|
Well, I was wrong and Robert corrected me. What I thought were System II were System I cases (not series), checked my 1976 Catalog, page 475 . They had no nomenclature for the earlier ones.??
So what is a System III case? I have heard mention of it.
Jeff
In a message dated 4/21/2020 2:38:06 PM Eastern Standard Time, kmec@... writes:
Hi Dave!
Series One is the 200C, etc, series of rounded corner cabinets that housed Rack mount instruments. The 340 Noise figure meter is an example that comes to mind: A puce cabinet that is held in place by 2 set crews under the front edge that allows the cabinet to slip off and reveal a 19 inch rack panel inside, ready to bolt up. There were smaller instruments like the 200 CD, the 428A clip-on ammeter, 425A DC Microvoltmeter. Othe cases were the 608A-F Sig Gen, 606A/B sig gen, etc.
The series 2 were cases like the 432A power meter and the 8640B sig gen, 8690 sweeper, 141T Spec An, etc. These used the cast aluminum side rails.
Regards,
Jeff
In a message dated 4/21/2020 1:01:13 PM Eastern Standard Time, david_wise@... writes:
??Thank you, Jeff! ?I only need two. ?I'll send you my address off-list.
?
Now I'm confused. ?If I'm Series 2 (cast Al sides), then what was Series 1? ?Is there a cheat sheet, or representative example models?
?
Thanks,
Dave Wise
I have a stash from scrapping HP stuff. How many do you need? Also isnt the 740 a series 2 cabinet? With the cast Aluminum side rails, etc?
Jeff
In a message dated 4/21/2020 11:49:16 AM Eastern Standard Time, david_wise@... writes:
The top and bottom covers of the 740B are secured by screws which go through 6-32 J-style?spring nuts clipped onto the side panels. ?Except I'm missing some of them. ?The manual doesn't mention them.
?
These particular?spring nuts (speed?nuts, clip nuts, Tinnerman nuts, J-nuts, U-nuts)?seem to be obsolete or custom-made; I can't find anything to match.
?
The sticking point is the?1/8-inch panel depth.
?
All I can find?are for a 1/16-inch?panel.
?
Got any leads?
?
Thanks,
Dave Wise
?
PS: I think U-style would work as well as J-style.
|
Thank you, Jeff, for finding that catalog page.
So the old vacuum-tube instruments like the 428 and 606?are?pre-System, cast side panel?boxes like the 5245 and 740 are?System I, and cabinets with corner rails like the 339A?are System
II.
"System III" may be my defective memory. ?Somebody will know.
Dave Wise
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> on behalf of Jeff Kruth via groups.io <kmec@...>
Sent: Tuesday, April 21, 2020 1:55 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment]Series 1 & 2 boxes (was Seeking Spring Nuts for Series 1 cabinet)
?
Well, I was wrong and Robert corrected me. What I thought were System II were System I cases
(not series), checked my 1976 Catalog, page 475 . They had no nomenclature for the earlier ones.??
So what is a System III case? I have heard mention of it.
Jeff
In a message dated 4/21/2020 2:38:06 PM Eastern Standard Time, kmec@... writes:
Hi Dave!
Series One is the 200C, etc, series of rounded corner cabinets that housed Rack mount instruments. The 340 Noise figure meter is an example that comes to mind: A puce cabinet
that is held in place by 2 set crews under the front edge that allows the cabinet to slip off and reveal a 19 inch rack panel inside, ready to bolt up. There were smaller instruments like the 200 CD, the 428A clip-on ammeter, 425A DC Microvoltmeter. Othe cases
were the 608A-F Sig Gen, 606A/B sig gen, etc.
The series 2 were cases like the 432A power meter and the 8640B sig gen, 8690 sweeper, 141T Spec An, etc. These used the cast aluminum side rails.
Regards,
Jeff
In a message dated 4/21/2020 1:01:13 PM Eastern Standard Time,
david_wise@... writes:
??Thank you, Jeff! ?I only need two. ?I'll send you my address off-list.
?
Now I'm confused. ?If I'm Series 2 (cast Al sides), then what was Series 1? ?Is there a cheat sheet, or representative example models?
?
Thanks,
Dave Wise
I have a stash from scrapping HP stuff. How many do you need? Also isnt the 740 a series 2 cabinet? With the cast Aluminum side rails, etc?
