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Re: Hp141+8553B+8552B and HP8601A
Noris Battaino
David Wise <david_wise@...> wrote: The 8553B does not have a LO output jack, only the 8553L does.
To use a non-option 007 8601A with the 8553B would require 8601A modifications and a special cable to connect to the 141T. Regards, Dave Wise Thanks for repply . _,_._,___ Thanks for repply Dave....I have understand that with my hp8601 and my 8553B I can't measure filters like my tracking HP8444 and HP8555A!!! I'm afraid. Thanks again! Best regards. iw3sgg --------------------------------- Be a better sports nut! Let your teams follow you with Yahoo Mobile. Try it now. |
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Re: Hp141+8553B+8552B and HP8601A
The 8553B does not have a LO output jack, only the 8553L does.
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To use a non-option 007 8601A with the 8553B would require 8601A modifications and a special cable to connect to the 141T. Regards, Dave Wise -----Original Message----- |
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Re: Hp141+8553B+8552B and HP8601A
iw3sgg
--- In hp_agilent_equipment@..., "jaking" <jaking@...> wrote:
Hi ZL4AI, Thanks for repply. I'm looking the manual and I'm looking the HP8601.....I havent the option 7. I have only a VTO OUTPUT connector,the LO INPUT connector is not mounted on the rear pannel. If I read right I must connect the first LO OUTPUT op spectrum analyzer (HP8553B) to the LO INPUT of HP8601A. It is correct?? For you is possible to modify my HP8601A to ADD the 7 option?? Now I'm reading the manual from bama site. Thanks for repply again. Best regards. iw3sgg |
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Re: Hp141+8553B+8552B and HP8601A
The 8601A employs the same mixing strategy as the 8553,
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with a 200-310MHz 1st LO. Option 7 adds rear-panel jacks to the 8601A to accept the 8553L's 1st LO output in place of the 8601A's internal 1st LO. You have to adjust the 8553's Fine Tuning control to center the TG in the SA RBW, and you can't use narrow sweeps, which tune the 8552's 47MHz LO instead of the 200-310. Dave Wise -----Original Message----- |
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Re: Hp141+8553B+8552B and HP8601A
jaking
Look in the 8601a manual (read Option 7).
There is provision to take control signal from the 8601, and use that to control the spectrum analyzer. The frequencies between the analyser and the 8601a are the same. Yours sincerely ZL4AI _____ From: hp_agilent_equipment@... [mailto:hp_agilent_equipment@...] On Behalf Of lothar baier Sent: Wednesday, 21 November 2007 11:47 a.m. To: hp_agilent_equipment@... Subject: Re: [hp_agilent_equipment] Hp141+8553B+8552B and HP8601A Most likely this is not gonna work, its too inacurate, the 8601 is not synthesized and therefore will drift way too much iw3sgg <iw3sgg@yahoo. <mailto:iw3sgg%40yahoo.com> com> wrote: Hi HP people! A little post for us. I have a spectrum analyzer HP141T with IF plug HP8552B and HP8553B. The spectrum analyzer cover 0-110Mhz or 0-11Mhz. I have a sweep generator HP8601A that sweep from 0-110 or 0-11Mhz. Is possible to connect the sweep generator to analyzer for measure filters like a tracking generator??? I connect the sweep out of HP8601A to scan in/out of HP8552B and I switch the SCAN MODE to EXTernal. I connect the out RF signal of HP8601A to DUT (device under test like a crystal filter) and from DUT I go to spectrum analyzer. The result is that the screen of HP141 move to the right of about 2-3cm. Why?? Is like that the spectrum analyzer can't pursue the sweep signal. Someone of us have same idea? Is possible to use HP8601A Swepper to measure filters with HP141T like a tracking generator??? Thanks for repply and I'm sorry for bad english,I'm in Italy..... Best regards. --------------------------------- Be a better sports nut! Let your teams follow you with Yahoo Mobile. Try it now. Internal Virus Database is out-of-date. Checked by AVG Free Edition. Version: 7.5.503 / Virus Database: 269.15.30/1126 - Release Date: 12/11/2007 12:56 p.m. |
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Re: 8640B External Reference
Richard W. Solomon
I found where the jumpers are located, thanks again.
