Re: What's this mains plug with live/neutral horizontal when earth is at the top?
Do note, though, that I¡¯ve seen designs that have an input transformer with a 208V tap, and can be wire-strapped for either 208V or 240V operation.
Now that I¡¯ve mentioned it, yours won¡¯t have such a tap, or will be already strapped to 240V. Otherwise, of course, you¡¯d have the oddball device with such a tapped input transformer and it¡¯d be set for 208V, requiring restrapping for 240V ¨C
but such things never happen when you are prepared for them.
Cheers, Kuba
2 nov. 2018 kl. 20:25 skrev Kuba Ober < kuba@...>:
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That is a ¡°200V¡± plug, with two phases (lives, hots) on the flat blades, and earth on the pin. In the US, the green conductor color is protective earth, white is neutral, and then black, red, blue are lives/hots/phases.
3-phase devices expect 120 degrees between phases, 2-phase devices must accept either 120 or 180 degrees.
So the cable should not have a white conductor. It will most likely have Black, Red, Green for two phases and protective earth. It should be fine to connect it to L, N, and PE respectively - with a caveat as follows: In the US, the phase-neutral
voltage is 120V for such 200V power sources. If there would be some varistors or other overvoltage protection devices between each phase and earth, they might trigger when presented with double than expected voltage.?
So if you plug it in and it blows the fuses, you will want to locate and temporarily remove the input overvoltage protection devices and retry. Or power it up first with an isolation transformer, with the center tap of the secondary connected
to earth, and if it works thus but not when plugged directly into the mains, then you¡¯ll know why. It¡¯s not highly likely that such overvoltage protectors would be present but you never know. Murphy¡¯s law tells me that if I mention them, they¡¯ll be absent,
but if I gloss over them, you¡¯ll find them there all right :)
I wrote ¡°200V¡± because in the US this may be either 208V or 240V, and all reasonable devices with such a plug should tolerate either voltage, and most certainly will not be designed to accept only 208V but not 240V.?
In 3-phase supplies, with (R,S,T)-N at 120V and 120 degrees apart, i.e. many commercial locations, the receptacles for those plugs are simply wired between any two phases, so there¡¯s two hots/lives and earth presented to the plug. That¡¯s 208V
nominal between phases.
In typical ¡°domestic-style¡± (plenty commercial locations are that way as well, though) split-phase supplies, the two phases are 180 degrees apart, and there¡¯s 240V between them, and 120V between each and earth.?
I hope that gives you enough information to safely use your supply.
Cheers, Kuba
2 nov. 2018 kl. 19:23 skrev Dr. David Kirkby from Kirkby Microwave Ltd < drkirkby@...>:
Sorry, this is a bit off-topic for the HP/Agilent list, but I'm hoping someone, (probably from the USA), can help me.
I bought a Gamma high-voltage regulated power supply (0-15 kV, 0-12 mA).
from eBay.
The UK seller said it is 120 V, so needs a transformer to run from the UK mains, The mains voltage here is supposed to be 230 -6%/+10%. But I have my suspicions that the UK seller may be wrong, as the US manufacturer sent me a manual on the power supply, which
says its 220 VAC. But they wrote it is a 20-year old custom design. (It's entirely possible someone has changed things.)
Am I right in thinking the plug attached to this is not designed for 120 V use, but instead for 240 V? When I look at it, with the earth pin at the top, the live/neutral are horizontal. The live/neutal pins are approximate 1/4" across, with approximately 1/2"
between them, so there is approximately 1" between the two furthest edges of the pins.
I know one can always start at a low voltage, and I have a variac. But I'm also aware in some cases that using too low a voltage can damage equipment. So if this thing is supposed to take 220 V, I'd rather not start with 120 V.
The manual has no tolerance for the mains voltage - it just says 220 VAC. My own voltage is typically 235 V.
Some time ago the voltage was logged here for a period of 4 days and peaked at 255 VAC (RMS value), but the transformer taps have since been changed, and the voltage dropped 5%, so I think it might peak at 243 VAC RMS - and that would only be very occasionally.
One other thing. When I cut this mains plug off, what colour cables would I expect to see, and what would be live and neutral?
Here in the UK, neutral is very close in voltage to the earth wire - ideally, it is zero. Would there be an equivalent wire colour on this mains lead?
This thing can produce 15 kV at 12 mA, which I would guess would give someone a nasty burn at the very least, and could even be fatal. But my biggest concern at the minute is how to get power to this.?
Dave
--
Dr David Kirkby Ph.D C.Eng MIET
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, CHELMSFORD, Essex, CM3 6DT, United Kingdom.