Jeff
In a message dated 4/21/2020 11:49:16 AM Eastern Standard Time,
david_wise@... writes:
The top and bottom covers of the 740B are secured by screws which go through 6-32 J-style?spring nuts clipped onto the side panels. ?Except I'm missing some of them. ?The manual doesn't mention them.
?
These particular?spring nuts (speed?nuts, clip nuts, Tinnerman nuts, J-nuts, U-nuts)?seem to be obsolete or custom-made; I can't find anything to
match.
?
The sticking point is the?1/8-inch panel depth.
?
All I can find?are for a 1/16-inch?panel.
?
Got any leads?
?
Thanks,
Dave Wise
?
PS: I think U-style would work as well as J-style.
|
Is a System III the type used for an HP 3456A, etc.?
Thanks,
Barry - N4BUQ
toggle quoted message
Show quoted text
----- Original Message ----- From: "Jeff Kruth via groups.io" <kmec@...>
To: [email protected]
Sent: Tuesday, April 21, 2020 3:55:07 PM
Subject: Re: [HP-Agilent-Keysight-equipment]Series 1 & 2 boxes (was Seeking Spring Nuts for Series 1 cabinet)
Well, I was wrong and Robert corrected me. What I thought were System II were
System I cases (not series), checked my 1976 Catalog, page 475 . They had no
nomenclature for the earlier ones.
So what is a System III case? I have heard mention of it.
Jeff
In a message dated 4/21/2020 2:38:06 PM Eastern Standard Time,
kmec@... writes:
Hi Dave!Series One is the 200C, etc, series of rounded corner cabinets that
housed Rack mount instruments. The 340 Noise figure meter is an example that
comes to mind: A puce cabinet that is held in place by 2 set crews under the
front edge that allows the cabinet to slip off and reveal a 19 inch rack
panel inside, ready to bolt up. There were smaller instruments like the 200
CD, the 428A clip-on ammeter, 425A DC Microvoltmeter. Othe cases were the
608A-F Sig Gen, 606A/B sig gen, etc.The series 2 were cases like the 432A
power meter and the 8640B sig gen, 8690 sweeper, 141T Spec An, etc. These
used the cast aluminum side rails.
Regards,Jeff
In a message dated 4/21/2020 1:01:13 PM Eastern Standard Time,
david_wise@... writes:
??Thank you, Jeff! ?I only need two. ?I'll send you my address off-list.
?
Now I'm confused. ?If I'm Series 2 (cast Al sides), then what was Series 1?
?Is there a cheat sheet, or representative example models?
?
Thanks,
Dave Wise
From: [email protected]
<[email protected]> on behalf of Jeff Kruth via
groups.io <kmec@...>
Sent: Tuesday, April 21, 2020 9:48 AM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] Seeking Spring Nuts for Series 1
cabinet
I have a stash from scrapping HP stuff. How many do you need? Also isnt the
740 a series 2 cabinet? With the cast Aluminum side rails, etc?
Jeff
In a message dated 4/21/2020 11:49:16 AM Eastern Standard Time,
david_wise@... writes:
The top and bottom covers of the 740B are secured by screws which go through
6-32 J-style?spring nuts clipped onto the side panels. ?Except I'm missing
some of them. ?The manual doesn't mention them.
?
These particular?spring nuts (speed?nuts, clip nuts, Tinnerman nuts, J-nuts,
U-nuts)?seem to be obsolete or custom-made; I can't find anything to match.
?
The sticking point is the?1/8-inch panel depth.
?
All I can find?are for a 1/16-inch?panel.
?
Got any leads?
?
Thanks,
Dave Wise
?
PS: I think U-style would work as well as J-style.
|
That’s System II. They have removable handles. System I handles are part of the cast aluminum alloy side panels are are removable only by dropping the instrument from a considerable distance onto the handle. This process is not reversible!
Jeremy?
On Tue, Apr 21, 2020 at 2:13 PM n4buq < n4buq@...> wrote: Is a System III the type used for an HP 3456A, etc.?
