. I would prefer not to part this instrument out, and to send all of it to a good, loving home. Please make me an offer. I don't have a good feel for price of this instrument particularly since shipping would normally be a dominant part of the cost. Alternatively I am willing to trade for any of the instruments below, in working or *repairable* condition. Of the highest interest are any of the 141T SA plug-ins listed. Any 8554/8555/8556 SA plug-ins for a 141T based spectrum analyzer, preferably in grey paint. 182T mainframe any 11664 A or B detectors a 8755C swept amplitude analyzer a sweeper covering ~MHz to ~2.5 GHz. So, if interested, please contact me off-list and let's discuss. Thanks and Happy Holidays! Dan 851B/8551B Spectrum analyzer. ---------------------------- 8551B: SN 625-00695 (RF unit) 851B: SN 526-00805 (Orange screen) 851B: SN 526-00339 (spare unit) What works: Mixer, at least at n=1, n=2 and n=3. I don't have sources to test higher harmonics. RF input attenuator Stabilized fine tune - with some care Trace centering is fine at or below 1 mc/cm, alowing one to quickly zoom in on a signal. Both 851B display units, with sharp and bright traces. Fine and course tuning Frequency vernier What doesn't work: Trace centering on the 3-300 MC/cm scales. The signal jumps around when switching scales, though it can still be tuned. I can't follow the manual procedure in section 3-34 to set the spectrum centering adjustment on the front panel. The tracking meter does not respond as it should. As a result, LO scale pointer is ~100 MC off on scales at or below the 1 mc/cm sweep and varies on the 3-300 mc/cm scales. May need to reglue the scale drum at some point, but it's ok for now The orange plastic filter in one of the 851s has cracks in it in the lower left corner just off scale. The tune knob had it's handle broken off, but I kept the original parts and was able to epoxy together a decent looking reconstruction, so it works now and looks ok. I can't figure out if the signal identifier works. It's supposed to shift the signal by n cm at 100 KC/cm, which it does, but when you press the "reference" knob, it should revert to the n=1 state. But instead the trace keeps moving off screen. I suspect this is related to the issues at large spans. What you get: A functional piece of history - the first calibrated spectrum analyzer from HP. A basic, working spectrum analyzer All interconnecting cables and oval power cords One ORIGINAL PAPER MANUAL for the 851B display section A spare 851B display unit (the orange one was originally paired with the 8551, judging from the stickers) Satisfaction of working with a wonderful instrument Herniated disks What you don't get: Any of the sources shown in the pictures The instrument rack, though that can be negotiated separately The 50 Ohm terminator on the back at the LO output. I only have a few of these and I need them, however it seems to work ok without it at the few frequencies I looked at. Paper manuals for the 8551B section - but these are available on-line. The right to return the instrument Medical insurance [Non-text portions of this message have been removed] ------------------------------------ Yahoo! Groups Links [Non-text portions of this message have been removed] |
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Re: What is a good shortwave radio to use with HP 8568B SA?
A converter with a software defined radio does sound like a good idea – if
I can find something that will work with my Mac or linux machines, that sounds like an easy way to go. I will look at the available options, and thanks a lot! On Fri, Dec 28, 2012 at 5:37 PM, jeffwa2scl <jeffpinsky@...> wrote: Duh! A USB SDR dongle with an up converter! The thought never entered my [Non-text portions of this message have been removed] |
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Re: What is a good shortwave radio to use with HP 8568B SA?
Duh! A USB SDR dongle with an up converter! The thought never entered my mind. What great way to go. I was thinking more strictly hardware (with my limited mindset). The funny thing is, I have one of those dongles and really never pushed it close to what it's capable off. I'll have to give it a try.
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--- In hp_agilent_equipment@..., "qrv@..." <qrv@...> wrote:
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Re: What is a good shortwave radio to use with HP 8568B SA?
Pretty much any shortwave radio that tunes 21.4 MHz and the modes you want should work. Sensitivity is not an issue as the IF output on the rear is a high level (you'd likely need an attenuator). For AM, you can find many cheap radios that would work. Adding SSB and FM is going to push the price up somewhat. If you're looking to do wide FM, you'll need to up convert to FM broadcast band or look into the high end receivers like the NorCal or Dana class receivers at 21.4. Remember that you'll need to use the zero span mode and won't be able to view the spectrum while monitoring.
