Re: Which WECO is which ?
?Looks like you mistyped 3586 as 3486. But what I wanted to add is I'm half way through installing a
BNC on my 3586B and it'd going to work out well. I will add I'm using a panel mount barrel, because it has
the length needed. Other BNC's were short although the panel mount BNC looks like it would have worked
?with just enough clearance to remove a cable. As you know you push on a bnc before you twist, the clearance
with a standard panel mount was very, very close.
?BTW, I order the 1/4" Weco on someones recomendation and it is the wrong one, so I just decided to change the connector. Three hours work instead of 5 days wait.
|
Re: Replacement for Inter-Board Connectors on 3325a
Stan:
I can send you the cables for postage. Contact me off list.
Dan in Chandler, AZ
|
Re: need Bill West switches
St. Johns is close, actually.? I'm at Exit 3 SR 14. I'll be out and about this week, and may be traveling Lombard. I'll buzz 5 off the board.
JimMc
On Tuesday, October 24, 2017, 4:54:56 PM PDT, buyer@... [hp_agilent_equipment] wrote:
?
Five would do nicely
I'm in St Johns if you come over to the south side of the river or ...
Alan
|
Hello,
sorry to ask: the 4195A test kit, do you mean the legendary
impendance adapter for it or the normal six SMA unit?
Tam
On 25.10.2017 01:45, Bob Bownes
bownes@... [hp_agilent_equipment] wrote:
toggle quoted message
Show quoted text
?
Folks,
I'm going to be
getting rid of the following this weekend if anyone is
interested. The equipment is located in Albany, N.Y.
USA. I'd love to see it go to someone who cares before
it goes to someone who is going to reclaim it for the
gold.
Expect the older
HP stuff to go pretty cheap. Don't expect the newer
stuff to go for scrap prices, but reasonable offers
won't be passed up.
I'm really not
inclined to want to pack and ship any of this, so onsite
is preferred. If you want it packed and shipped, it will
cost actual shipping charges, plus double box costs with
some foam in bag packages, etc. e.g. expect $50 or more
just to pack it. See above comments about not wanting to
pack and ship. :)
Forgive me the
non HP gear in the list. ;)
Feel free to
spread the word.
Bob
| HP 3336C Synthesized generator |
| HP 8657A signal generator |
| Tek TDS744A |
| Tek TDS3032 |
| Tek DSA 601 |
| Tek DSA 602 |
| Tek 7603 rack mount scope w 7D20
digitizer |
| Tek 7603 rack mount scope w 7D20
digitizer |
| Tek 1.3GHz counter cm251 |
| Tek CD250 175MHz counter |
| HP 8920A Test Set |
| HP 4935A |
| Hp 4935A w software |
| HP 8011A Pulse generator |
| HP 8013B Pulse generator |
| Tektronix K6042 w probe |
| Tektronix K6042 w probe |
| Tektronix K6042 w probe |
| Tektronix 576 curve tracer w
accessories, test fixtures, current pulser |
| HP 8656B signal generator |
| HP 4195A network analyzer w test set |
| HP 33120A arbitrary waveform
generator |
| HP 6030A power supply |
|
Bertan High voltage Power Supply
(1Kv)
|
| High voltage Power Supply - new
0-600v |
| High voltage Power Supply - new
0-600v |
| Hi-Pot tester |
| Fluke 23 meter |
| Fluke 23 meter |
| GenRad Type 107 Variable Inductor -
Vintage |
| HP 214A Pulse generator |
| Tektronix 7704A Oscilloscope |
| Tektronix 2235 Oscilloscope |
| Tek TMS504 mainframe? w
modules |
| Tek TMS504 mainframe - empty |
| Tek TMS 501 Mainframe |
| Tek TMS 503 mainframe w3x? AM503
probe amplifier modules |
| Tek TMS 503 mainframe w2x? AM503
probe amplifier modules |
| Tek TMS 503 mainframe w? signal
generator modules |
| HP 211B square wave generator |
| Tektronix scope carts |
| Tektronix PS2521 Programmable P/S w
gpib |
| Tektronix PS2521 Programmable P/S w
gpib |
| Bench Power supply |
| Bench Power supply |
| Bench Power supply |
| Simpson replacement meters |
|
Re: need Bill West switches
I spoke too soon. Its one RU too short, so unless you can splice in 1.75" ....
not bloody likely.
