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Re: HP7004B X-Y plotter schematic

 

Thank you all for your suggestions,? I cleaned the slide wires with Cramolin Red, same as deoxit, but it made no difference. I do believe the fault to be electrical considering its age most likely? a capacitor or resistor gone high. To this end I have removed the main circuit board to give better access (quite a task since they didnt use multi pin connectors for the board connections but each wire is a separate push on connector).
Without a schematic its guess work but hopefully it will work out.
Cheers Steve.

On Sun, 18 Oct 2020, 8:29 am KeepIt SimpleStupid via , <keepitsimplestupid=[email protected]> wrote:

Slide wire (an oil lube that HP supplied)
Zero pots
Variable gain pots

External bad connections (picks up 60 Hz)

The platten (static hold down) can get picky.

Then comes the spring thing that holds the pens.

On Saturday, October 17, 2020, 4:35:51 PM EDT, J via <emptech=[email protected]> wrote:


What is a 7004B, is it a bed plotter?? I think back in those days you actually could get a real service manual, non of those CLIPS.? If I can get up to my attic I'll check my stack of manuals.? Jim

Re: HP7004B X-Y plotter schematic

 

Slide wire (an oil lube that HP supplied)
Zero pots
Variable gain pots

External bad connections (picks up 60 Hz)

The platten (static hold down) can get picky.

Then comes the spring thing that holds the pens.

On Saturday, October 17, 2020, 4:35:51 PM EDT, J via groups.io <emptech@...> wrote:


What is a 7004B, is it a bed plotter?? I think back in those days you actually could get a real service manual, non of those CLIPS.? If I can get up to my attic I'll check my stack of manuals.? Jim

3585A double graticule mystery solved

 

Recall that, a few weeks ago, I had posted a question about curious graticule behavior on my 3585A spectrum analyzer. The CRT has an internal etched graticule, but the display system was also drawing a graticule on the CRT.

Several people surmised that the problem was caused by someone franken-instrumenting some 3585B parts into a 3585A, and that was indeed the case. There was an 03585-66588 display driver board installed where there should've been an 03585-66563 board.

I've replaced it with the proper 03585-66563 board, and all is well, the drawn graticule is gone.

Thanks, everyone, for pointing me in the right direction.

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA
Re: HP7004B X-Y plotter schematic

 

What is a 7004B, is it a bed plotter?? I think back in those days you actually could get a real service manual, non of those CLIPS.? If I can get up to my attic I'll check my stack of manuals.? Jim
Re: HP7004B X-Y plotter schematic

 

HP used to include a little vial of silicone oil for
lubricating the slide wire on X-Y plotters. It is a
nasty stuff that creeps everywhere.

I think I would take Richard's idea and just use Faderlube.
It is very good at eliminating noise on pots... which is
much the same problem here.

-Chuck Harris

Dave McGuire wrote:


? I was about to say the same thing.? DeOxit, would also be good, this being a metal
element.

????????????? -Dave

On 10/17/20 2:00 PM, Richard Knoppow wrote:
??? I wonder if Caig Faderlub would be good for this.

On 10/17/2020 9:38 AM, John Annison wrote:

³§³Ù±ð±¹±ð¡­¡­¡­..
Re: HP7004B X-Y plotter schematic

 

I was about to say the same thing. DeOxit, would also be good, this being a metal element.

-Dave

On 10/17/20 2:00 PM, Richard Knoppow wrote:
?? I wonder if Caig Faderlub would be good for this.
On 10/17/2020 9:38 AM, John Annison wrote:

³§³Ù±ð±¹±ð¡­¡­¡­..

As pointed out the unstable X or Y axis (jitter) is caused by poor contact to the long liner resistors along the X and Y axis. The resistors and the sliding contact brush would have to be cleaned.

At the time we would use alcohol and so forth to clean both areas. The resistors would sometimes be gently and carefully cleaned with a soft rubber eraser.

As for schematics, I am retired from the industry, but this is old equipment and would think that information should be around.

Good luck
--
Dave McGuire, AK4HZ
New Kensington, PA
Re: HP7004B X-Y plotter schematic

 

I wonder if Caig Faderlub would be good for this.

On 10/17/2020 9:38 AM, John Annison wrote:

³§³Ù±ð±¹±ð¡­¡­¡­..

As pointed out the unstable X or Y axis (jitter) is caused by poor contact to the long liner resistors along the X and Y axis. The resistors and the sliding contact brush would have to be cleaned.

At the time we would use alcohol and so forth to clean both areas. The resistors would sometimes be gently and carefully cleaned with a soft rubber eraser.

As for schematics, I am retired from the industry, but this is old equipment and would think that information should be around.

Good luck
--
Richard Knoppow
dickburk@...
WB6KBL
Re: HP7004B X-Y plotter schematic

 

³§³Ù±ð±¹±ð¡­¡­¡­..

?

As pointed out the unstable X or Y axis (jitter) is caused by poor contact to the long liner resistors along the X and Y axis. The resistors and the sliding contact brush would have to be cleaned.

