Re: HP 8595E SA DB-25 RS232 is not functioning.
Hello again Candrian.
Sadly I do not know enough about those hardware options, to say for sure.? But if I had to recommend anything, I'd go for the HPIB(GPIB) interface designed for that analyser, if you can find one, and one of the common USB(or LAN) to GPIB adapters/controllers, there are several to choose from.
If your PC OS is Windows, go for the National Instruments device, and companion drivers.? Very well known, and works very well.
(NOTE!? NI are changing how they support "non current" products, so take care with them.)
Many people like NI's LabView (not me personally) and there is a lot of third party software out there that expects to use a NI interface.?? ? for one.
Or, the HP/Agilent equivalent, but using it's own native software (HP VEE) and drivers.? They might "Look" similar, and perform the same functions.? But, you CANNOT use NI drivers with the Agilent device, or the other way round.
If you use Linux in any flavour, there are ways to graft in the kernel needs for the NI devices, and there is some good code around using Python (in one form or another) to get work done.? The fun bit, is getting the OS to recognise and load drivers for the device itself.? It has even been done on a Raspberry Pi!
Then there are the Prologix devices (or the many look-alikes) as they don't actually have installable "drivers" as such, they appear to the OS as either a virtual serial port (USB connected types) or an address on your home/workshop LAN.
There are many DIY versions of the former, for example the AR488 Arduino based project.? For most people, they work well enough. Just don't expect to get anywhere close to the fabled 1 Mega Byte a second transfer rate, even if your instrument could do that.
The LAN connected GPIB adapters are possibly the most flexible. Both need some software skill's to deploy and make work, though lots of other people have done it.?? The LAN type's, of course can be used by any PC on your LAN if you need (but generally NOT at the same time!)? Of course, if you don't have a wired LAN, not a lot of use without some more kit.? (There are ways, but...)
If you have one instrument only, they are fairly easy to use.? If you have multiple that you need to use together to form a system, there is some more software work to do, to point the controller at the instrument you want to exchange data with.? Some of the documentation is a bit vague on that subject!
If you are not already, you WILL become fluent in whatever programming language you end up using, as well as "GPIB speek". Creating a system to do a job, and making it all work as you wish/need, is very satisfying.? But oh so frustrating at times! Don't assume all instrument (or software) documentation is 100% accurate either!? Also use good quality GPIB/HPIB cables, and take care of them.? (Personal experience from 30 odd years working with GPIB instruments etc for work...)
As we say, "The Devil is in the Detail"?? And there are lots of small details that you have to get correct for things to work.? Any one wrong, and often, nothing will work, or you get bad data or weird instrument behaviour!
(Hint:? ALWAYS check the error flags and status words!? And handle such errors, even if that is just to stop execution of your software, but put a meaningful message up for the luckless user when that happens! ...)
Above all, have fun!.? Instrument control over any interface, can be a deep rabbit hole to get lost in!
??? Dave G8KBV
--
Created on and sent from a Unix like PC running and using free and open source software:
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Re: 5086-7337 *Yig Oscillator issue*
Most of your assumptions are true, but if the end point voltages are not reasonably close you won’t see output at either end. You might find that if you supplied a tuning voltage to the YIG somewhere in the middle of its tuning range you would possible find output from the YIG but off in frequency by as much as 1GHz or more. If the endpoints are not close and beyond the tune range of the YIG +/-, there will be little to no output from the YIG. Many of HP YIG choice were either 3Vdc/GHz tune voltage, there is also another spec. of mA/GHz, but I cannot recall that now. There also exist 1Vdc/GHz tuning voltage YIG’s.
Don Bitters
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Re: 5086-7337 *Yig Oscillator issue*
Recently I've resolved the burnt T1 transformer issue on the mainframe. You can see that in my older 8350B post. I think the mainframe is now ok, but the definitive confirmation is try to operate a healthy plugin. I've already think on that, Paul.?
Until that happens, I think I will do the tracking generator conversion, Don't need 20 gig sig gen in a hurry, I've already have a trusty (and hacked) 8341A. So TG for the moment, later on a healthy plugin to test the proper operation of the mainframe and then I'll do more study on the YO and the other acronyms present in the war.
