survey of 400 E and 400 F service manual editions?
Hello everyone,
Where do I find the list of service manual editions for the 400 E/EL
and 400 F/FL AC voltmeters?
Or, copies of the later editions of these product service manuals?
I'm looking at some circa mid 1980s 400 FLs with main (A2) boards that
are NOT covered in the earlier editions (my copy is July 1974) of the
400 F/FL service manuals.
Thanks.
|
Re: 8656B & Surge Suppressor
Although I can't be sure from the single photo in the Radwell web site, the CP1105 looks just like my Sola MCR-500.
Jeremy
On Wed, Aug 22, 2018 at 3:31 PM, KeepIt SimpleStupid via Groups.Io <keepitsimplestupid@...> wrote: At work I outfitted some of our critical test systems with this
<snip> _._,_._,_
|
Re: 8656B & Surge Suppressor
At work I outfitted some of our critical test systems with this
and an ISOBAR surge suptessor.? The company is now know as ? They come up on epay a lot.
A MacIntosh connected to a bunch of IEEE test equipment had a life of 17 years before the system was upgraded.? The mac issues were floppy drive and dirt.? The SCSI hard drive even lasted 17 years and maybe more.
Check out videos on youtube by Powervar.
|
Re: 8656B & Surge Suppressor
Be careful with them ¨C The sola units depend on an accurate 60 HZ to do their magic.? If the FX on GEN Power varies the voltage output can vary.? They work as a tuned saturated transformer in conjunction to the capacitor across a winding. ? 73, ? Bill, WA2DVU Cape May ?
toggle quoted message
Show quoted text
From: [email protected] < [email protected]> On Behalf Of Leon Robinson Sent: Wednesday, August 22, 2018 5:05 PM To: [email protected]Subject: Re: [HP-Agilent-Keysight-equipment] 8656B & Surge Suppressor ? I have a 2KVA Sola MCR Series for my workbench, a 750VA for my Computer
and a 250VA for my NAS boxes. When the Standby generator is running the MCR's grumble a little when
The only problem is they are heavy especially the 2KVA at over 100 Lbs, and I
am going to have to move it soon when I move the workbench. Leon Robinson ?? K5JLR
Political Correctness is a Political Disease.
From: Richard Knoppow <dickburk@...>
To: [email protected]
Sent: Wednesday, August 22, 2018 3:12 PM
Subject: Re: [HP-Agilent-Keysight-equipment] 8656B & Surge Suppressor ? ? ? One could put an oscilloscope across the output of a CVT to
test for both gross distortion and suppression of spikes and
noise on the power line. Modern CVTs do not produce much
distortion and low distortion ones can be ordered.
? ? The ultimate way to get clean power is to use a UPS. They
can provide complete isolation from the shore power line. The
amount of distortion depends on the design but low distortion UPS
sytems are available since some equipment doesn't like much
distortion. This is probably the most expensive way of
eliminating power line glitches but also provides very reliable
power.
? ? Lots of people do not like CVTs and there is a lot of myth
about them but IMO they work well and do shut down if there is a
short in the demand side. Some say they don't shut down fast
enough but if so I am not sure a fuse would be much faster. I
have had equipment saved by a CVT shutting down.
? ? They are indeed heavy, get quite hot, and can be mechanically
noisy although not all are.
On 8/22/2018 12:34 PM, Jeremy Nichols wrote:
> I don't have a whole-bench surge suppressor as we don't have
> severe power spikes or brownouts in this area. (Much of my
> equipment is non-solid-state and less sensitive to power line
> noise/spikes.) For the sensitive stuff, I have a Sola constant
> voltage transformer (CVT), which I occasionally use. CVTs are
> big, heavy, and emits an annoying hum in operation. They also use
> power even when operating without a load.
>
> I tested the CVT on a Variac and confirmed its ability to provide
> 115 VAC out regardless of input (in the range 100¨C130 VAC).
> Lacking the ability to put large spikes on my AC power line, I
> haven't tested the CVT's ability to knock them down. Without a
> load, my Sola uses about as much energy as a 60 Watt light bulb.
> Interestingly, this waste energy largely goes away as the CVT
> sees a load.
>
> CVTs contain only a transformer and some AC capacitors. Smaller
> ones like mine plug into an AC outlet; larger ones usually are
> hard-wired into the electrical system they serve. Mine, bought
> from an eBay seller (yes, risky, but <$100 including shipping)
> needed only a good cleaning before I put it into use. It's
> another option to consider for protecting sensitive equipment.