Thanks,
Barry - N4BUQ
----- Original Message -----
> From: "Jeff Kruth via " <kmec=[email protected]>
> To: [email protected]
> Sent: Tuesday, April 21, 2020 3:55:07 PM
> Subject: Re: [HP-Agilent-Keysight-equipment]Series 1 & 2 boxes (was Seeking Spring Nuts for Series 1 cabinet)
>
> Well, I was wrong and Robert corrected me. What I thought were System II were
> System I cases (not series), checked my 1976 Catalog, page 475 . They had no
> nomenclature for the earlier ones.
>
> So what is a System III case? I have heard mention of it.
> Jeff
> In a message dated 4/21/2020 2:38:06 PM Eastern Standard Time,
> kmec=[email protected] writes:
> Hi Dave!Series One is the 200C, etc, series of rounded corner cabinets that
> housed Rack mount instruments. The 340 Noise figure meter is an example that
> comes to mind: A puce cabinet that is held in place by 2 set crews under the
> front edge that allows the cabinet to slip off and reveal a 19 inch rack
> panel inside, ready to bolt up. There were smaller instruments like the 200
> CD, the 428A clip-on ammeter, 425A DC Microvoltmeter. Othe cases were the
> 608A-F Sig Gen, 606A/B sig gen, etc.The series 2 were cases like the 432A
> power meter and the 8640B sig gen, 8690 sweeper, 141T Spec An, etc. These
> used the cast aluminum side rails.
> Regards,Jeff
> In a message dated 4/21/2020 1:01:13 PM Eastern Standard Time,
> david_wise@... writes:
>
>
> ??Thank you, Jeff!? I only need two.? I'll send you my address off-list.
>
> ?
>
> Now I'm confused.? If I'm Series 2 (cast Al sides), then what was Series 1?
> ?Is there a cheat sheet, or representative example models?
>
> ?
>
> Thanks,
>
> Dave Wise
> From: [email protected]
> <[email protected]> on behalf of Jeff Kruth via
> <kmec=[email protected]>
> Sent: Tuesday, April 21, 2020 9:48 AM
> To: [email protected]
> Subject: Re: [HP-Agilent-Keysight-equipment] Seeking Spring Nuts for Series 1
> cabinet
> I have a stash from scrapping HP stuff. How many do you need? Also isnt the
> 740 a series 2 cabinet? With the cast Aluminum side rails, etc?
> Jeff
> In a message dated 4/21/2020 11:49:16 AM Eastern Standard Time,
> david_wise@... writes:
>
>
> The top and bottom covers of the 740B are secured by screws which go through
> 6-32 J-style?spring nuts clipped onto the side panels.? Except I'm missing
> some of them.? The manual doesn't mention them.
>
> ?
>
> These particular?spring nuts (speed?nuts, clip nuts, Tinnerman nuts, J-nuts,
> U-nuts)?seem to be obsolete or custom-made; I can't find anything to match.
>
> ?
>
> The sticking point is the?1/8-inch panel depth.
>
> ?
>
> All I can find?are for a 1/16-inch?panel.
>
> ?
>
> Got any leads?
>
> ?
>
> Thanks,
>
> Dave Wise
>
> ?
>
> PS: I think U-style would work as well as J-style.
>
>
>
>
>
>
>
|
Some photos of System I and System II Cases on my website.
Steve
On Tuesday, April 21, 2020, 11:32:01 PM GMT+1, Jeremy Nichols <jn6wfo@...> wrote:
That’s System II. They have removable handles. System I handles are part of the cast aluminum alloy side panels are are removable only by dropping the instrument from a considerable distance onto the handle. This process is not reversible!
Jeremy?
On Tue, Apr 21, 2020 at 2:13 PM n4buq < n4buq@...> wrote: Is a System III the type used for an HP 3456A, etc.?
Thanks,
Barry - N4BUQ
----- Original Message -----
> From: "Jeff Kruth via " <kmec=[email protected]>
> To: [email protected]
> Sent: Tuesday, April 21, 2020 3:55:07 PM
> Subject: Re: [HP-Agilent-Keysight-equipment]Series 1 & 2 boxes (was Seeking Spring Nuts for Series 1 cabinet)
>
> Well, I was wrong and Robert corrected me. What I thought were System II were
> System I cases (not series), checked my 1976 Catalog, page 475 . They had no
> nomenclature for the earlier ones.
>
> So what is a System III case? I have heard mention of it.