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The answer that I was looking for. 73, Dick, W1KSZ/7 -----Original Message-----
From: "Richard W. Solomon" <w1ksz@...> |
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Re: 8640B External Reference
Richard W. Solomon
Thank you, I will look into that.
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73, Dick, W1KSZ/7 -----Original Message-----
From: k1ggi <k1ggi@...> |
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Re: 8640B External Reference
Richard W. Solomon
I see your reputation for off-handed comments is well deserved.
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Too bad you have no clue what you are talking about and I don't wish to explain it to you. 73, Dick, W1KSZ/7 -----Original Message-----
From: arthurok <arthurok@...> |
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Re: Anyone know if these movies still exist
Harvey White
On Wed, 21 Nov 2007 22:17:57 +1100, you wrote:
They made movies? Wow Uber geeks!! I'd love to see them - I could xferI am in Florida. For those in Au or the like with PAL, I could (I think) make PAL DVD's or just make the files available by DVD, if they're not too large. Harvey
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Re: Anyone know if these movies still exist
swingbyte
They made movies? Wow Uber geeks!! I'd love to see them - I could xfer to dvd - but Australia is a long way to ship such precious tapes.
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Harvey White wrote:
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Re: 8640B External Reference
k1ggi
The 8640B external reference can be configured to accept a 1MHz input,
but the jumpers are deeply buried in the time-base module on A8A3. It is not necessary for the reference to be a sinusoid. It is first attenuated and then amplified before being fed into a logic gate, which feeds the counter chain. The internal oscillator always runs and there can be some weak crosstalk that beats the internal with the external reference, which can show up when they are very close in frequency as very close-in spurs. 73, Ed, K1GGI --- In hp_agilent_equipment@..., "Richard W. Solomon" <w1ksz@...> wrote: effort to try and supply an external reference to the 8640B, yes ??rear, internally selectable for 10, 1, .1, .01 MHz and 1 pps outputs. I guess I'll just use oneto supply the counters.
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Re: YIG cross-reference
lothar baier
the first digits filled up with 0s usually lead to the unit, for example 08360-xxxx is from a 8360 series
Geraldo Lino de Campos <geraldo@...> wrote: Usually there are HP YIG oscillators or filters at reasonable prices on EBAY, sometimes identified by the board number. It will be very interesting to know the instrument they fitted, to be able to know the specifications and eventually use the board with small changes. Is there a cross-reference from the board ID to the instrument number? Or can someone contribute with at least a few? -- ------------------------------------ Geraldo geraldo@... --------------------------------- Never miss a thing. Make Yahoo your homepage. |
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Re: 8640B External Reference
i own a copy of his meter software the filter software is free for the limited versions which is all i ever used for my projects. and are very easy to use "i hate doing math" ----- Original Message -----
From: lothar baier To: hp_agilent_equipment@... Sent: Tuesday, November 20, 2007 5:58 PM Subject: RE: [hp_agilent_equipment] 8640B External Reference sorry i wasnt to clear on that, the DDS i was refering to actually has a clock multiplier build in that allow a max of 30MHz i think. Mike Feher <n4fs@...> wrote: If you use 10 MHz as a clock for a DDS, then, you are just as well off using a flip-flop. Your output will be just a 5 MHz square wave either way. Now if you were to multiply the 10 MHz up first, like even just doubling it to 20 MHz, then you will have easily exceeded Nyquist and you also have room to put in a nice filter for 5 MHz. Still, the best recommendation was the first one. Just divide by two and filter. You may not even need to filter as most counters use a square wave anyway. 