>
> Jeremy
--
Richard Knoppow
dickburk@...
WB6KBL
?
|
Re: 8656B & Surge Suppressor
I have a 2KVA Sola MCR Series for my workbench, a 750VA for my Computer
and a 250VA for my NAS boxes.
When the Standby generator is running the MCR's grumble a little when
the frequency wobbles.
The only problem is they are heavy especially the 2KVA at over 100 Lbs, and I
am going to have to move it soon when I move the workbench. ? Leon Robinson ?? K5JLR
Political Correctness is a Political Disease.
From: Richard Knoppow <dickburk@...>
To: [email protected]
Sent: Wednesday, August 22, 2018 3:12 PM
Subject: Re: [HP-Agilent-Keysight-equipment] 8656B & Surge Suppressor
? ? One could put an oscilloscope across the output of a CVT to test for both gross distortion and suppression of spikes and noise on the power line. Modern CVTs do not produce much distortion and low distortion ones can be ordered. ? ? The ultimate way to get clean power is to use a UPS. They can provide complete isolation from the shore power line. The amount of distortion depends on the design but low distortion UPS sytems are available since some equipment doesn't like much distortion. This is probably the most expensive way of eliminating power line glitches but also provides very reliable power. ? ? Lots of people do not like CVTs and there is a lot of myth about them but IMO they work well and do shut down if there is a short in the demand side. Some say they don't shut down fast enough but if so I am not sure a fuse would be much faster. I have had equipment saved by a CVT shutting down. ? ? They are indeed heavy, get quite hot, and can be mechanically noisy although not all are. On 8/22/2018 12:34 PM, Jeremy Nichols wrote: > I don't have a whole-bench surge suppressor as we don't have > severe power spikes or brownouts in this area. (Much of my > equipment is non-solid-state and less sensitive to power line > noise/spikes.) For the sensitive stuff, I have a Sola constant > voltage transformer (CVT), which I occasionally use. CVTs are > big, heavy, and emits an annoying hum in operation. They also use > power even when operating without a load. > > I tested the CVT on a Variac and confirmed its ability to provide > 115 VAC out regardless of input (in the range 100¨C130 VAC). > Lacking the ability to put large spikes on my AC power line, I > haven't tested the CVT's ability to knock them down. Without a > load, my Sola uses about as much energy as a 60 Watt light bulb. > Interestingly, this waste energy largely goes away as the CVT > sees a load. > > CVTs contain only a transformer and some AC capacitors. Smaller > ones like mine plug into an AC outlet; larger ones usually are > hard-wired into the electrical system they serve. Mine, bought > from an eBay seller (yes, risky, but <$100 including shipping) > needed only a good cleaning before I put it into use. It's > another option to consider for protecting sensitive equipment. > > Jeremy -- Richard Knoppow dickburk@...WB6KBL
|
Re: 8656B & Surge Suppressor
One could put an oscilloscope across the output of a CVT to test for both gross distortion and suppression of spikes and noise on the power line. Modern CVTs do not produce much distortion and low distortion ones can be ordered.
The ultimate way to get clean power is to use a UPS. They can provide complete isolation from the shore power line. The amount of distortion depends on the design but low distortion UPS sytems are available since some equipment doesn't like much distortion. This is probably the most expensive way of eliminating power line glitches but also provides very reliable power.
Lots of people do not like CVTs and there is a lot of myth about them but IMO they work well and do shut down if there is a short in the demand side. Some say they don't shut down fast enough but if so I am not sure a fuse would be much faster. I have had equipment saved by a CVT shutting down.
They are indeed heavy, get quite hot, and can be mechanically noisy although not all are.
toggle quoted message
Show quoted text
On 8/22/2018 12:34 PM, Jeremy Nichols wrote: I don't have a whole-bench surge suppressor as we don't have severe power spikes or brownouts in this area. (Much of my equipment is non-solid-state and less sensitive to power line noise/spikes.) For the sensitive stuff, I have a Sola constant voltage transformer (CVT), which I occasionally use. CVTs are big, heavy, and emits an annoying hum in operation. They also use power even when operating without a load.