Regards,
Ruben
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Re: HP 312A wave analyser
For that generation of instrument, my first guess would be CdS.
These are light-controlled resistors, so
photodiodes/phototransistors would not be acceptable subs in most
cases.
-- Cheers
Tom
(btw, it's silicon, not silicone. Just remember "silicon valley" is
for chips, "silicone valley" is Hollywood)
--
Prof. Thomas H. Lee
Allen Ctr., Rm. 205
420 Via Palou Mall
Stanford University
Stanford, CA 94305-4070
On 3/15/2023 21:15, Brad Latta via
groups.io wrote:
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I have recently acquired an old HP 312A wave analyser,
which has been sitting around in a lab with little use. I
would like to know about the photo conductor block ( P/N
1990-0009 & 5212-B3H, that drives the Borroughs B5991
nixie tubes -130V rail.?
The photo conductors are themselves driven by NE-2E4 neons
in a transistor flip flop circuit. If the photo conductor
fails, is it germainiam, silicone, or selenium? or what device
could be substituted for a potential fault? Could I use a
opto- coupler maybe? Or an IR receiver sensor?
? ? ? ? ? ? ? Regards Brad
|
I have recently acquired an old HP 312A wave analyser, which has been sitting around in a lab with little use. I would like to know about the photo conductor block ( P/N 1990-0009 & 5212-B3H, that drives the Borroughs B5991 nixie tubes -130V rail.? The photo conductors are themselves driven by NE-2E4 neons in a transistor flip flop circuit. If the photo conductor fails, is it germainiam, silicone, or selenium? or what device could be substituted for a potential fault? Could I use a opto- coupler maybe? Or an IR receiver sensor? ? ? ? ? ? ? ? Regards Brad
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Re: HP 8595E SA DB-25 RS232 is not functioning.
On Wed, Mar 15, 2023 at 06:05 AM, Dave_G0WBX wrote:
Set the PC up so that RealTerm just dumps what comes in to the screen.? 9600, n, 8, 1 should be a good start.
Hi, I just tried the COPY button and I received a bunch of characters on my RealTerm . So it seems you are right Dave maybe option 023 is only for outgoing messages and no option for remote controlling the device. Do you know if i can install option 043? Is there a card that i can plug in and upgrade the scope for remote controlling?? Thanks, Candrian
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Re: Looking for a feedthrough capacitor
How much room on the 'other' side from the 90 deg bend?
Would something like this:
be made to fit with a bit of a spacer under the hexagonal end? Not
cheap however at 3.62 quid per nF!
On 15/03/2023 15:25, Martin via
groups.io wrote:
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Hi all,
I'm looking for a replacement for a shorted feedthrough capacitor
for my SNA1 Wandel & Goltermann analyzer. It seems special in
that it is very thin on the interiours side, where the bended wire
is. I cannot find anything like that on the internt. Below some
pics (metric scale!).
The parts list says 8c20 / 0855-0020.0008 / C-Keramik / ZZMZ / 4N7
/ 20/80 / 63V.
So its a 4n7 ceramic capacitor with 63V rating. In the SNA this
capacitor is handling a 12V supply line.
Does anyone have a similar item in his drawer?
thanks
Martin
Attachments:
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Re: Looking for a feedthrough capacitor
You probably have to enter it on the german site, I don't know.
Its a guy who sells 5 PCM testers for 370 EUR. He bought them for the sole purpose of having parts for his NFAs...
cheers
Martin
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Re: Looking for a feedthrough capacitor
Well, yes, just one instrument for both of us would be fine.... But no, thanks.
Cheers....
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On 15/03/2023 17:58, Martin via groups.io wrote: Hi Harke,
item #294954912663 on a well known auction site would probably yield a good stock of these.
Not a bargain, unfortunately.
cheers
Martin
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Re: Looking for a feedthrough capacitor
That item doesn't show up as anything. What was it?