:-(
Alan
|
Re: need Bill West switches
Five would do nicely
I'm in St Johns if you come over to the south side of the river or ...
Alan
|
Re: Distribution divider/amplifier for 10MHz GPSDO
For the very serious about time and frequency:
HP really was one of the leaders in this industry.
You'd be surprised at how inexpensive a cesium beam standard can be had for. Mine was over two orders of magnitude less than the cost of my house. The rubidium was a third of that. :)
?
I have two comments to make about using and distributing 10 MHz derived from a GPS locked crystal oscillator. I have been using this method for perhaps fifteen years, in my home lab.?
First of all, even a relatively simple device should have a long enough time constant to smooth out jumps and to have reasonably low phase noise. Unless you are running a cal lab or sending probes to Mars, a "practical user" should have a good experience with using GPS for very accurate measurements; far better than even a stand-alone 40 year old HP oscillator, which may fail at any moment.
I use video distribution amplifiers along with television RF hybrid splitters. Most equipment that requires 10 MHz has a high impedance input, so the loss through the splitter is quite low. If you have extraordinary?requirements, you should have a tuned circuit for each channel and an unbalanced to balanced transformer in the circuit to break a potential "ground loop", for each output. That's where you get into a great deal of expense. It would be my guess that few of us have to go that extra mile.
If you really are serious, get a Cesium standard or Hydrogen Maser time keeper; you may have to sell your car to do it, but you will be the king of the hill in frequency measuring.
I think most of us are pragmatic, and don't have the time or money to be purists. There are millions of devices using GPS for time and frequency synchronization out there in the "real world", and they are far better than what preceded GPS. I don't want to go back to WWVB on 60 kHz, using strip chart recorders to measure errors.
Stuart
K6YAZ
Los Angeles, California
|
Folks,
I'm going to be getting rid of the following this weekend if anyone is interested. The equipment is located in Albany, N.Y. USA. I'd love to see it go to someone who cares before it goes to someone who is going to reclaim it for the gold.
Expect the older HP stuff to go pretty cheap. Don't expect the newer stuff to go for scrap prices, but reasonable offers won't be passed up.
I'm really not inclined to want to pack and ship any of this, so onsite is preferred. If you want it packed and shipped, it will cost actual shipping charges, plus double box costs with some foam in bag packages, etc. e.g. expect $50 or more just to pack it. See above comments about not wanting to pack and ship. :)
Forgive me the non HP gear in the list. ;)
Feel free to spread the word.
Bob
| HP 3336C
Synthesized generator |
| HP 8657A
signal generator |
| Tek
TDS744A |
| Tek
TDS3032 |
| Tek DSA
601 |
| Tek DSA
602 |
| Tek 7603
rack mount scope w 7D20 digitizer |
| Tek 7603
rack mount scope w 7D20 digitizer |
| Tek
1.3GHz counter cm251 |
| Tek
CD250 175MHz counter |
| HP 8920A
Test Set |
| HP 4935A |
| Hp 4935A
w software |
| HP 8011A
Pulse generator |
| HP 8013B
Pulse generator |
| Tektronix
K6042 w probe |
| Tektronix
K6042 w probe |
| Tektronix
K6042 w probe |
| Tektronix
576 curve tracer w accessories, test fixtures, current pulser |
| HP 8656B
signal generator |
| HP 4195A
network analyzer w test set |
| HP
33120A arbitrary waveform generator |
| HP 6030A
power supply |
|
Bertan
High voltage Power Supply (1Kv)
|
| High
voltage Power Supply - new 0-600v |
| High
voltage Power Supply - new 0-600v |
| Hi-Pot
tester |
| Fluke 23
meter |
| Fluke 23
meter |
| GenRad
Type 107 Variable Inductor - Vintage |
| HP 214A
Pulse generator |
| Tektronix
7704A Oscilloscope |
| Tektronix
2235 Oscilloscope |
| Tek
TMS504 mainframe? w modules |
| Tek
TMS504 mainframe - empty |
| Tek TMS
501 Mainframe |
| Tek TMS
503 mainframe w3x? AM503 probe
amplifier modules |
| Tek TMS
503 mainframe w2x? AM503 probe
amplifier modules |
| Tek TMS
503 mainframe w? signal generator
modules |
| HP 211B
square wave generator |
| Tektronix
scope carts |
| Tektronix
PS2521 Programmable P/S w gpib |
| Tektronix
PS2521 Programmable P/S w gpib |
| Bench
Power supply |
| Bench
Power supply |
| Bench
Power supply |
| Simpson
replacement meters |
|
Re: need Bill West switches
Alan -
I have a panel from a 5342A counter that has 20 or so, how many do you need??