73 - Mike Mike B. Feher, N4FS 89 Arnold Blvd. Howell, NJ, 07731 732-886-5960 _____ From: hp_agilent_equipment@... [mailto:hp_agilent_equipment@...] On Behalf Of lothar baier Sent: Tuesday, November 20, 2007 5:37 PM To: hp_agilent_equipment@... Subject: Re: [hp_agilent_equipment] 8640B External Reference 5MHz was quite common back then, it had to do with the fact that 5MHz XO had a better phasenoise, you will also find 5MHz on many older rubidium and cesium beam standarts. You have basically two options, the first one is to just use a 2/1 frequency divider, you can find those at any semiconductor company fairly cheap, the other solution which is a bit more intricat is to use a DDS chip to generate your 5MHz out of a 10MHz XO "Richard W. Solomon" <w1ksz@earthlink. <mailto:w1ksz%40earthlink.net> net> wrote: After moving to Arizona I know have at least one of my GPS Stabilized Oscillators up and running. I intend to use the 10 MHz output as the External Reference for a couple of EIP Counters and I had hoped my 8640B. But, HP in their infinite wisdom, has deemed that a 5 MHz reference is needed. Is there any way to change that from 5 MHz to 10 MHz ? Maybe I should just stick 10 MHz in and see what happens ?? Any thoughts on this ? Thanks, Dick, W1KSZ/7 --------------------------------- Never miss a thing. Make Yahoo your homepage. --------------------------------- Be a better pen pal. Text or chat with friends inside Yahoo! Mail. See how. |
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YIG cross-reference
Usually there are HP YIG oscillators or filters at reasonable prices
on EBAY, sometimes identified by the board number. It will be very interesting to know the instrument they fitted, to be able to know the specifications and eventually use the board with small changes. Is there a cross-reference from the board ID to the instrument number? Or can someone contribute with at least a few? -- ------------------------------------ Geraldo geraldo@... |
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Re: 8640B External Reference
a flip flop and simple low pass if needed is too much for an extra class ham to build up??
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----- Original Message -----
From: Richard W. Solomon To: hp_agilent_equipment@... Sent: Tuesday, November 20, 2007 7:56 PM Subject: Re: [hp_agilent_equipment] 8640B External Reference So basically what you are telling me is that it is not worth the effort to try and supply an external reference to the 8640B, yes ?? I have two TrueTime XL-AK GPS Receivers that have 5 outputs on the rear, internally selectable for 10, 1, .1, .01 MHz and 1 pps outputs. I guess I'll just use one to supply the counters. Thanks for the replies. 73, Dick, W1KSZ/7 -----Original Message----- >From: lothar baier <microwaveengineer1968@...> >Sent: Nov 20, 2007 5:08 PM >To: hp_agilent_equipment@... >Subject: Re: [hp_agilent_equipment] 8640B External Reference > >One thing need to be made clear however, the external timebase will not affect the frequency stability in normal operating mode since it is only used for the frequency counter, if you push the phaselock button then it will lead to an increased stability of the signal. > Another possibility is to get a 5078A distribution amplifier which would be usefull since he wants to drive some other counters and stuff as well, as far as i know HP made cards to go in those that allowed for a 5MHz or 1MHz output, anyway a 2/1 divider is easy enough to build, you can use TTL or just go to hittite and buy a part for about $2, lowpass filters are wasy to build or you can get a little monolithic one from coilcraft or mini circuits > > > as he says a low pass filter will produce a quasi sine wave "gaussian responce" >----- Original Message ----- >From: lothar baier >To: hp_agilent_equipment@... >Sent: Tuesday, November 20, 2007 5:58 PM >Subject: RE: [hp_agilent_equipment] 8640B External Reference > >sorry i wasnt to clear on that, the DDS i was refering to actually has a clock multiplier build in that allow a max of 30MHz i think. > >Mike Feher <n4fs@...> wrote: If you use 10 MHz as a clock for a DDS, then, you are just as well off using >a flip-flop. Your output will be just a 5 MHz square wave either way. Now if >you were to multiply the 10 MHz up first, like even just doubling it to 20 >MHz, then you will have easily exceeded Nyquist and you also have room to >put in a nice filter for 5 MHz. Still, the best recommendation was the first >one. Just divide by two and filter. You may not even need to filter as most >counters use a square wave anyway. 