I tested the CVT on a Variac and confirmed its ability to provide 115 VAC out regardless of input (in the range 100¨C130 VAC). Lacking the ability to put large spikes on my AC power line, I haven't tested the CVT's ability to knock them down. Without a load, my Sola uses about as much energy as a 60 Watt light bulb. Interestingly, this waste energy largely goes away as the CVT sees a load.
CVTs contain only a transformer and some AC capacitors. Smaller ones like mine plug into an AC outlet; larger ones usually are hard-wired into the electrical system they serve. Mine, bought from an eBay seller (yes, risky, but <$100 including shipping) needed only a good cleaning before I put it into use. It's another option to consider for protecting sensitive equipment.
Jeremy
--
Richard Knoppow
dickburk@...
WB6KBL
|
Re: HP 70 K MMS software, whole system, modules & ROM's ( including ... Hp 70909A, 70910A, etc.)
Keysight Technologies currently uses the N7800A Calibration Platform.
http://cal.software.keysight.com/
This supports a wide variety of the newer models,? but probabedly not the much older ones. re
When I was in the calibraition field (39 years), I was using the Fluke Met/Cal platform. I purchased and wrote many automated calibration/performance tests. A couple of these were for the old HP 70K system.
Steve
Sent from my Samsung Galaxy smartphone.
toggle quoted message
Show quoted text
-------- Original message -------- From: Sven Schnelle <svens@...> Date: 8/22/18 2:15 PM (GMT-05:00) Subject: Re: [HP-Agilent-Keysight-equipment] HP 70 K MMS software, whole system, modules & ROM's ( including ... Hp 70909A, 70910A, etc.)
Hi, i would be interested in all the HP calibration software - not only HP 70k, also for other HP test equipment. I think the easiest way to get the software running is an older PC where you can run the HP82324A Basic coprocessor, which is basically a HP9000/300 system. I'm currently trying another approach - emulating the HP9000/300 system on a modern PC. I've started to implement a HP9000/300 system using mame (http://mamedev.org/), so it can be emulated. We currently support emulating the HP9895 and HP9122C floppy drive, and have HP BASIC running. What's missing to use that in a meaningful way for HP test equipment is the ability to talk via IEEE-488 to the outside world. There's some kind of MAME interface available called IEEE remotizer, which could be useful for talking to external devices. Here's a screenshot how HP basic looks in the emulator: https://stackframe.org/hp300/basic.png In https://stackframe.org/hp300/ there are also other pictures of HP-UX booting in the emulator. the stuff required to boot HP-UX 9 is not upstream yet (SCSI controller, MMU stuff, etc). Currently i'm mostly alone working on the project, if anybody on this list feels like contributing/helping you're welcome to join. Regards Sven On 08/22/2018 07:42 PM, garp6 wrote: > hi, > > Am looking for all the software related to the HP 70K MMS system, its > modules, calibration & analysis software and related ROM's. > > Although it might be fanciful, the goal would be to have the HP 70K > MMS system running on a modern laptop using a USB-GPIB adapter, and to > also be able to upgrade any ROM's etc, for all of the MMS modules. > > This does not preclude anyone who is able to run it on the old HP > computer systems, their help to modernize the HP 70K software suite > would be most welcome. > > So wondering if we can collectively assemble a complete archive of any > HP 70K ?software, firmware, etc.? > > To proceed, it would need a detailed examination of the original Rocky > Mountain Basic / HP Instrument Basic / HP Basic files needs to occur. > Then to port (or re-write) that software to some more modern computer > we can all use, perhaps Python, C, or VB or something else. > Would hopefully be a team effort, but would certainly be an Open > Project, having the original & the disassembled / reassembled HP 70K > files in an archive. > > I worry that any remaining HP 70K software, on diskettes, ROMs', > personality cards, etc. will soon be tossed out, without an archive. > ... The old timers that worked on this equipment won't be around forever. > The HP 70K hardware itself seems so useful, interesting and now > recently becoming available at affordable prices, it simply makes > sense to appeal for an HP 70K software archive to be actively > assembled; { along with any un-obtainable documentation }. > > I have had some past experience reading and dis assembling / > re-writing old ROM code extracted from instrumentation & some > experience with old RMB & porting old HP Instrument Basic programs to > run on a newer (post HP) TransEra Basic platform using Win Xp.? > > Anyway, the quest is for ?any and ?all ?HP 70K software, ROMware, etc. > to be placed in an open, freely downloadable ?archive. > > thank you, >
|
Re: 8656B & Surge Suppressor
I don't have a whole-bench surge suppressor as we don't have severe power spikes or brownouts in this area. (Much of my equipment is non-solid-state and less sensitive to power line noise/spikes.) For the sensitive stuff, I have a Sola constant voltage transformer (CVT), which I occasionally use. CVTs are big, heavy, and emits an annoying hum in operation. They also use power even when operating without a load.?