Registered in England and Wales as company number 08914892
Tel 01621-680100 / +44 1621-680100
<Whats-this-mains-plug.jpg>
|
Re: What's this mains plug with live/neutral horizontal when earth is at the top?
That is a ¡°200V¡± plug, with two phases (lives, hots) on the flat blades, and earth on the pin. In the US, the green conductor color is protective earth, white is neutral, and then black, red, blue are lives/hots/phases.
3-phase devices expect 120 degrees between phases, 2-phase devices must accept either 120 or 180 degrees.
So the cable should not have a white conductor. It will most likely have Black, Red, Green for two phases and protective earth. It should be fine to connect it to L, N, and PE respectively - with a caveat as follows: In the US, the phase-neutral voltage is 120V for such 200V power sources. If there would be some varistors or other overvoltage protection devices between each phase and earth, they might trigger when presented with double than expected voltage.?
So if you plug it in and it blows the fuses, you will want to locate and temporarily remove the input overvoltage protection devices and retry. Or power it up first with an isolation transformer, with the center tap of the secondary connected to earth, and if it works thus but not when plugged directly into the mains, then you¡¯ll know why. It¡¯s not highly likely that such overvoltage protectors would be present but you never know. Murphy¡¯s law tells me that if I mention them, they¡¯ll be absent, but if I gloss over them, you¡¯ll find them there all right :)
I wrote ¡°200V¡± because in the US this may be either 208V or 240V, and all reasonable devices with such a plug should tolerate either voltage, and most certainly will not be designed to accept only 208V but not 240V.?
In 3-phase supplies, with (R,S,T)-N at 120V and 120 degrees apart, i.e. many commercial locations, the receptacles for those plugs are simply wired between any two phases, so there¡¯s two hots/lives and earth presented to the plug. That¡¯s 208V nominal between phases.
In typical ¡°domestic-style¡± (plenty commercial locations are that way as well, though) split-phase supplies, the two phases are 180 degrees apart, and there¡¯s 240V between them, and 120V between each and earth.?
I hope that gives you enough information to safely use your supply.
Cheers, Kuba 2 nov. 2018 kl. 19:23 skrev Dr. David Kirkby from Kirkby Microwave Ltd < drkirkby@...>:
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Show quoted text
Sorry, this is a bit off-topic for the HP/Agilent list, but I'm hoping someone, (probably from the USA), can help me.
I bought a Gamma high-voltage regulated power supply (0-15 kV, 0-12 mA).
from eBay.
The UK seller said it is 120 V, so needs a transformer to run from the UK mains, The mains voltage here is supposed to be 230 -6%/+10%. But I have my suspicions that the UK seller may be wrong, as the US manufacturer sent me a manual on the power supply, which says its 220 VAC. But they wrote it is a 20-year old custom design. (It's entirely possible someone has changed things.)
Am I right in thinking the plug attached to this is not designed for 120 V use, but instead for 240 V? When I look at it, with the earth pin at the top, the live/neutral are horizontal. The live/neutal pins are approximate 1/4" across, with approximately 1/2" between them, so there is approximately 1" between the two furthest edges of the pins.
I know one can always start at a low voltage, and I have a variac. But I'm also aware in some cases that using too low a voltage can damage equipment. So if this thing is supposed to take 220 V, I'd rather not start with 120 V.
The manual has no tolerance for the mains voltage - it just says 220 VAC. My own voltage is typically 235 V.
Some time ago the voltage was logged here for a period of 4 days and peaked at 255 VAC (RMS value), but the transformer taps have since been changed, and the voltage dropped 5%, so I think it might peak at 243 VAC RMS - and that would only be very occasionally.
One other thing. When I cut this mains plug off, what colour cables would I expect to see, and what would be live and neutral?
Here in the UK, neutral is very close in voltage to the earth wire - ideally, it is zero. Would there be an equivalent wire colour on this mains lead?
This thing can produce 15 kV at 12 mA, which I would guess would give someone a nasty burn at the very least, and could even be fatal. But my biggest concern at the minute is how to get power to this.?
Dave
-- Dr David Kirkby Ph.D C.Eng MIET
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, CHELMSFORD, Essex, CM3 6DT, United Kingdom.
Registered in England and Wales as company number 08914892
Tel 01621-680100 / +44 1621-680100
<Whats-this-mains-plug.jpg>
|
Re: What's this mains plug with live/neutral horizontal when earth is at the top?
You may, however, find in the cord either a white wire, black wire, and a green wire; or a blue wire a brown wire and a green wire.