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On Wed, Mar 15, 2023 at 05:58:00PM +0100, Martin via groups.io wrote: Hi Harke,
item #294954912663 on a well known auction site would probably yield a good stock of these.
Not a bargain, unfortunately.
cheers
Martin
--
Paul Amaranth, GCIH | Manchester MI, USA
Aurora Group of Michigan, LLC | Security, Systems & Software
paul@... | Unix/Linux - We don't do windows
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Re: Looking for a feedthrough capacitor
Hi Harke,
item #294954912663 on a well known auction site would probably yield a good stock of these.
Not a bargain, unfortunately.
cheers
Martin
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Re: Looking for a feedthrough capacitor
Hello Martin,
I immediately recognized this feed-through capacitor. Seems
typical for WG as my Rauschpegelsender RS100 has the same. One
showed a short and as I considered it as unobtanium, I just
removed this cap and installed a wire. Not so nice but it works.
In the RS100 it is used as connector to supply + 12 V to a pcb
with the noise generator. I guess the mechanical force in the end
destroyed this feed-through cap.
Obviously: if you find a source, please let me know.
Best regards,
Harke
On 15-3-2023 16:25, Martin via
groups.io wrote:
toggle quoted message
Show quoted text
Hi all,
I'm looking for a replacement for a shorted feedthrough capacitor
for my SNA1 Wandel & Goltermann analyzer. It seems special in
that it is very thin on the interiours side, where the bended wire
is. I cannot find anything like that on the internt. Below some
pics (metric scale!).
The parts list says 8c20 / 0855-0020.0008 / C-Keramik / ZZMZ / 4N7
/ 20/80 / 63V.
So its a 4n7 ceramic capacitor with 63V rating. In the SNA this
capacitor is handling a 12V supply line.
Does anyone have a similar item in his drawer?
thanks
Martin
 
|
Looking for a feedthrough capacitor
Hi all, I'm looking for a replacement for a shorted feedthrough capacitor for my SNA1 Wandel & Goltermann analyzer. It seems special in that it is very thin on the interiours side, where the bended wire is. I cannot find anything like that on the internt. Below some pics (metric scale!). The parts list says 8c20 / 0855-0020.0008 / C-Keramik / ZZMZ / 4N7 / 20/80 / 63V. So its a 4n7 ceramic capacitor with 63V rating. In the SNA this capacitor is handling a 12V supply line. Does anyone have a similar item in his drawer? thanks Martin  
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Re: HP 8595E SA DB-25 RS232 is not functioning.
Hi again.
I pulled a manual from:-
After a lot of scrolling and reading, sadly, the only references I can see for the RS232 port, is to attach a printer/plotter to, to make printed copies of the screen and other data.
There is no command/response protocol listing, that you'd expect if it was capable of being remote controled/programmed via that port. (Option 043, correct?)
I can find no mention of using it for remote control/programming of the analyser from a PC.
For that, you'd need "Option 041" the HPIB interface.? (That can also be used with plotters, but obviously only HPIB devices.)? And I'd bet that comes with a seperate manual that will detail all the commands and responses etc.
Try reconfiguring your serial link, to that the analyser can send data to the PC.? I think it is only capable of 9600bd, so you can probably loop back the handshake and status lines so that the analyser is happy all the time.? The PC should be more than fast enough to swallow 9600bd data without issue.
Set the PC up so that RealTerm just dumps what comes in to the screen.? 9600, n, 8, 1 should be a good start.
You'll probably see loads of garbage when you initiate a plot/print from the analyser, that is OK.
I'm not saying you "Can't" use the RS232 to remote control/program the instrument, just that "I still don't know" if that is possible, based on the info I've found so far (link above.)
Regards.
??? Dave G8KBV.
--
Created on and sent from a Unix like PC running and using free and open source software:
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Re: HP 8341A how to install attenuator
Thank's for the information,? finally we have succeed? ?comparing one 8341A with another having an attenuator, now the unit control the attenuator nicely, obviously the explanation in service manual are quite obscure for me and it is quite difficult to understand how to compute the value to store.
but finally I have done it thank's for your explanations
ON1EV
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Re: HP 8595E SA DB-25 RS232 is not functioning.