I tested the CVT on a Variac and confirmed its ability to provide 115 VAC out regardless of input (in the range 100¨C130 VAC). Lacking the ability to put large spikes on my AC power line, I haven't tested the CVT's ability to knock them down. Without a load, my Sola uses about as much energy as a 60 Watt light bulb. Interestingly, this waste energy largely goes away as the CVT sees a load.?
CVTs contain only a transformer and some AC capacitors. Smaller ones like mine plug into an AC outlet; larger ones usually are hard-wired into the electrical system they serve. Mine, bought from an eBay seller (yes, risky, but <$100 including shipping) needed only a good cleaning before I put it into use. It's another option to consider for protecting sensitive equipment.
Jeremy
<snip> to keep the thread from getting too long.
-- 4.
|
Re: HP 70 K MMS software, whole system, modules & ROM's ( including ... Hp 70909A, 70910A, etc.)
Hi,
i would be interested in all the HP calibration software - not only HP
70k, also for other HP test equipment. I think the easiest way to get
the software running is an older PC where you can run the HP82324A Basic
coprocessor, which is basically a HP9000/300 system.
I'm currently trying another approach - emulating the HP9000/300 system
on a modern PC. I've started to implement a HP9000/300 system using mame
(), so it can be emulated. We currently support
emulating the HP9895 and HP9122C floppy drive, and have HP BASIC
running. What's missing to use that in a meaningful way for HP test
equipment is the ability to talk via IEEE-488 to the outside world.
There's some kind of MAME interface available called IEEE remotizer,
which could be useful for talking to external devices.
Here's a screenshot how HP basic looks in the emulator:
In there are also other pictures of HP-UX
booting in the emulator. the stuff required to boot HP-UX 9 is not
upstream yet (SCSI controller, MMU stuff, etc). Currently i'm mostly
alone working on the project, if anybody on this list feels like
contributing/helping you're welcome to join.
Regards
Sven
toggle quoted message
Show quoted text
On 08/22/2018 07:42 PM, garp6 wrote: hi,
Am looking for all the software related to the HP 70K MMS system, its
modules, calibration & analysis software and related ROM's.
Although it might be fanciful, the goal would be to have the HP 70K
MMS system running on a modern laptop using a USB-GPIB adapter, and to
also be able to upgrade any ROM's etc, for all of the MMS modules.
This does not preclude anyone who is able to run it on the old HP
computer systems, their help to modernize the HP 70K software suite
would be most welcome.
So wondering if we can collectively assemble a complete archive of any
HP 70K ?software, firmware, etc.?
To proceed, it would need a detailed examination of the original Rocky
Mountain Basic / HP Instrument Basic / HP Basic files needs to occur.
Then to port (or re-write) that software to some more modern computer
we can all use, perhaps Python, C, or VB or something else.
Would hopefully be a team effort, but would certainly be an Open
Project, having the original & the disassembled / reassembled HP 70K
files in an archive.
I worry that any remaining HP 70K software, on diskettes, ROMs',
personality cards, etc. will soon be tossed out, without an archive.
... The old timers that worked on this equipment won't be around forever.
The HP 70K hardware itself seems so useful, interesting and now
recently becoming available at affordable prices, it simply makes
sense to appeal for an HP 70K software archive to be actively
assembled; { along with any un-obtainable documentation }.
I have had some past experience reading and dis assembling /
re-writing old ROM code extracted from instrumentation & some
experience with old RMB & porting old HP Instrument Basic programs to
run on a newer (post HP) TransEra Basic platform using Win Xp.?
Anyway, the quest is for ?any and ?all ?HP 70K software, ROMware, etc.
to be placed in an open, freely downloadable ?archive.
thank you,
|
Re: HP 70 K MMS software, whole system, modules & ROM's ( including ... Hp 70909A, 70910A, etc.)
hi,
Am looking for all the software related to the HP 70K MMS system, its modules, calibration & analysis software and related ROM's.