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--- In hp_agilent_equipment@..., Bryce Schroeder <bryce.schroeder@...> wrote:
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Re: What is a good shortwave radio to use with HP 8568B SA?
Try one of the emergency radios with AM-FM-SSB.
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Or, a $20. RTL-SDR USB dongle on your computer with a Ham-it-Up HF converter between it and your HP 20mHz output. All-mode 0.5 - 900+ mHz plus a bunch of other useful features for under $100. Thank you for your response. I would prefer both AM, FM and SSB but --
Thanks! & 73, KD4E.com David Colburn nevils-station.com I don't google I SEARCH! duckduckgo.com Network: groups.yahoo.com/group/qrv Restored to design-spec at Heaven's gate 1Cor15:22 |
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Re: HP 8551 Spectrum Analyzer FS or trade?
Hi Daniel.
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If I remember correctly, and more and more lately I don't, the 8551 came with different front end modules for different frequency coverage's. What is the frequency range of yours? If it fits my needs I would be willing to pay for professional packing and the shipping charges to get it. Regards. Max. K 4 O DS. Email: max@... Transistor site Vacuum tube site: Woodworking site Music site: To subscribe to the fun with transistors group send an email to. funwithtransistors-subscribe@... To subscribe to the fun with tubes group send an email to, funwithtubes-subscribe@... To subscribe to the fun with wood group send a blank email to funwithwood-subscribe@... ----- Original Message -----
From: "Daniel Koller" <kaboomdk@...> To: <hp_agilent_equipment@...> Sent: Friday, December 28, 2012 8:44 AM Subject: Re: [hp_agilent_equipment] HP 8551 Spectrum Analyzer FS or trade? Hi folks, Is there really ZERO interest in an HP 8551 spectrum analyzer? Given that I didn't even get any comments from this usually vocal group, and having found some replies to older posts that went into my spam folder, I figured I'd just ask again (copied below). Perhaps a few more people are back from the holidays as well. Please do let me know if the group consensus is that this thing is really just a useless boat anchor even by vintage instrument standards. Thanks and have a happy new year! Dan ________________________________ From: kaboomdk <kaboomdk@...> To: hp_agilent_equipment@... Sent: Saturday, December 22, 2012 12:48 PM Subject: [hp_agilent_equipment] HP 8551 Spectrum Analyzer FS or trade? Hello all, I have an HP 8551 spectrum analyzer I would like to offer for sale or trade. It works reasonably well, as I describe in more detail below, but I am starting to upgrade my home shop with more "modern" equipment. Cosmetically, the unit is clean, with some sticker residue on the display units. It comes complete with all the necessary interconnecting cables and the oval power cords. It weighs a TON. The RF unit alone is 90 lbs, so I can't really ship it, even in parts. However, I live in Charlottesville, VA, and I frequently travel up the north-east corridor, so if you live anywhere between here and Burlington, VT, I am willing to deliver if you can wait until March or so. Otherwise, perhaps we can make arrangements. Some photos are posted here: 851_1.jpg A screen shot of the analyzer showing the FM band with a dangling wire antenna and the input attenuator at 0 dB. Harmonic n=1. LO signal on left. 851_2.jpg A 1 dBm, 2.4 GHz signal at the input with RF attenuation set to 30 dB. n=2. 851_3.jpg Same signal displayed on band 4, which uses the 200 MHz IF, n=1. 851_4.jpg The FM band again, displayed on the orange-screened 851B. I would prefer not to part this instrument out, and to send all of it to a good, loving home. Please make me an offer. I don't have a good feel for price of this instrument particularly since shipping would normally be a dominant part of the cost. Alternatively I am willing to trade for any of the instruments below, in working or *repairable* condition. Of the highest interest are any of the 141T SA plug-ins listed. Any 8554/8555/8556 SA plug-ins for a 141T based spectrum analyzer, preferably in grey paint. 