> Jeff
> In a message dated 4/21/2020 2:38:06 PM Eastern Standard Time,
> kmec=[email protected] writes:
> Hi Dave!Series One is the 200C, etc, series of rounded corner cabinets that
> housed Rack mount instruments. The 340 Noise figure meter is an example that
> comes to mind: A puce cabinet that is held in place by 2 set crews under the
> front edge that allows the cabinet to slip off and reveal a 19 inch rack
> panel inside, ready to bolt up. There were smaller instruments like the 200
> CD, the 428A clip-on ammeter, 425A DC Microvoltmeter. Othe cases were the
> 608A-F Sig Gen, 606A/B sig gen, etc.The series 2 were cases like the 432A
> power meter and the 8640B sig gen, 8690 sweeper, 141T Spec An, etc. These
> used the cast aluminum side rails.
> Regards,Jeff
> In a message dated 4/21/2020 1:01:13 PM Eastern Standard Time,
> david_wise@... writes:
>
>
> ??Thank you, Jeff!? I only need two.? I'll send you my address off-list.
>
> ?
>
> Now I'm confused.? If I'm Series 2 (cast Al sides), then what was Series 1?
> ?Is there a cheat sheet, or representative example models?
>
> ?
>
> Thanks,
>
> Dave Wise
> From: [email protected]
> <[email protected]> on behalf of Jeff Kruth via
> <kmec=[email protected]>
> Sent: Tuesday, April 21, 2020 9:48 AM
> To: [email protected]
> Subject: Re: [HP-Agilent-Keysight-equipment] Seeking Spring Nuts for Series 1
> cabinet
> I have a stash from scrapping HP stuff. How many do you need? Also isnt the
> 740 a series 2 cabinet? With the cast Aluminum side rails, etc?
> Jeff
> In a message dated 4/21/2020 11:49:16 AM Eastern Standard Time,
> david_wise@... writes:
>
>
> The top and bottom covers of the 740B are secured by screws which go through
> 6-32 J-style?spring nuts clipped onto the side panels.? Except I'm missing
> some of them.? The manual doesn't mention them.
>
> ?
>
> These particular?spring nuts (speed?nuts, clip nuts, Tinnerman nuts, J-nuts,
> U-nuts)?seem to be obsolete or custom-made; I can't find anything to match.
>
> ?
>
> The sticking point is the?1/8-inch panel depth.
>
> ?
>
> All I can find?are for a 1/16-inch?panel.
>
> ?
>
> Got any leads?
>
> ?
>
> Thanks,
>
> Dave Wise
>
> ?
>
> PS: I think U-style would work as well as J-style.
>
>
>
>
>
>
>
|
The System II designation refers to the second design of MODULAR case. Not all HPAK instruments use modular cases. Obviously the ones pre-dating? it? can't.
339A and 3456A both use modular cases, the 3546A is System II and the 339A is the original, often called System I. The 5315A is non-modular (plastic case) so neither System I or II while the 5315B is modular, System II.
System I one piece exposed, cast side frames, sheet ot multipart front panel
System II one piece cast front panel frame, side structure hidden under cover panels.
HP sold both original and System II cases along side each other at least into the seventies.
Note that not all original modular cases (System I) had handles cast integrally with the side frames. you can't use absence of handles to determine case type.
The quirk of groups starting a new thread if you reply to an email is very annoying.
Robert G8RPI.
|
On Wed, Apr 22, 2020 at 12:38 AM, Robert G8RPI wrote:
The quirk of groups starting a new thread if you reply to an email is very annoying.
Regarding the new thread creation, I was thinking that it was caused by members changing the subject block when replying to an existing thread. Whatever the cause I agree that it is annoying. Hopefully the moderator will solve the issue. The problem seems to be more common on this group than on other IO groups.
|
?The 339A?is System II. ?Perhaps you are thinking of the 331A through 334A which are System I.
Dave Wise
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> on behalf of Robert G8RPI via groups.io <robert8rpi@...>
Sent: Wednesday, April 22, 2020 12:38 AM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] Series 1 & 2 boxes (was Seeking Spring Nuts for Series 1 cabinet)
?
The System II designation refers to the second design of MODULAR case. Not all HPAK instruments use modular cases. Obviously the ones pre-dating? it? can't.