Although it might be fanciful, the goal would be to have the HP 70K MMS system running on a modern laptop using a USB-GPIB adapter, and to also be able to upgrade any ROM's etc, for all of the MMS modules.
This does not preclude anyone who is able to run it on the old HP computer systems, their help to modernize the HP 70K software suite would be most welcome.
So wondering if we can collectively assemble a complete archive of any HP 70K ?software, firmware, etc.?
To proceed, it would need a detailed examination of the original Rocky Mountain Basic / HP Instrument Basic / HP Basic files needs to occur.
Then to port (or re-write) that software to some more modern computer we can all use, perhaps Python, C, or VB or something else.
Would hopefully be a team effort, but would certainly be an Open Project, having the original & the disassembled / reassembled HP 70K files in an archive.
I worry that any remaining HP 70K software, on diskettes, ROMs', personality cards, etc. will soon be tossed out, without an archive.
... The old timers that worked on this equipment won't be around forever.
The HP 70K hardware itself seems so useful, interesting and now recently becoming available at affordable prices, it simply makes sense to appeal for an HP 70K software archive to be actively assembled; { along with any un-obtainable documentation }.
I have had some past experience reading and dis assembling / re-writing old ROM code extracted from instrumentation & some experience with old RMB & porting old HP Instrument Basic programs to run on a newer (post HP) TransEra Basic platform using Win Xp.?
Anyway, the quest is for ?any and ?all ?HP 70K software, ROMware, etc. to be placed in an open, freely downloadable ?archive.
thank you,
|
Re: 8656B & Surge Suppressor
I like Kemet caps also, but there are lots of good brands. In general, anything you buy from Amazon, ebay and the like is often fake, rejected parts or bad. I stick to real distributors, Mouser, Digikey, Newark, Arrow, etc.
I use to do searches. They will show what the various prices are and who has stock. All the distributors now will sell small quantities online. For very small quantities, I find Digikey's shipping to be cheaper. There have been multiple discussions here about the "best" caps to use. It depends on the specific application. All the distributors have online sites that allow you to put in specs. capacitance, voltage rating, temp, size, tolerance, etc, and narrow down to what you need. I generally do that. Sometimes the "right" part just falls out of the search.
I use Surgex surge protectors, which are expensive but not MOV based. K9YC's site has lots of explanation as to why MOV based surge protectors have issues. I found them on eBay for a good price.
Regards, Mark W7MLG
On Wed, Aug 22, 2018 at 9:42 AM, Paul Bicknell < paul@...> wrote: > > Hi Chuck > > ? > > How about Kemet capacitors from the USA ? and I have just had exhalent service from Mouser as their distributer > > ? > > Happy customer ?from the UK > > ? > > ________________________________ > > From: [email protected] [mailto: [email protected]] On Behalf Of Chuck > Sent: 22 August 2018 06:26 > To: [email protected]> ? > > Subject: [HP-Agilent-Keysight-equipment] 8656B & Surge Suppressor > >Last time we had a power hit, last month, it took out the 5A fuse in the 8656B power supply and I don't want to have to replace it again. > Any Ideas??? > > Along with that I find that the 8656B has massive amounts of hum on the RF output.? The IFR says over 25-30 KCs worth of Deviation!!? I need to find some new power supply caps for it.? What should I look for and from whom to get them from.? I would like to stay away form the caps from china as they don't seem to have a good rep. to say the least! > > ?
|
Re: 8656B & Surge Suppressor
I buy only Nichicon if possible, but have also seen some insanely long lived caps from Cornell Dubliner in my 8753C.
Tam
---
With best regards
Tam HANNA (emailing on a BlackBerry PRIV)
Enjoy electronics? Join 11k other followers by visiting the Crazy Electronics Lab at Am 22. August 2018 18:42:44 MESZ schrieb Paul Bicknell <paul@...>:
Hi Chuck
?
How about Kemet capacitors from the USA??
and I have just had exhalent service from Mouser as their distributer?
?
Happy customer? from the UK
?
?
Well, I finally got my Sig Gen up and running again (!) and have a
question for you with a Bench setup.? What do you use for a surge
supressor for the entire bench??? I have two sig gens, a counter, a Tek
o'scope, a SA and a 3550 Audio stack.
Last time we had a power hit, last month, it took out the 5A fuse in
the 8656B power supply and I don't want to have to replace it again.