If the former, white is neutral, black is live, and green is ground. If the latter, blue is live, brown is neutral, and green is ground.
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On Nov 2, 2018, at 19:35, Peter Gottlieb < hpnpilot@...> wrote: Oh, and it¡¯s wired as 240 center tapped, so the hot leads are interchangeable and there should be a green earth lead. No neutral in this case, with this 6-15 plug, here in the US power system.? On Nov 2, 2018, at 7:23 PM, Dr. David Kirkby from Kirkby Microwave Ltd < drkirkby@...> wrote: Sorry, this is a bit off-topic for the HP/Agilent list, but I'm hoping someone, (probably from the USA), can help me.
I bought a Gamma high-voltage regulated power supply (0-15 kV, 0-12 mA).
from eBay.
The UK seller said it is 120 V, so needs a transformer to run from the UK mains, The mains voltage here is supposed to be 230 -6%/+10%. But I have my suspicions that the UK seller may be wrong, as the US manufacturer sent me a manual on the power supply, which says its 220 VAC. But they wrote it is a 20-year old custom design. (It's entirely possible someone has changed things.)
Am I right in thinking the plug attached to this is not designed for 120 V use, but instead for 240 V? When I look at it, with the earth pin at the top, the live/neutral are horizontal. The live/neutal pins are approximate 1/4" across, with approximately 1/2" between them, so there is approximately 1" between the two furthest edges of the pins.
I know one can always start at a low voltage, and I have a variac. But I'm also aware in some cases that using too low a voltage can damage equipment. So if this thing is supposed to take 220 V, I'd rather not start with 120 V.
The manual has no tolerance for the mains voltage - it just says 220 VAC. My own voltage is typically 235 V.
Some time ago the voltage was logged here for a period of 4 days and peaked at 255 VAC (RMS value), but the transformer taps have since been changed, and the voltage dropped 5%, so I think it might peak at 243 VAC RMS - and that would only be very occasionally.
One other thing. When I cut this mains plug off, what colour cables would I expect to see, and what would be live and neutral?
Here in the UK, neutral is very close in voltage to the earth wire - ideally, it is zero. Would there be an equivalent wire colour on this mains lead?
This thing can produce 15 kV at 12 mA, which I would guess would give someone a nasty burn at the very least, and could even be fatal. But my biggest concern at the minute is how to get power to this.?
Dave
-- Dr David Kirkby Ph.D C.Eng MIET
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, CHELMSFORD, Essex, CM3 6DT, United Kingdom.
Registered in England and Wales as company number 08914892
Tel 01621-680100 / +44 1621-680100
<Whats-this-mains-plug.jpg>
|
Re: What's this mains plug with live/neutral horizontal when earth is at the top?
Oh, and it¡¯s wired as 240 center tapped, so the hot leads are interchangeable and there should be a green earth lead. No neutral in this case, with this 6-15 plug, here in the US power system.?
toggle quoted message
Show quoted text
On Nov 2, 2018, at 7:23 PM, Dr. David Kirkby from Kirkby Microwave Ltd < drkirkby@...> wrote: Sorry, this is a bit off-topic for the HP/Agilent list, but I'm hoping someone, (probably from the USA), can help me.
I bought a Gamma high-voltage regulated power supply (0-15 kV, 0-12 mA).
from eBay.
The UK seller said it is 120 V, so needs a transformer to run from the UK mains, The mains voltage here is supposed to be 230 -6%/+10%. But I have my suspicions that the UK seller may be wrong, as the US manufacturer sent me a manual on the power supply, which says its 220 VAC. But they wrote it is a 20-year old custom design. (It's entirely possible someone has changed things.)
Am I right in thinking the plug attached to this is not designed for 120 V use, but instead for 240 V? When I look at it, with the earth pin at the top, the live/neutral are horizontal. The live/neutal pins are approximate 1/4" across, with approximately 1/2" between them, so there is approximately 1" between the two furthest edges of the pins.
I know one can always start at a low voltage, and I have a variac. But I'm also aware in some cases that using too low a voltage can damage equipment. So if this thing is supposed to take 220 V, I'd rather not start with 120 V.
The manual has no tolerance for the mains voltage - it just says 220 VAC. My own voltage is typically 235 V.
Some time ago the voltage was logged here for a period of 4 days and peaked at 255 VAC (RMS value), but the transformer taps have since been changed, and the voltage dropped 5%, so I think it might peak at 243 VAC RMS - and that would only be very occasionally.
One other thing. When I cut this mains plug off, what colour cables would I expect to see, and what would be live and neutral?