73 - Mike > >Mike B. Feher, N4FS > >89 Arnold Blvd. > >Howell, NJ, 07731 > >732-886-5960 > >_____ > >From: hp_agilent_equipment@... >[mailto:hp_agilent_equipment@...] On Behalf Of lothar baier >Sent: Tuesday, November 20, 2007 5:37 PM >To: hp_agilent_equipment@... >Subject: Re: [hp_agilent_equipment] 8640B External Reference > >5MHz was quite common back then, it had to do with the fact that 5MHz XO had >a better phasenoise, you will also find 5MHz on many older rubidium and >cesium beam standarts. >You have basically two options, the first one is to just use a 2/1 frequency >divider, you can find those at any semiconductor company fairly cheap, the >other solution which is a bit more intricat is to use a DDS chip to generate >your 5MHz out of a 10MHz XO > >"Richard W. Solomon" <w1ksz@earthlink. <mailto:w1ksz%40earthlink.net> net> >wrote: >After moving to Arizona I know have at least one of my GPS Stabilized >Oscillators up and running. I intend to use the 10 MHz output as the >External Reference for a couple of EIP Counters and I had hoped my >8640B. But, HP in their infinite wisdom, has deemed that a 5 MHz >reference is needed. Is there any way to change that from 5 MHz to 10 >MHz ? Maybe I should just stick 10 MHz in and see what happens ?? > >Any thoughts on this ? > >Thanks, Dick, W1KSZ/7 > >--------------------------------- >Never miss a thing. Make Yahoo your homepage. > > > > > >--------------------------------- >Be a better pen pal. Text or chat with friends inside Yahoo! Mail. See how. > > > > > > > > > > >--------------------------------- >Get easy, one-click access to your favorites. Make Yahoo! your homepage. > > > > > > >Yahoo! Groups Links > > > |
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Re: 8640B External Reference
a flip flop with a low pass filter should work quite well at generating a nice sine wave
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go to tonne software and download his free filter design software you can either use off the shelf chokes or make them up using toroids and your q meter little piece of perf board and a cmos flipflop should do then check the output with your spectrum analyzer. maybe the man is right and a square wave is all thats needed id have to look at my pdf of an 8640b i have 2 of them and the internal vcxos are good enough for what im doing concidering that they were an upgrade from a 606a / 608d that i used for over 20 yrs one nice thing about the 606a is that i can manualy sweep it very quickly to check frequency responce i have a wavetek 166 50 mhz function generator/ pulse generator that i can do that with too it came from someone who gave up on fixing it i have another 10 mhz wavetek that came as a parts unit and i learned their circuits from it the 166 is well worth having ----- Original Message -----
From: Richard W. Solomon To: hp_agilent_equipment@... Sent: Tuesday, November 20, 2007 4:16 PM Subject: [hp_agilent_equipment] 8640B External Reference After moving to Arizona I know have at least one of my GPS Stabilized Oscillators up and running. I intend to use the 10 MHz output as the External Reference for a couple of EIP Counters and I had hoped my 8640B. But, HP in their infinite wisdom, has deemed that a 5 MHz reference is needed. Is there any way to change that from 5 MHz to 10 MHz ? Maybe I should just stick 10 MHz in and see what happens ?? Any thoughts on this ? Thanks, Dick, W1KSZ/7 |
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Re: 8640B External Reference
Richard W. Solomon
So basically what you are telling me is that it is not worth the effort to try and supply
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an external reference to the 8640B, yes ?? I have two TrueTime XL-AK GPS Receivers that have 5 outputs on the rear, internally selectable for 10, 1, .1, .01 MHz and 1 pps outputs. I guess I'll just use one to supply the counters. Thanks for the replies. 73, Dick, W1KSZ/7 -----Original Message-----
From: lothar baier <microwaveengineer1968@...> |
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Re: HP-5245L Plug-Ins
Dave Brown
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----- Original Message -----
From: "David C. Hallam" <dhallam@...> To: "HP Agilent" <hp_agilent_equipment@...> Sent: Wednesday, November 21, 2007 11:35 AM Subject: [hp_agilent_equipment] HP-5245L Plug-Ins I acquired a box full of plug-ins for my 5245L counter and have a couple of Yes- read off the dial the 10 MHz multiple to add to the reading (or subtract reading from, if tuned on the high side of the unknown) to get the input frequency.