Thank your for valuable notes.
What I did try yesterday was to clear DTR (PC) <-> CTS(SA) and set RTS (PC) <-> DCD (SA) but I didn't observed the L letter on bottom left but nothing.?
I'll try the COPY option you suggested to check if I can receive data.?
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Re: HP 8595E SA DB-25 RS232 is not functioning.
Correction – to the lines in the
message below
?
To get an L, SA CTS must
not be asserted, because T will obscure the L.
Then SA DCD must be asserted (+).
?
If both CTS and DCD
on the SA are asserted, i.e. when the pc port is open normally, only T will
appear
?
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From: [email protected] [mailto:[email protected]] On Behalf Of k1ggi
Sent: Tuesday, March 14, 2023
10:24 PM
To: [email protected]
Subject: Re:
[HP-Agilent-Keysight-equipment] HP 8595E SA DB-25 RS232 is not functioning.
?
Ok, getting the T is reassuring.
?
To get an L, SA RTS must not be asserted,
because T will obscure the L.
Then SA DCD must be asserted (+).
?
If both RTS and DCD on the SA are
asserted, i.e. when the pc port is open normally, only T will appear.
?
Please look at the voltage.
?
Do you see a positive voltage on SA DCD
(DB25 pin 8)? (produced when pc RTS is asserted on pc DE9 pin 7)
?
That is necessary for commands to be
recognized by the SA.
?
I have option 043, your option 023 may
behave differently, but if you can configure your COPY button to plot to rs232
in CONFIG, then the SA should be able to transmit rs232 data when you press
COPY, regardless of whether it can receive rs232 commands.
So then if you see the T, with your
RealTerm port open, pressing COPY should transmit a lengthy burst of ascii plot
data that should be displayed by RealTerm. That may be worth trying.
?
I’m still not sure if your pc
usb-rs232 adapter needs its DSR (DE9 pin6) asserted in order to transmit.
I’m suspicious that the chip may need that control signal asserted in
hardware even if the RealTerm software application is configured for no
hardware flow control. My FTDI adapter does not. Try tying the adapter pin 6 to
pin 8 (both driven by SA DTR pin 20).
?
Ed
?
Just a correction here.
The connections I have made are:
SA? ?
? ? ? ? ? PC (USB RS232 adapter)
P5. CTS?
? ? DTR? ?(measured -6V coming from the adapter)
P20. DTR?
?CTS
So when I said that I set DTR I meant DTR on PC side which is connected to CTS
on SA. So when I set SA DTR thus the CTS on SA side I see the T letter on bottom
left of the SA screen.
When I set or clear RTS on PC thus DCD on SA side oI can't notice any
difference or the L letter appearing.?
In both options and all possible combinations of DTR & RTS in PC side I
couldn't manage to send any commands and receive a response.?
I tried the following commands:
IP;
ID;
SNGLS;
*IDN?
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Re: HP 8595E SA DB-25 RS232 is not functioning.
Ok, getting the T is reassuring.
?
To get an L, SA RTS must not be asserted,
because T will obscure the L.
Then SA DCD must be asserted (+).
?
If both RTS and DCD on the SA are asserted,
i.e. when the pc port is open normally, only T will appear.
?
Please look at the voltage.
?
Do you see a positive voltage on SA DCD (DB25
pin 8)? (produced when pc RTS is asserted on pc DE9 pin 7)
?
That is necessary for commands to be
recognized by the SA.
?
I have option 043, your option 023 may
behave differently, but if you can configure your COPY button to plot to rs232
in CONFIG, then the SA should be able to transmit rs232 data when you press
COPY, regardless of whether it can receive rs232 commands.
So then if you see the T, with your
RealTerm port open, pressing COPY should transmit a lengthy burst of ascii plot
data that should be displayed by RealTerm. That may be worth trying.
?
I’m still not sure if your pc usb-rs232
adapter needs its DSR (DE9 pin6) asserted in order to transmit. I’m
suspicious that the chip may need that control signal asserted in hardware even
if the RealTerm software application is configured for no hardware flow control.