Along with that I find that the 8656B has massive amounts of hum on the
RF output.? The IFR says over 25-30 KCs worth of Deviation!!? I need
to find some new power supply caps for it.? What should I look for and
from whom to get them from.? I would like to stay away form the caps from
china as they don't seem to have a good rep. to say the least!
No virus found in this message.
Checked by AVG -
Version: 2016.0.8048 / Virus Database: 4793/15883 - Release Date: 08/14/18
|
Re: 8656B & Surge Suppressor
Chuck,
I have a Transtector 1101-424 silicon/MOV (Metal Oxide Varistor) transient protector in my lab.? These are fairly expensive but sometimes come up on eB for a decent price.? I use both the Transtector and LEA International products at my remote broadcast transmitter sites on anything from 120 to 480 volts single/three phase.? For spot transient protection throughout my house I use the Tripp-Lite SK3-0 and ULTRABLOK 428 120V MOV only based protectors.? I have watched their performance with a power line monitor and they seem to do a pretty good job for a very economical price.? And the added advantage is that you can simply plug them into AC outlets.
The difference between all of these devices is the type of internal protection approach used.? Most home type surge protectors simply use MOVs, a resistive device that lowers its resistance in response to increasing voltage.? These normally react in a "soft" fashion with a nonlinear decrease in resistance with as the voltage applied across them increases.? in addition their clamping action is normally somewhat higher than the normal applied voltage with the hard clamping typically occurring around 250-300 volts for a device rated for 120 VAC service.? For a good tutorial see .
The more expensive transient protectors designed for commercial & industrial also use utilize silicon solid-state devices to clamp transients in addition to the MOVs.? The positive aspect of this approach is that clamping action is faster (on the order of nanoseconds) as well as a more defined lower voltage clamp point.? In addition the manufacturers will also frequently employ small inductors in series with the AC lines to slow and reduce the amplitude of the incoming transient before it hits the protecting devices.? That is where the added expense comes in.
MOVs have one other "sneaker" parameter in that they will slowly degrade over time.? The degradation is not significant for the average user but if the protective device is used? over many years it is wise to check it for any reduced resistance or failures if transients are frequent as in high lightning prone areas.? When in use at a normal AC line voltage they still exhibit some resistance and are always passing a small amount of current.? This obviously causes a tiny amount of internal heating action which is probably conducive to the long-tern failure mechanism in them.
Overall, a MOV based device is the easiest and most economical approach especially the smaller plug-in types.? But it is worth surfing eB to see if one of the more bullte-proof units can be had for a song.? That is where I picked my unit up.
Greg
|
Re: 8656B & Surge Suppressor
Hi Chuck
?
How about Kemet capacitors from the USA??
and I have just had exhalent service from Mouser as their distributer?
?
Happy customer? from the UK
?
?
Well, I finally got my Sig Gen up and running again (!) and have a
question for you with a Bench setup.? What do you use for a surge
supressor for the entire bench??? I have two sig gens, a counter, a Tek
o'scope, a SA and a 3550 Audio stack.
Last time we had a power hit, last month, it took out the 5A fuse in
the 8656B power supply and I don't want to have to replace it again.
Along with that I find that the 8656B has massive amounts of hum on the
RF output.? The IFR says over 25-30 KCs worth of Deviation!!? I need
to find some new power supply caps for it.? What should I look for and
from whom to get them from.? I would like to stay away form the caps from
china as they don't seem to have a good rep. to say the least!
No virus found in this message.
Checked by AVG -
Version: 2016.0.8048 / Virus Database: 4793/15883 - Release Date: 08/14/18
|
Re: MSO 6054A: Firmware versions older than 6.20
I checked and my version is the one you list.? Is there a bug in that version?? What advantage is there to an older version?
|
Re: HP 6012B volt zero and current regulation
I compared the 6012B under load at 4 amps versus unloaded. Unloaded I had about 11 volts and loaded, if my calculations are correct it holds within 0.0003 if my memory is correct according to a 6 1/2 digit multi meter probing the output bus bars of the power supply. If it were 0.003 or even 0.03 I would be fine. I think the regulation works just fine from this test. As indicated earlier in this post it very well could be the capacitors on the output of this power supply that cause the overshoot I notice but only briefly, and this is with the power supply on and when I set it to a certain amperage value and when I suddenly put a load on it, it overshoots but only briefly before it comes right back. Interesting discussion though.
|
Re: 8656B & Surge Suppressor
This is what I use on my test bench to protect all my test gear.