Here in the UK, neutral is very close in voltage to the earth wire - ideally, it is zero. Would there be an equivalent wire colour on this mains lead?
This thing can produce 15 kV at 12 mA, which I would guess would give someone a nasty burn at the very least, and could even be fatal. But my biggest concern at the minute is how to get power to this.?
Dave
-- Dr David Kirkby Ph.D C.Eng MIET
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, CHELMSFORD, Essex, CM3 6DT, United Kingdom.
Registered in England and Wales as company number 08914892
Tel 01621-680100 / +44 1621-680100
<Whats-this-mains-plug.jpg>
|
Re: What's this mains plug with live/neutral horizontal when earth is at the top?
That is a 240 volt 15 amp grounding plug.?
The mains voltage has been increasing, it was 110-115 for a while (220-230) but now is nominal 120 (240). I don¡¯t know what that supply can handle but those specs have been very loosely-goosey from manufacturers for a long time.?
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On Nov 2, 2018, at 7:23 PM, Dr. David Kirkby from Kirkby Microwave Ltd < drkirkby@...> wrote: Sorry, this is a bit off-topic for the HP/Agilent list, but I'm hoping someone, (probably from the USA), can help me.
I bought a Gamma high-voltage regulated power supply (0-15 kV, 0-12 mA).
from eBay.
The UK seller said it is 120 V, so needs a transformer to run from the UK mains, The mains voltage here is supposed to be 230 -6%/+10%. But I have my suspicions that the UK seller may be wrong, as the US manufacturer sent me a manual on the power supply, which says its 220 VAC. But they wrote it is a 20-year old custom design. (It's entirely possible someone has changed things.)
Am I right in thinking the plug attached to this is not designed for 120 V use, but instead for 240 V? When I look at it, with the earth pin at the top, the live/neutral are horizontal. The live/neutal pins are approximate 1/4" across, with approximately 1/2" between them, so there is approximately 1" between the two furthest edges of the pins.
I know one can always start at a low voltage, and I have a variac. But I'm also aware in some cases that using too low a voltage can damage equipment. So if this thing is supposed to take 220 V, I'd rather not start with 120 V.
The manual has no tolerance for the mains voltage - it just says 220 VAC. My own voltage is typically 235 V.
Some time ago the voltage was logged here for a period of 4 days and peaked at 255 VAC (RMS value), but the transformer taps have since been changed, and the voltage dropped 5%, so I think it might peak at 243 VAC RMS - and that would only be very occasionally.
One other thing. When I cut this mains plug off, what colour cables would I expect to see, and what would be live and neutral?
Here in the UK, neutral is very close in voltage to the earth wire - ideally, it is zero. Would there be an equivalent wire colour on this mains lead?
This thing can produce 15 kV at 12 mA, which I would guess would give someone a nasty burn at the very least, and could even be fatal. But my biggest concern at the minute is how to get power to this.?
Dave
-- Dr David Kirkby Ph.D C.Eng MIET
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, CHELMSFORD, Essex, CM3 6DT, United Kingdom.
Registered in England and Wales as company number 08914892
Tel 01621-680100 / +44 1621-680100
<Whats-this-mains-plug.jpg>
|
What's this mains plug with live/neutral horizontal when earth is at the top?
Dr. David Kirkby from Kirkby Microwave Ltd
Sorry, this is a bit off-topic for the HP/Agilent list, but I'm hoping someone, (probably from the USA), can help me.
I bought a Gamma high-voltage regulated power supply (0-15 kV, 0-12 mA).
from eBay.
The UK seller said it is 120 V, so needs a transformer to run from the UK mains, The mains voltage here is supposed to be 230 -6%/+10%. But I have my suspicions that the UK seller may be wrong, as the US manufacturer sent me a manual on the power supply, which says its 220 VAC. But they wrote it is a 20-year old custom design. (It's entirely possible someone has changed things.)
Am I right in thinking the plug attached to this is not designed for 120 V use, but instead for 240 V? When I look at it, with the earth pin at the top, the live/neutral are horizontal. The live/neutal pins are approximate 1/4" across, with approximately 1/2" between them, so there is approximately 1" between the two furthest edges of the pins.
I know one can always start at a low voltage, and I have a variac. But I'm also aware in some cases that using too low a voltage can damage equipment. So if this thing is supposed to take 220 V, I'd rather not start with 120 V.
The manual has no tolerance for the mains voltage - it just says 220 VAC. My own voltage is typically 235 V.