My FTDI adapter does not. Try tying the adapter pin 6 to pin 8 (both driven by
SA DTR pin 20).
?
Ed
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From: [email protected] [mailto:[email protected]] On Behalf Of candrian
Sent: Tuesday, March 14, 2023 4:05
PM
To: [email protected]
Subject: Re:
[HP-Agilent-Keysight-equipment] HP 8595E SA DB-25 RS232 is not functioning.
?
Just a correction here.
The connections I have made are:
SA? ?
? ? ? ? ? PC (USB RS232 adapter)
P5. CTS?
? ? DTR? ?(measured -6V coming from the adapter)
P20. DTR?
?CTS
So when I said that I set DTR I meant DTR on PC side which is connected to CTS
on SA. So when I set SA DTR thus the CTS on SA side I see the T letter on
bottom left of the SA screen.
When I set or clear RTS on PC thus DCD on SA side oI can't notice any
difference or the L letter appearing.?
In both options and all possible combinations of DTR & RTS in PC side I
couldn't manage to send any commands and receive a response.?
I tried the following commands:
IP;
ID;
SNGLS;
*IDN?
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Re: Firmware for HP 54200D
One more discovery on this - it appears that the D-version (54200D) and A-version (54200A) used the same EPROM set. I have found the same labels in pictures online of motherboards from both versions, and the newer ROM images that I loaded onto my unit are actually from a 54200A but work on my 54200D. So, if you have a 54200A or a 54200D, I am asking pretty please if you can check if you have the EPROMs labeled 54200-80022 through 54200-80028 and if so could you please dump them.
Thanks again and in advance,
Matthew D'Asaro
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Re: 5086-7337 *Yig Oscillator issue*
Hi All Ok about the acronyms? ? We had RPG? Rotary Pulse Generator ?apparently this is the HMI control knob ??Human machine interface (a Knob ) or as I know it ?RPE ?rotary pulse encoder RUD? new one for me ?but ok ? Regarding the voltage on a Yig basically providing the main votes are on it they normally work? but reference to the Plug in Maine output mudded the waters? Hens talking about setting up the multiplier yig assembly ? but as it was a parts Kit? that there could have been an issue with the Yig drive voltage as no output in the range 2-6 Ghz ? Roberto I do not know your outlay but I would strongly suggest you do not butcher it ( pull it apart ) As in the long term you will regret it Ar you still running the 8350 frame of several power supplies as that would be my number one repair and go shopping for another plug in Just a bit of information I have a 8350 that has given big problems as I didn’t realise the socket interface between plug in and 8350 was corroded on the 8350 Best of luck ? ? ? ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Tom Lee
Sent: 14 March 2023 17:22
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] 5086-7337 *Yig Oscillator issue*? Or rocket-propelled grenade, in another profession. In certain circumstances both can undergo rapid uncontrolled disassembly (RUD). Tom Sent from my iThing; please forgive the typos and brevity ? Dear, RPG stand for "Rotary Pulse Generator". This is the endless knob on front panel for changing parameters. ? Il Mar 14 Mar 2023, 17:57 Bruce <bruce@...> ha scritto: Don -
Thanks - I have not played much with the 8350 plug YIGS (mostly 834X?
stuff) - good information to know.
I do find it a bit surprising though.? Reasoning is as follows,?
correct me if I'm wrong:
1) Frequency is primarily determined by main coil current
2) Remaining voltages supply the oscillator and amp (if there is one)?
- they do not vary with frequency (true ??)
3) The linearization is primarily a shaping function on the main coil current.
So I would expect that if the main coil current were within the?
expected limits and the other voltages were correct, the YIG would?
have output.? Thoughts??
Cheers and thanks for the insight.
Bruce
Cheers!
Bruce
Quoting "Don Bitters via " <donbitters=[email protected]>:
> Absolutely yes! I have been there on this issue. Even a brand new?
> one from the factory may not give an output, or a very low output?
> until it is aligned with the proper endpoint drive voltages.
>
> Don Bitters
>
>
>
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RubenRubio
Martin
medasaro
Paul Bicknell