There should still be a pdf of the manual here courtesy Mark VK2BAK-its about 13 MB. I have yet to scan a page or two for him to get clean scans of them, but this should be enough to get you started. Cheers DaveB, ZL3FJ PS If you have a spare 5255A (3-12 GHz) in that box of plugins I'm interested. |
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Re: 8640B External Reference
lothar baier
One thing need to be made clear however, the external timebase will not affect the frequency stability in normal operating mode since it is only used for the frequency counter, if you push the phaselock button then it will lead to an increased stability of the signal.
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Show quoted text
Another possibility is to get a 5078A distribution amplifier which would be usefull since he wants to drive some other counters and stuff as well, as far as i know HP made cards to go in those that allowed for a 5MHz or 1MHz output, anyway a 2/1 divider is easy enough to build, you can use TTL or just go to hittite and buy a part for about $2, lowpass filters are wasy to build or you can get a little monolithic one from coilcraft or mini circuits as he says a low pass filter will produce a quasi sine wave "gaussian responce" ----- Original Message -----
From: lothar baier To: hp_agilent_equipment@... Sent: Tuesday, November 20, 2007 5:58 PM Subject: RE: [hp_agilent_equipment] 8640B External Reference sorry i wasnt to clear on that, the DDS i was refering to actually has a clock multiplier build in that allow a max of 30MHz i think. Mike Feher <n4fs@...> wrote: If you use 10 MHz as a clock for a DDS, then, you are just as well off using a flip-flop. Your output will be just a 5 MHz square wave either way. Now if you were to multiply the 10 MHz up first, like even just doubling it to 20 MHz, then you will have easily exceeded Nyquist and you also have room to put in a nice filter for 5 MHz. Still, the best recommendation was the first one. Just divide by two and filter. You may not even need to filter as most counters use a square wave anyway. 73 - Mike Mike B. Feher, N4FS 89 Arnold Blvd. Howell, NJ, 07731 732-886-5960 _____ From: hp_agilent_equipment@... [mailto:hp_agilent_equipment@...] On Behalf Of lothar baier Sent: Tuesday, November 20, 2007 5:37 PM To: hp_agilent_equipment@... Subject: Re: [hp_agilent_equipment] 8640B External Reference 5MHz was quite common back then, it had to do with the fact that 5MHz XO had a better phasenoise, you will also find 5MHz on many older rubidium and cesium beam standarts. You have basically two options, the first one is to just use a 2/1 frequency divider, you can find those at any semiconductor company fairly cheap, the other solution which is a bit more intricat is to use a DDS chip to generate your 5MHz out of a 10MHz XO "Richard W. Solomon" <w1ksz@earthlink. <mailto:w1ksz%40earthlink.net> net> wrote: After moving to Arizona I know have at least one of my GPS Stabilized Oscillators up and running. I intend to use the 10 MHz output as the External Reference for a couple of EIP Counters and I had hoped my 8640B. But, HP in their infinite wisdom, has deemed that a 5 MHz reference is needed. Is there any way to change that from 5 MHz to 10 MHz ? Maybe I should just stick 10 MHz in and see what happens ?? Any thoughts on this ? Thanks, Dick, W1KSZ/7 --------------------------------- Never miss a thing. Make Yahoo your homepage. --------------------------------- Be a better pen pal. Text or chat with friends inside Yahoo! Mail. See how. --------------------------------- Get easy, one-click access to your favorites. Make Yahoo! your homepage. |
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Re: Anyone know if these movies still exist
J Forster
The prints I received were VHS, not on film. I don't know if anyone at Tek
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even cares after the sellout. Also NTSC is largely going away in a year. -John pdxoregonpete wrote: They should at least be preserved, the Tek ones I remember went back |
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