Some time ago the voltage was logged here for a period of 4 days and peaked at 255 VAC (RMS value), but the transformer taps have since been changed, and the voltage dropped 5%, so I think it might peak at 243 VAC RMS - and that would only be very occasionally.
One other thing. When I cut this mains plug off, what colour cables would I expect to see, and what would be live and neutral?
Here in the UK, neutral is very close in voltage to the earth wire - ideally, it is zero. Would there be an equivalent wire colour on this mains lead?
This thing can produce 15 kV at 12 mA, which I would guess would give someone a nasty burn at the very least, and could even be fatal. But my biggest concern at the minute is how to get power to this.?
Dave
-- Dr David Kirkby Ph.D C.Eng MIET
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, CHELMSFORD, Essex, CM3 6DT, United Kingdom.
Registered in England and Wales as company number 08914892
Tel 01621-680100 / +44 1621-680100
|
Hi all?
I am looking for a?schematics diagram for the HP54522A oscilloscope I have look all the usual sites none there. If anyone has the clip for this oscilloscope I would be interested mostly for the flash memory and main memory.
Thanks for your help?
Gordon GM1THS?
|
It takes KO4BB a few days? sometimes to clear the upload ques. He will likely get to it this weekend
Still the best free manual repository around IMO
Dave
manuals@...
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On 11/2/2018 10:55 AM, Paul Birkel wrote: It's not showing up in the search function in "Manuals". At least not yet
... is there a direct link that you can share?
Is it perhaps "Agilent hp Basic for windows Operator
Manual-E2060-90001hpbasic" which is (for the moment, I guess) found under
"/07 Recent Uploads"?
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of hardyhansendk
via Groups.Io
Sent: Wednesday, October 31, 2018 10:15 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP Basic help
HP Basic for windows user guide
Hardy
-----Oprindelig meddelelse-----
Fra: [email protected]
[mailto:[email protected]] P? vegne af Artekmedia
Sendt: 1. november 2018 03:09
Til: [email protected]
Emne: Re: [HP-Agilent-Keysight-equipment] HP Basic help
Up loaded what?
On 10/31/2018 9:37 PM, Dan Rae wrote:
On 10/31/2018 6:32 PM, hardyhansendk via Groups.Io wrote:
Hi
Have uploaded it to didiers
Regards
Hardy
Thanks Hardy!
Dan
--
Dave
Manuals@...
www.ArtekManuals.com
|
It's not showing up in the search function in "Manuals". At least not yet
... is there a direct link that you can share?
Is it perhaps "Agilent hp Basic for windows Operator
Manual-E2060-90001hpbasic" which is (for the moment, I guess) found under
"/07 Recent Uploads"?
toggle quoted message
Show quoted text
-----Original Message----- From: [email protected][mailto: [email protected]] On Behalf Of hardyhansendk via Groups.Io Sent: Wednesday, October 31, 2018 10:15 PM To: [email protected]Subject: Re: [HP-Agilent-Keysight-equipment] HP Basic help HP Basic for windows user guide Hardy -----Oprindelig meddelelse----- Fra: [email protected][mailto: [email protected]] P? vegne af Artekmedia Sendt: 1. november 2018 03:09 Til: [email protected]Emne: Re: [HP-Agilent-Keysight-equipment] HP Basic help Up loaded what? On 10/31/2018 9:37 PM, Dan Rae wrote: On 10/31/2018 6:32 PM, hardyhansendk via Groups.Io wrote:
Hi
Have uploaded it to didiers
Regards
Hardy
Thanks Hardy!
Dan
-- Dave Manuals@... www.ArtekManuals.com --- Denne mail er kontrolleret for vira af AVG.
|
Re: Part Required - IC - 1820-1694
Part found!
Thanks to all for your help.
Wayne
|
Re: HP 9122C & 9122D floppy drive units - adapt to use a contemporary (3.5" 1.4MB) diskette drive?
Richard,
I would be interested in one.? I'm in north west New Jersey.
Thanks,
Mike
N2LYM
|
Re: HP 9122C & 9122D floppy drive units - adapt to use a contemporary (3.5" 1.4MB) diskette drive?
Hi, jumping in a bit late here but I had a 9122C arrive today which I was intending to add to my 8757C/8350B setup and I've seen pretty much the same issues you did - but I just fixed them (I think!)
Both drives made the 'right' sounds when powered up but forewarned by this thread I took the covers off to check for gummed up mechanical bits before pushing disks in.
It all looked absolutely clean and good so I tried some disks in it and saw much the same as you describe, one drive sort of tried to write data but ultimately failed and the second one wasn't interested at all.