182T mainframe any 11664 A or B detectors a 8755C swept amplitude analyzer a sweeper covering ~MHz to ~2.5 GHz. So, if interested, please contact me off-list and let's discuss. Thanks and Happy Holidays! Dan 851B/8551B Spectrum analyzer. ---------------------------- 8551B: SN 625-00695 (RF unit) 851B: SN 526-00805 (Orange screen) 851B: SN 526-00339 (spare unit) What works: Mixer, at least at n=1, n=2 and n=3. I don't have sources to test higher harmonics. RF input attenuator Stabilized fine tune - with some care Trace centering is fine at or below 1 mc/cm, alowing one to quickly zoom in on a signal. Both 851B display units, with sharp and bright traces. Fine and course tuning Frequency vernier What doesn't work: Trace centering on the 3-300 MC/cm scales. The signal jumps around when switching scales, though it can still be tuned. I can't follow the manual procedure in section 3-34 to set the spectrum centering adjustment on the front panel. The tracking meter does not respond as it should. As a result, LO scale pointer is ~100 MC off on scales at or below the 1 mc/cm sweep and varies on the 3-300 mc/cm scales. May need to reglue the scale drum at some point, but it's ok for now The orange plastic filter in one of the 851s has cracks in it in the lower left corner just off scale. The tune knob had it's handle broken off, but I kept the original parts and was able to epoxy together a decent looking reconstruction, so it works now and looks ok. I can't figure out if the signal identifier works. It's supposed to shift the signal by n cm at 100 KC/cm, which it does, but when you press the "reference" knob, it should revert to the n=1 state. But instead the trace keeps moving off screen. I suspect this is related to the issues at large spans. What you get: A functional piece of history - the first calibrated spectrum analyzer from HP. A basic, working spectrum analyzer All interconnecting cables and oval power cords One ORIGINAL PAPER MANUAL for the 851B display section A spare 851B display unit (the orange one was originally paired with the 8551, judging from the stickers) Satisfaction of working with a wonderful instrument Herniated disks What you don't get: Any of the sources shown in the pictures The instrument rack, though that can be negotiated separately The 50 Ohm terminator on the back at the LO output. I only have a few of these and I need them, however it seems to work ok without it at the few frequencies I looked at. Paper manuals for the 8551B section - but these are available on-line. The right to return the instrument Medical insurance ------------------------------------ Yahoo! Groups Links |
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Re: What is a good shortwave radio to use with HP 8568B SA?
Thank you for your response. I would prefer both AM, FM and SSB but
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economic compromises may have to be made. FM at a minimum. As to the frequency, I was assuming that I would be able to use the 20-something megahertz IF connector on the back of the spectrum analyzer. That's why I was thinking about a shortwave receiver; I know I've heard of other people doing this. On Fri, Dec 28, 2012 at 4:16 PM, J. Forster <jfor@...> wrote:
What frequency range are you looking for? |
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Re: HP-IB / GPIB Printer Emulator
It's not free, but PrintCapture does
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exactly what you are looking for. Based on my experience, it's an excellent product. I bought a copy and use it with some older HP gear, although KE5FX's plotter emulator sees the most use at my shop. Jack K8ZOA On 12/28/2012 4:33 PM, martin_u_fischer wrote:
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HP-IB / GPIB Printer Emulator
Hello Community,
many HP instruments (spectrum analyzer, oscilloscope) have a dedicated plot menu for outputting vector trace data and a separate print menu for outputting list data, texts or raster graphics. For screen plots, you all know John Miles? (KE5FX) excellent 7470.EXE plotter emulator which captures HP-GL/2 plot data via HP-IB and a HP-IB/USB adapter (Prologix, HP 82357A/B etc.) and stores them into a .plt file or renders them into a printable .BMP or .GIF graphic file. Printers with HP-IB Interface (e. g. the HP 2225A ThinkJet) are long gone, so... Would anybody know a free software solution for capturing (PCL) print data via HP-IB and a HP-IB/USB adapter to a PC for storing them into a graphic file, a print file or outputting them on an attached printer (e. g. LaserJet)? The name of the software might be KE5FX LaserJet.EXE printer emulator... ;-) Any hints much appreciated. Regards, and a Happy New Year Martin |
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Re: HP 8551 Spectrum Analyzer FS or trade?
Dave Brown
Once the BWO has been replaced with the YIG upgrade kit thats no longer an issue- does this one have that upgrade applied?