TRIPP LITE LC1800 Line Conditioner?
It works flawlessly.? And it's more than just a surge suppressor because it also minimizes changes in? line voltage.? The line conditioner function is very busy during summertime brownouts.
BRgds....Frank
|
Re: HP 70 K software Hp 70909A vs 70910A
David Thank you for your input
?
So my question to all dues any one have
the receiver personality software or a method of copying it from
a 70900 local oscillator
?
Regards Paul B
?
?
I do have the receiver personality, which runs on, and came pre-loaded
on an 70900B module I purchased. I have not been successful at copying it off
the module.
Much of what can be done with the receiver personality can be done
manually. When using the spectrum analyzer as a receiver, you typically set the
span to zero, so that the RF module is not being swept. Then you tune to the
frequency you want to receive by setting the centre frequency.
The receiver personality lets you have more control over the gain of
the IF output, and lets you control channel filtering in the 70911A module,
which can¡¯t otherwise be directly controlled, as far as I know.
Largely, it¡¯s a convenience feature, as I personally use my
system as a front-end for an SDR, and tuning is pretty much all I need to do.
That firmware revision is for the 70900B module. The revision of the
receiver personality software I have is A.00.00
I believe that the receiver personality also requires the 70900B to
have the 512 option to allow it to have enough memory to store all the program
files.
toggle quoted message
Show quoted text
On Tue, Aug 21, 2018 at 3:05 PM, Paul Bicknell <paul@...>
wrote:
?
Hi David
?
Could you help me regarding the Receiver
Personality DLP?
Have you ever used the Receiver Personality program if so what are the
major advantages ?
?
You refer to the ?firmware revision 94120 [B.05.00].``is this for the local oscillator
?70900 or the 71910 analyser ?
?
You also say it was on a memory card and a
disk ?how much memory dues it require and can it be copied from a local
oscillator ?70900 and loaded onto another
?
Sorry for all the questions but I think
many are after the answers to the questions that I have asked
?
Regards Paul
?
Are you asking about the Receiver Personality DLP (Downloadable
Program) for the?HP 71910A wide-bandwidth receiver?
More information on this DLP can be found here:
Specifically, the details on how to install it can be found on page
1-31 of the second document.
There is a memory card version, and a LIF disk version, which requires
connecting a HP 9122 drive.
This personality requires?firmware revision 94120 [B.05.00].``
?
On Tue, Aug 21, 2018 at 1:21 PM, Paul Bicknell <paul@...>
wrote:
Hi rick
?
OK on the posting but please explain the
software you require
Is it to enhance the operation of the 70910A
?
?
Or is it to run on a computer system
?
or is it to up grade the ?local oscillator that
has the software to run the 70910? providing the revision is
late enough? to run your other components
?
also look up 70k user group
?
Regards Paul ?
?
?
hi there,
I would like to obtain software for the HP 70K system, including that for the
71910 70910 ?system & modules, SA, ROMS, etc.
Is there an archive for all of this ?
thank you,
rick
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?
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No virus found in this message.
Checked by AVG -
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|
Re: 8656B & Surge Suppressor
Hi Chuck,
I use a constant voltage transformer (CVT) to power my bench, which has the added advantage of providing galvanic isolation too. Just be aware that certain CVTs produce more of a square wave when the secondary saturates, the true-sine CVTs appear to be a bit more expensive! Here¡¯s one I found on fleabay?
and it¡¯s in the US too.
good luck!
|
Well, I finally got my Sig Gen up and running again (!) and have a question
for you with a Bench setup.? What do you use for a surge supressor for the
entire bench??? I have two sig gens, a counter, a Tek o'scope, a SA and a
3550 Audio stack.
?
Last time we had a power hit, last month, it took out the 5A fuse in the
8656B power supply and I don't want to have to replace it again.
?
Any Ideas???
?
Along with that I find that the 8656B has massive amounts of hum on the RF
output.? The IFR says over 25-30 KCs worth of Deviation!!? I need to
find some new power supply caps for it.? What should I look for and from
whom to get them from.? I would like to stay away form the caps from china
as they don't seem to have a good rep. to say the least!
?
Thanks,
?
Chuck McClurg
Communications, Ltd.
Carson City, NV
N7UVZ
?
|
Jeremy Nichols
Bill Riches
Paul Bicknell