Initializing disks failed on both a number of times but then one seemed to complete and then did then read and write correctly.
I noticed that some disks appeared to try and format a couple of times and seemed ok but then refused to write and some tried four cycles and the 8757 reported a 'hardware failure' from the initialization screen.
As this seemed to change when simply retrying the process it looked as if the drives themselves were changing so even though they looked fine I cleaned heads, slide rod and lead-screws (IPA) and lubed slide and lead-screw (sewing machine oil) and instantly they both seem fine, I have just formatted and used 3 or 4 different disks in both with no issues.
Might be worth a try?
Adrian
|
Re: HP-3466A range switches?
On Thu, Nov 1, 2018 at 8:46 PM John Griessen <john@...> wrote:
On 11/1/18 2:25 PM, Francesco Messineo wrote:
The 3466A is working again. Do you mean a 3456A DVM? I have two of those...very reliable and nostalgia for a first
manufacturing job where one was used to do in circuit tests.bl
Nope, 3466A, little DVM of the late '70s, very reliable and portable enough to go around in the lab, battery rechargeable option. I also have a 3456A but I use it only for the precision jobs :)
|
Re: HP-3466A range switches?
On 11/1/18 2:25 PM, Francesco Messineo wrote: The 3466A is working again. Do you mean a 3456A DVM? I have two of those...very reliable and nostalgia for a first manufacturing job where one was used to do in circuit tests.
|
Part Required - IC - 1820-1694
Hi,
I'm repairing an HP counter (5305), and it looks like this IC (HP part number 1820-1694) is acting up when it gets warm.
I cannot find it on the HP Part Substitution lists - does anyone know if a commercial part number exists, or have one of these that they would be willing to part with?
Regards,
Wayne
|
Re: HP-3466A range switches?
Never mind, looks like the short was caused by some metal debris that I've found under one of the switches. Who knows how they got there. Too bad I removed all the switches before finding that out. The 3466A is working again. On Thu, Nov 1, 2018 at 6:15 PM Francesco Messineo <francesco.messineo@...> wrote:
Hello everybody!
My old and trusty 3466A developed a problem! It's the multimeter I use
more often, I've got the battery option (usually I need to change the
batteries every 10 years, and yes, I have this one for more than 20
years now).
The problem is that it developed an internal short in one of the range
switches, so manual ranges don't work anymore (but one position). I
haven't yet removed all the range switches to check which one failed.
Selecting the auto-range works well in Voltage and Resistance modes,
but as you might know if you have a similar model, the Current measure
works only on manual ranges, so I'd very much fix it if I can.
Now, I might be able to fix the switches if they can be opened, but
I'm also asking if anyone has a complete range switch assembly
(switches from S7 to S14, all coupled) from a parts unit that I can
buy.
Thanks in advance
Frank
|
Hello everybody!
My old and trusty 3466A developed a problem! It's the multimeter I use
more often, I've got the battery option (usually I need to change the
batteries every 10 years, and yes, I have this one for more than 20
years now).
The problem is that it developed an internal short in one of the range
switches, so manual ranges don't work anymore (but one position). I
haven't yet removed all the range switches to check which one failed.
Selecting the auto-range works well in Voltage and Resistance modes,
but as you might know if you have a similar model, the Current measure
works only on manual ranges, so I'd very much fix it if I can.
Now, I might be able to fix the switches if they can be opened, but
I'm also asking if anyone has a complete range switch assembly
(switches from S7 to S14, all coupled) from a parts unit that I can
buy.
Thanks in advance
Frank
|
Re: HP 9122C & 9122D floppy drive units - adapt to use a contemporary (3.5" 1.4MB) diskette drive?
Short answer yes it is possible.? There is however an issue if the 85 in question is an 85A.? The 9122 devices follow the SS/80 command standard which was never formally supported on the 85A, the mass storage ROM for 85A only supports Amigo devices like 9121 and 9895.? The 85B had an extended mass storage ROM that supports SS/80 devices, but it is dependent on a couple ROMs that are built into the 85B.? The solution that is available now is in the form of ROM cards that take EPROMs? so you can burn the images of the 85B Mass Storage, Electronic Disk and Extended Mass Storage into EPROMs and it will work just fine in an 85A. ? When I got a 85A one of the first things I did was build a ROM card primarily for this purpose, and there is at least one other design.? Information about my designs can be found at <> there are two similar designs the first was designed specifically for 85A, but when I got an 86B I found it was not as flexible as I had planned so I created a modified version. ? I have never got around to laying out a PCB for either of these.?? At you will find information about another design and the creator of this one does produce PCB as well as assembled units periodically.