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73 Dave, ZL3FJ Christchurch, NZ ----- Original Message -----
From: <d.seiter@...> To: "hp agilent equipment" <hp_agilent_equipment@...> Sent: Saturday, December 29, 2012 8:13 AM Subject: Re: [hp_agilent_equipment] HP 8551 Spectrum Analyzer FS or trade? Another problem with the 8551 (besides its' weight and therefore very high shipping cost) it it's use of a BWO. They have a limited lifespan, and new old stock are like hen's teeth. I got a nice one from the local estate sale of a ham about three years ago, and it had multiple reminders on it about not leaving it fully powered up for long periods of time. It also can with three random BWOs and two HP sweepers that also use BWOs. |
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Re: What is a good shortwave radio to use with HP 8568B SA?
J. Forster
What frequency range are you looking for?
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I usewd a DEI R-1037F telemetry receiver on the 227 MHz IF output of an AIL 757 SA. Do you need AM / FM / other? -John ============= I am looking for a shortwave radio to use as a demodulator for my spectrum |
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What is a good shortwave radio to use with HP 8568B SA?
I am looking for a shortwave radio to use as a demodulator for my spectrum
analyzer, so I can listen to the signals I see. I don't have a shortwave receiver right now. Can someone make a recommendation, preferably for something relatively inexpensive? Thank you! |
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Re: DIY: Repair of HP Step Attenuators
Steve Reeves
I've used a piece of clear tape on the inside edges of the c-frame - works great.
Steve Sent from my iPod On Dec 28, 2012, at 2:00 PM, "i5spo" <piero.soldi@...> wrote:
[Non-text portions of this message have been removed] |
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Looking for an HP carcass.........
I have decided that I would prefer to have my GPSDO in a retired HP full width, 3-1/4" high enclosure so it can go in the stack with all the other stuff. Does anyone have a beyond repair instrument that you would be willing to part with? Something similar in size to the 3456 or the 5334 would be perfect. I am not looking for free, but really cheap would be nice.
I am in Cleveland, OH, USA 44107 Thanks for looking...... Cheers |
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Re: HP 8551 Spectrum Analyzer FS or trade?
Another problem with the 8551 (besides its' weight and therefore very high shipping cost) it it's use of a BWO. They have a limited lifespan, and new old stock are like hen's teeth. I got a nice one from the local estate sale of a ham about three years ago, and it had multiple reminders on it about not leaving it fully powered up for long periods of time. It also can with three random BWOs and two HP sweepers that also use BWOs.
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In talking with a few old timers I know from HP since then, the general consensus was similar. They didn't worry about it at the time because they could get new ones from Varian just down the road. -Dave ----- Original Message -----
From: "Daniel Koller" <kaboomdk@...> To: "hp agilent equipment" <hp_agilent_equipment@...> Sent: Friday, December 28, 2012 6:44:17 AM Subject: Re: [hp_agilent_equipment] HP 8551 Spectrum Analyzer FS or trade? Hi folks, Is there really ZERO interest in an HP 8551 spectrum analyzer? Given that I didn't even get any comments from this usually vocal group, and having found some replies to older posts that went into my spam folder, I figured I'd just ask again (copied below). Perhaps a few more people are back from the holidays as well. Please do let me know if the group consensus is that this thing is really just a useless boat anchor even by vintage instrument standards. Thanks and have a happy new year! Dan ________________________________ From: kaboomdk < kaboomdk@... > To: hp_agilent_equipment@... Sent: Saturday, December 22, 2012 12:48 PM Subject: [hp_agilent_equipment] HP 8551 Spectrum Analyzer FS or trade? Hello all, I have an HP 8551 spectrum analyzer I would like to offer for sale or trade. It works reasonably well, as I describe in more detail below, but I am starting to upgrade my home shop with more "modern" equipment. Cosmetically, the unit is clean, with some sticker residue on the display units. It comes complete with all the necessary interconnecting cables and the oval power cords. It weighs a TON. The RF unit alone is 90 lbs, so I can't really ship it, even in parts. However, I live in Charlottesville, VA, and I frequently travel up the north-east corridor, so if you live anywhere between here and Burlington, VT, I am willing to deliver if you can wait until March or so. Otherwise, perhaps we can make arrangements. Some photos are posted here: 851_1.jpg A screen shot of the analyzer showing the FM band with a dangling wire antenna and the input attenuator at 0 dB. Harmonic n=1. LO signal on left. 851_2.jpg A 1 dBm, 2.4 GHz signal at the input with RF attenuation set to 30 dB. n=2. 