JimMc
On Tuesday, October 24, 2017, 2:26:15 PM PDT, buyer@... [hp_agilent_equipment] wrote:
?
there are ways to overcome removal and reinsertion onto a board
so, new or used, not expecting to find new
Cheers to across the river
Alan
|
Re: need Bill West switches
its here, just look up Alan Garren Waltzing Bear Audio and you'll find my email address
alan somewhat near waltzingbear point com
|
Re: Distribution divider/amplifier for 10MHz GPSDO
I have two comments to make about using and distributing 10 MHz derived from a GPS locked crystal oscillator. I have been using this method for perhaps fifteen years, in my home lab.?
First of all, even a relatively simple device should have a long enough time constant to smooth out jumps and to have reasonably low phase noise. Unless you are running a cal lab or sending probes to Mars, a "practical user" should have a good experience with using GPS for very accurate measurements; far better than even a stand-alone 40 year old HP oscillator, which may fail at any moment.
I use video distribution amplifiers along with television RF hybrid splitters. Most equipment that requires 10 MHz has a high impedance input, so the loss through the splitter is quite low. If you have extraordinary?requirements, you should have a tuned circuit for each channel and an unbalanced to balanced transformer in the circuit to break a potential "ground loop", for each output. That's where you get into a great deal of expense. It would be my guess that few of us have to go that extra mile.
If you really are serious, get a Cesium standard or Hydrogen Maser time keeper; you may have to sell your car to do it, but you will be the king of the hill in frequency measuring.
I think most of us are pragmatic, and don't have the time or money to be purists. There are millions of devices using GPS for time and frequency synchronization out there in the "real world", and they are far better than what preceded GPS. I don't want to go back to WWVB on 60 kHz, using strip chart recorders to measure errors.
Stuart
K6YAZ
Los Angeles, California
StuartL73@...
|
Replacement for Inter-Board Connectors on 3325a
I want to add an 002 option board to my 3325a. I need four board to board connector cables. The connectors on these cables seem to be some sort of rf type. Are they a known rf connector in current production? If these connectors aren't available, can someone suggest a suitable replacement? I have found it possible to cut an rca jack pin flush with its sleeve, and then insert into the female connectors on the boards. I don't trust this since the modified rca jack may not be making good contact, and the original cables may have a controlled impedance I have to duplicate.
Any ideas?
Stan
|
Re: Loading 8340 FW into a 8341 sweeper
Hi there it is much easiere just take the caibration letter inside the unit and look for the line with the model number. Simply enter the 8340 in there and you have a 26.5Ghz generator. It might have a few dbm lower output as the SYTM is not calibrated upthere.
You?can look in the manual how to change the values in the EEprom through the buttons on the front panel.
best regards Peter
Fra: hp_agilent_equipment@... p? vegne af guancalvin@... [hp_agilent_equipment]
Sendt: 24. oktober 2017 23:45
Til: hp_agilent_equipment@...
Emne: [hp_agilent_equipment] Loading 8340 FW into a 8341 sweeper
?
?
This may sounds crazy but have anyone tried to put the 8340 CPU board into a 8341 or just the FW prom?
I looked through a lot of the schematics and comparing the part numbers for major assemblies, they look extremely similar. The 8341 level control logic also has the 20Ghz breakout support just like 8340 does.