Paul.
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On 2018-11-01 11:06 AM, nigel adams wrote: Dear Friends of the supreme knowledge,
I have a couple of the single/double FDD/HDD variations of this style of unit.
My question is if anyone knows if they can be used with the HP85 computer...?
What do I need, is there any special s/w required and if so does anyone know where to source it.
Essentially I want to use these in place of the little tape drives internal to the HP85 which are past their best.
All help advice welcome..
Regards
Nigel
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Paul Berger
Sent: 31 October 2018 01:09
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 9122C & 9122D floppy drive units - adapt to use a contemporary (3.5" 1.4MB) diskette drive?
Further to my previous comments the two drive I modified to work on a
9122C are a Panasonic JU-257A606P and a YE Data YD-702D-6037D.? One
thing you may encounter there are later versions of both of these drives
that have less configuration options and will not be suitable.? On the
YE Data drive I had to put a wire jumper on the board to get all the
signals out that are required, I believe I may have had to do that with
the Panasonic drive as well.? I happened to have several 1.44 diskette
drives handy to experiment with.? You will probably have better luck
with older drives, it seems a lot of the more recent ones are tailored
for PC and have little in the way on configuration options.? The HP
drives also have the power integrated into the signal cable so I made up
a little interposer to go between the cable and the drive to break out
the power and also to remap some of the pins.
The service guide for the 9122C can be found at
and it contains a pinout of the drive cable connector which can help
guide you to adapting a drive.
While I know nothing about the instrument you are trying to connect to,
it may be that it is trying to format the diskettes at 256 bytes /
sector and if the diskettes have been formatted differently before it
may take a few tries before it is successful, bulk erasing the diskette
first can be helpful for this.
Paul.
On 2018-10-30 7:52 PM, Paul Berger wrote:
With a little work certain 1.44 drives can be made to work in a 9122C
the usual stumbling block is the controller in the 9122 wants to see
the ready signal, but I did manage to make a couple drives work, but
don't have the models handy.
The 9122D is a different story, it uses 720K drives that turn at 600
RPM and unlike most other 3.5 diskette drives.? There where two
versions of drives used. The earlier models used a full high drive
with a square eject button on the bottom right of the drive, about the
only place you can get replacements for this drive is from other
9122S/D units or there where also a couple disk/ diskette combo units
that used these drives.? The newer version is a half high drive with a
rectangular eject button at the bottom right, this drive was used in a
lot of HP equipment so replacements are easier to find.? One of the
prevalent problems with these drives and especially the full high
versions is lubricants used on the load/eject mechanism dry and
becomes gummy and the diskettes do not load or eject properly and it
is dangerous because the upper head may not retract properly and if
you pull out the diskette when it is like this the upper head will
come out with it.? I would strongly recommend you open the units and
do a general inspect, clean and lube.
Paul.
On 2018-10-30 7:39 PM, David Feldman via Groups.Io wrote:
I ended up with both HP 9122C and 9122D (dual floppy drive) units.
Both are recognized by my 8753 network analyzer (up to the point that
setting incorrect GPIB address and setting incorrect disc/volume
number has the expected error message results), all four drives make
familiar sounds during power-up and normal operation, however, only
one of the drives (in the 9122C) can read a diskette (list files on
the media), and none can write or initialize diskettes. I am
uncertain whether the onboard controllers are fully functional, but
both appear complete and physically undamaged.
My question is this - can a contemporary (i.e., a 3-1/2" 1.4MB floppy
drive) be adapted for use in either of these units? The 9122C uses a
single (0.05" pitch) ribbon cable between the drives and the
controller board; the 9122D has a somewhat narrower (0.05" pitch)
ribbon cable and a 4-pin power connector. None of the connectors are
identical to those used in contemporary floppy drives. I haven't
looked for/at service documentation (yet). My last exposure to floppy
drive equipment (at engineering, hardware and firmware level) was in
the mid-late 1970s (!), so I'd not be adverse to a modest engineering
project if there's a sign that this sort of thing has been
successfully attempted in the past.
My other question - do you happen to have any drives (of either type)
you'd be willing to part with?
Thanks,
Dave
|
Re: HP 9122C & 9122D floppy drive units - adapt to use a contemporary (3.5" 1.4MB) diskette drive?
Dear Friends of the supreme knowledge,
I have a couple of the single/double FDD/HDD variations of this style of unit.
My question is if anyone knows if they can be used with the HP85 computer...?
What do I need, is there any special s/w required and if so does anyone know where to source it.