851_3.jpg Same signal displayed on band 4, which uses the 200 MHz IF, n=1. 851_4.jpg The FM band again, displayed on the orange-screened 851B. I would prefer not to part this instrument out, and to send all of it to a good, loving home. Please make me an offer. I don't have a good feel for price of this instrument particularly since shipping would normally be a dominant part of the cost. Alternatively I am willing to trade for any of the instruments below, in working or *repairable* condition. Of the highest interest are any of the 141T SA plug-ins listed. Any 8554/8555/8556 SA plug-ins for a 141T based spectrum analyzer, preferably in grey paint. 182T mainframe any 11664 A or B detectors a 8755C swept amplitude analyzer a sweeper covering ~MHz to ~2.5 GHz. So, if interested, please contact me off-list and let's discuss. Thanks and Happy Holidays! Dan 851B/8551B Spectrum analyzer. ---------------------------- 8551B: SN 625-00695 (RF unit) 851B: SN 526-00805 (Orange screen) 851B: SN 526-00339 (spare unit) What works: Mixer, at least at n=1, n=2 and n=3. I don't have sources to test higher harmonics. RF input attenuator Stabilized fine tune - with some care Trace centering is fine at or below 1 mc/cm, alowing one to quickly zoom in on a signal. Both 851B display units, with sharp and bright traces. Fine and course tuning Frequency vernier What doesn't work: Trace centering on the 3-300 MC/cm scales. The signal jumps around when switching scales, though it can still be tuned. I can't follow the manual procedure in section 3-34 to set the spectrum centering adjustment on the front panel. The tracking meter does not respond as it should. As a result, LO scale pointer is ~100 MC off on scales at or below the 1 mc/cm sweep and varies on the 3-300 mc/cm scales. May need to reglue the scale drum at some point, but it's ok for now The orange plastic filter in one of the 851s has cracks in it in the lower left corner just off scale. The tune knob had it's handle broken off, but I kept the original parts and was able to epoxy together a decent looking reconstruction, so it works now and looks ok. I can't figure out if the signal identifier works. It's supposed to shift the signal by n cm at 100 KC/cm, which it does, but when you press the "reference" knob, it should revert to the n=1 state. But instead the trace keeps moving off screen. I suspect this is related to the issues at large spans. What you get: A functional piece of history - the first calibrated spectrum analyzer from HP. A basic, working spectrum analyzer All interconnecting cables and oval power cords One ORIGINAL PAPER MANUAL for the 851B display section A spare 851B display unit (the orange one was originally paired with the 8551, judging from the stickers) Satisfaction of working with a wonderful instrument Herniated disks What you don't get: Any of the sources shown in the pictures The instrument rack, though that can be negotiated separately The 50 Ohm terminator on the back at the LO output. I only have a few of these and I need them, however it seems to work ok without it at the few frequencies I looked at. Paper manuals for the 8551B section - but these are available on-line. The right to return the instrument Medical insurance [Non-text portions of this message have been removed] |
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Re: DIY: Repair of HP Step Attenuators
i5spo
Hi Jarmo,
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maybe you have one cell stuck, due to magnetization of the small actuator... Can be locked to the ceiling of attenuator case. This appened to a good friend of mine, Art iw7jwy. So the 20 dB cell is always on. Try to do a calibration of S.A. If it fails, open and check the small 20 dB relay actuator. A simple repair is to glue a mall tab of mylar inside, on the roof of attenuator, over the sluggish relay actuator. HTH, Piero. --- In hp_agilent_equipment@..., "Jarmo" <jarmoblo@...> wrote:
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Re: hp 410c manual
--- In hp_agilent_equipment@..., "vk5abc" <vk5abc@...> wrote:
Don't know if this is the version you're after, but you can down the 410C manual from Agilent's website at The dowmload contains both 00410-90007 (May 74) and 00410-90009 (Mar 81)manuals. Not the highest quality scans, but still readable. Cheers, Dave M |
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Re: hp 410c manual
These look better:
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(Military version) from the same web site. Dave On 12/28/2012 10:26 AM, Steve Vineyard wrote:
Try here: |
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Re: hp 410c manual
This link is resolving to a weird web page, at least for me. The asterisks look suspicious ...
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Dave On 12/28/2012 10:26 AM, Steve Vineyard wrote:
Try here: |
to navigate to use esc to dismiss