339A and 3456A both use modular cases, the 3546A is System II and the 339A is the original, often called System I. The 5315A is non-modular (plastic case) so neither System I or II while the 5315B is modular, System II.
System I one piece exposed, cast side frames, sheet ot multipart front panel
System II one piece cast front panel frame, side structure hidden under cover panels.
HP sold both original and System II cases along side each other at least into the seventies.
Note that not all original modular cases (System I) had handles cast integrally with the side frames. you can't use absence of handles to determine case type.
The quirk of groups starting a new thread if you reply to an email is very annoying.
Robert G8RPI.
|
?Thank you, Steve.
And Jeremy made me laugh out loud, I've seen examples of System I with "removed" handles.
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> on behalf of Steve A via groups.io <starmux64@...>
Sent: Wednesday, April 22, 2020 12:06 AM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment]Series 1 & 2 boxes (was Seeking Spring Nuts for Series 1 cabinet)
?
Some photos of System I and System II Cases on my website.
Steve
On Tuesday, April 21, 2020, 11:32:01 PM GMT+1, Jeremy Nichols <jn6wfo@...> wrote:
That’s System II. They have removable handles. System I handles are part of the cast aluminum alloy side panels are are removable only by dropping the instrument from a considerable distance onto the handle. This process is not reversible!
Jeremy?
|
I was LOL, too, although I've never seen those built-in handles broken off!? I can imagine, as my 54504A scope has "feet" built into the aluminum chassis, and some are partially broken off.? It's supposed to be able to rest level on those feet with the screen facing up; that feature doesn't work so well these days...? Oh well.
Jim Ford?
Sent from my Verizon, Samsung Galaxy smartphone
toggle quoted message
Show quoted text
-------- Original message -------- From: Dave Wise <david_wise@...> Date: 4/22/20 2:38 PM (GMT-08:00) Subject: Re: [HP-Agilent-Keysight-equipment]Series 1 & 2 boxes (was Seeking Spring Nuts for Series 1 cabinet)
?Thank you, Steve.
And Jeremy made me laugh out loud, I've seen examples of System I with "removed" handles.
From: [email protected] <[email protected]> on behalf of Steve A via groups.io <starmux64@...>
Sent: Wednesday, April 22, 2020 12:06 AM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment]Series 1 & 2 boxes (was Seeking Spring Nuts for Series 1 cabinet)
?
Some photos of System I and System II Cases on my website.
Steve
On Tuesday, April 21, 2020, 11:32:01 PM GMT+1, Jeremy Nichols <jn6wfo@...> wrote:
That’s System II. They have removable handles. System I handles are part of the cast aluminum alloy side panels are are removable only by dropping the instrument from a considerable distance onto the handle. This process is not reversible!
Jeremy?
|
Actually, I once received a System I instrument with a snapped-off handle. I negotiated “compensation” from the eBay seller, took the side off of the instrument, and went to my friendly local welder. Can you fix this? Sure!?
I was LOL, too, although I've never seen those built-in handles broken off!? I can imagine, as my 54504A scope has "feet" built into the aluminum chassis, and some are partially broken off.? It's supposed to be able to rest level on those feet with the screen facing up; that feature doesn't work so well these days...? Oh well.
Jim Ford?
Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message -------- Date: 4/22/20 2:38 PM (GMT-08:00) Subject: Re: [HP-Agilent-Keysight-equipment]Series 1 & 2 boxes (was Seeking Spring Nuts for Series 1 cabinet)
?Thank you, Steve.
And Jeremy made me laugh out loud, I've seen examples of System I with "removed" handles.
Some photos of System I and System II Cases on my website.
Steve
On Tuesday, April 21, 2020, 11:32:01 PM GMT+1, Jeremy Nichols < jn6wfo@...> wrote:
That’s System II. They have removable handles. System I handles are part of the cast aluminum alloy side panels are are removable only by dropping the instrument from a considerable distance onto the handle. This process is not reversible!
Jeremy?
|
Dave,
You are correct, I was wrong about the 339A it is System II Doh! My only excuse is I've been doing 12 hours+ work (at home) at the moment. I was probably thinking of the distortion analysers.
Robert G8RPI.
|
Jeremy Nichols
Tom Phillips