Essentially I want to use these in place of the little tape drives internal to the HP85 which are past their best.
All help advice welcome..
Regards
Nigel
toggle quoted message
Show quoted text
-----Original Message----- From: [email protected] [mailto: [email protected]] On Behalf Of Paul Berger Sent: 31 October 2018 01:09 To: [email protected]Subject: Re: [HP-Agilent-Keysight-equipment] HP 9122C & 9122D floppy drive units - adapt to use a contemporary (3.5" 1.4MB) diskette drive? Further to my previous comments the two drive I modified to work on a 9122C are a Panasonic JU-257A606P and a YE Data YD-702D-6037D.? One thing you may encounter there are later versions of both of these drives that have less configuration options and will not be suitable.? On the YE Data drive I had to put a wire jumper on the board to get all the signals out that are required, I believe I may have had to do that with the Panasonic drive as well.? I happened to have several 1.44 diskette drives handy to experiment with.? You will probably have better luck with older drives, it seems a lot of the more recent ones are tailored for PC and have little in the way on configuration options.? The HP drives also have the power integrated into the signal cable so I made up a little interposer to go between the cable and the drive to break out the power and also to remap some of the pins. The service guide for the 9122C can be found at and it contains a pinout of the drive cable connector which can help guide you to adapting a drive. While I know nothing about the instrument you are trying to connect to, it may be that it is trying to format the diskettes at 256 bytes / sector and if the diskettes have been formatted differently before it may take a few tries before it is successful, bulk erasing the diskette first can be helpful for this. Paul. On 2018-10-30 7:52 PM, Paul Berger wrote: With a little work certain 1.44 drives can be made to work in a 9122C
the usual stumbling block is the controller in the 9122 wants to see
the ready signal, but I did manage to make a couple drives work, but
don't have the models handy.
The 9122D is a different story, it uses 720K drives that turn at 600
RPM and unlike most other 3.5 diskette drives.? There where two
versions of drives used. The earlier models used a full high drive
with a square eject button on the bottom right of the drive, about the
only place you can get replacements for this drive is from other
9122S/D units or there where also a couple disk/ diskette combo units
that used these drives.? The newer version is a half high drive with a
rectangular eject button at the bottom right, this drive was used in a
lot of HP equipment so replacements are easier to find.? One of the
prevalent problems with these drives and especially the full high
versions is lubricants used on the load/eject mechanism dry and
becomes gummy and the diskettes do not load or eject properly and it
is dangerous because the upper head may not retract properly and if
you pull out the diskette when it is like this the upper head will
come out with it.? I would strongly recommend you open the units and
do a general inspect, clean and lube.
Paul.
On 2018-10-30 7:39 PM, David Feldman via Groups.Io wrote:
I ended up with both HP 9122C and 9122D (dual floppy drive) units.
Both are recognized by my 8753 network analyzer (up to the point that
setting incorrect GPIB address and setting incorrect disc/volume
number has the expected error message results), all four drives make
familiar sounds during power-up and normal operation, however, only
one of the drives (in the 9122C) can read a diskette (list files on
the media), and none can write or initialize diskettes. I am
uncertain whether the onboard controllers are fully functional, but
both appear complete and physically undamaged.
My question is this - can a contemporary (i.e., a 3-1/2" 1.4MB floppy
drive) be adapted for use in either of these units? The 9122C uses a
single (0.05" pitch) ribbon cable between the drives and the
controller board; the 9122D has a somewhat narrower (0.05" pitch)
ribbon cable and a 4-pin power connector. None of the connectors are
identical to those used in contemporary floppy drives. I haven't
looked for/at service documentation (yet). My last exposure to floppy
drive equipment (at engineering, hardware and firmware level) was in
the mid-late 1970s (!), so I'd not be adverse to a modest engineering
project if there's a sign that this sort of thing has been
successfully attempted in the past.
My other question - do you happen to have any drives (of either type)
you'd be willing to part with?
Thanks,
Dave
|
HP Basic for windows user guide Hardy -----Oprindelig meddelelse----- Fra: [email protected][mailto: [email protected]] P? vegne af Artekmedia Sendt: 1. november 2018 03:09 Til: [email protected]Emne: Re: [HP-Agilent-Keysight-equipment] HP Basic help Up loaded what?
On 10/31/2018 9:37 PM, Dan Rae wrote: On 10/31/2018 6:32 PM, hardyhansendk via Groups.Io wrote:
Hi
Have uploaded it to didiers
Regards
Hardy
Thanks Hardy!
Dan
--
Dave
Manuals@...
www.ArtekManuals.com
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