Although 8341 has a 20Ghz SYTM and 8340 has a 26.5g one, but the SYTM driver and control logic assemblies are identical.
I'm sure there will be some differences in the CPU boards (FW ROM) that disables band 4 in 8341. I am curious if a 8341 SYTM can be overdriven to send out 26.5ghz at usable output level if the CPU board allows it? Based on my previous experience with SRD,
n and n+1 harmonics are pretty comparable in amplitude, and having YIG filter march up couple gigs is not impossible.
Thanks,
Calvin
|
Loading 8340 FW into a 8341 sweeper
This may sounds crazy but have anyone tried to put the 8340 CPU board into a 8341 or just the FW prom? I looked through a lot of the schematics and comparing the part numbers for major assemblies, they look extremely similar. The 8341 level control logic also has the 20Ghz breakout support just like 8340 does.
Although 8341 has a 20Ghz SYTM and 8340 has a 26.5g one, but the SYTM driver and control logic assemblies are identical.
I'm sure there will be some differences in the CPU boards (FW ROM) that disables band 4 in 8341. I am curious if a 8341 SYTM can be overdriven to send out 26.5ghz at usable output level if the CPU board allows it? Based on my previous experience with SRD, n and n+1 harmonics are pretty comparable in amplitude, and having YIG filter march up couple gigs is not impossible.
Thanks, Calvin
|
Re: need Bill West switches
On 10/24/2017 05:29 PM, buyer@... [hp_agilent_equipment] wrote: the one that goes around the front panel? I may have the part you are
looking for, its something else but I just took the screws out to
replace the missing ones in my 3562A. Yes, it's the front frame of the chassis, without the panel that buttons/knobs/etc mount to. Just the empty frame. Except for some that were modified for specific instruments (I think those are quite rare), they are all the same. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
|
Re: need Bill West switches
Ok, Ok, I see the signature with your location now
d'oh
Alan
|
Re: need Bill West switches
the one that goes around the front panel? I may have the part you are looking for, its something else but I just took the screws out to replace the missing ones in my 3562A.
Where are you?
Alan
|
Re: need Bill West switches
there are ways to overcome removal and reinsertion onto a board
so, new or used, not expecting to find new
Cheers to across the river
Alan
|
Re: HP 3455A stability issue
Thanks for the replies, finally had a chance to play with this some more.?
As a sanity check, I re-cleaned the relevant areas of the inguard board with a soft paint brush and Freon-TF, as I could see some small spots of residue from flux, or lord knows what.? This seems to have helped quite a bit, easily cutting the "creep" to half or less of what was seen before (have now seen it read as high as 150uV).? Naturally, condensation caused by the cold cleaner caused issues until it had COMPLETELY dissipated, easily taking over an hour.?
This made me wonder, has anyone used a conformal coating on circuits like this, post manufacture?? It appears that some of the devices themselves have/had some sort of coating on the body itself, but not on the leads nor board.? Curious as to your thoughts or recommendations here.? This would seemingly help instability due to humidity in a big way.?
As a sidestep relating to this, what is considered the "best", non-conductive coating out there to use now??? Years ago, clear Krylon enamel was supposed to be very good, but I can't imagine that would be the ideal stuff to use on critical, sensitive circuits like this.?
Regards,
Chris
From: "jehancoc@... [hp_agilent_equipment]"
To: hp_agilent_equipment@...
Sent: Saturday, October 21, 2017 12:50 PM
Subject: [hp_agilent_equipment] Re: HP 3455A stability issue
?
though some people have found old integration caps most likely you have a leaky FET.? ?They are tough to find but the section in the manual that addresses this problem should help.
|
Ed,
Thanks for your info.
Best regards,
Antonio/CT1TE
---
A 2017-10-24 20:45, edbreya@... [hp_agilent_equipment] escreveu:
toggle quoted message
Show quoted text
?
This is totally a wild-assed guess, from distant memory, so could be entirely wrong, and I don't know if it will help. I think Inertial Motors (IMC) became part of Kollmorgan, which became part of Emerson Electric, and maybe some others in between.
Ed
|
bownes
Dave McGuire