At the time we would use alcohol and so forth to clean both areas. The resistors would sometimes be gently and carefully cleaned with a soft rubber eraser.

As for schematics, I am retired from the industry, but this is old equipment and would think that information should be around.

Good luck
Re: OT: what are these connectors?

 

The bayonet ones are still used. One application is aircraft capacitance type fuel contents probes. Typically a probe will have 3 in? combination of 2 and three lug and reversed polarity. Not cheap as aircraft parts.
Re: OT: what are these connectors?

 

The mini-BNC was used in the R-390A of the same vintage.? Matching connectors used to be available from Fair Radio.?

Ed? W2EMN


-----Original Message-----
From: DF6NA Rainer <df6na@...>
To: [email protected]; saipan1959@...
Sent: Sat, Oct 17, 2020 1:35 am
Subject: Re: [HP-Agilent-Keysight-equipment] OT: what are these connectors?

Hi Pete,

the smaller one (J1) looks like what we call Mini-BNC.

73, Rainer


Am 17.10.2020 um 03:26 schrieb saipan59 (Pete):
Can anyone identify the connectors described in the attached picture? Those Cannon and Dage part numbers are not showing up for me. Unfortunately, that's the only picture and data that I have.
Here's what I know:
The device is a CIA "bug" transmitter, circa 1960. RF signal is in the range of 55 to 81 MC.
Based on the device's overall dimensions, the body diameter of J2 is about 7mm, while J1 is about 6mm.
They might be a bayonet type, like a BNC, but smaller (and two different sizes).
The power connector is not shown in the picture - it's on the end of a cable on the left side.

Thanks,
Pete
Re: OT: what are these connectors?

 

Thanks everyone!

Pete
Re: OT: what are these connectors?

 

BSM connectors.? See?.? Tek used them on some sampling gear.? Good luck finding any mates.? I have plans to change mine out for SMAs.? Someday...

Jim Ford

------ Original Message ------
From: "DF6NA Rainer" <df6na@...>
Sent: 10/16/2020 10:35:24 PM
Subject: Re: [HP-Agilent-Keysight-equipment] OT: what are these connectors?

Hi Pete,

the smaller one (J1) looks like what we call Mini-BNC.

73, Rainer


Am 17.10.2020 um 03:26 schrieb saipan59 (Pete):
Can anyone identify the connectors described in the attached picture? Those Cannon and Dage part numbers are not showing up for me. Unfortunately, that's the only picture and data that I have.
Here's what I know:
The device is a CIA "bug" transmitter, circa 1960. RF signal is in the range of 55 to 81 MC.
Based on the device's overall dimensions, the body diameter of J2 is about 7mm, while J1 is about 6mm.
They might be a bayonet type, like a BNC, but smaller (and two different sizes).
The power connector is not shown in the picture - it's on the end of a cable on the left side.

Thanks,
Pete
Re: OT: what are these connectors?

 

¿ªÔÆÌåÓý

Hi Pete,

the smaller one (J1) looks like what we call Mini-BNC.

73, Rainer


Am 17.10.2020 um 03:26 schrieb saipan59 (Pete):

Can anyone identify the connectors described in the attached picture? Those Cannon and Dage part numbers are not showing up for me. Unfortunately, that's the only picture and data that I have.
Here's what I know:
The device is a CIA "bug" transmitter, circa 1960. RF signal is in the range of 55 to 81 MC.
Based on the device's overall dimensions, the body diameter of J2 is about 7mm, while J1 is about 6mm.
They might be a bayonet type, like a BNC, but smaller (and two different sizes).
The power connector is not shown in the picture - it's on the end of a cable on the left side.

Thanks,
Pete

IMG_20201017_072531.jpg
IMG_20201017_072800.jpg

Re: OT: what are these connectors?

 

Looks like type MB connector, not all that rare and, period correct.

?

I'll dig through an old cannon book for the others.

?

-J-

-----Original Message-----
From: "saipan59 (Pete)" <saipan1959@...>
Sent: Friday, October 16, 2020 9:26pm
To: [email protected]
Subject: [HP-Agilent-Keysight-equipment] OT: what are these connectors?

Can anyone identify the connectors described in the attached picture? Those Cannon and Dage part numbers are not showing up for me. Unfortunately, that's the only picture and data that I have.
Here's what I know:
The device is a CIA "bug" transmitter, circa 1960. RF signal is in the range of 55 to 81 MC.
Based on the device's overall dimensions, the body diameter of J2 is about 7mm, while J1 is about 6mm.
They might be a bayonet type, like a BNC, but smaller (and two different sizes).
The power connector is not shown in the picture - it's on the end of a cable on the left side.

Thanks,
Pete
Re: HP7004B X-Y plotter schematic

 

Thanks Bruce, I will do that with those slide wire resistors. On the main pcb there are two brown blocks, one of these is badly burnt, if they are power resistors as I suspect it is probably still ok, this is another reason I was looking for the schematic.?
Cheers Steve

On Sat, 17 Oct 2020, 12:50 pm Bruce, <bruce@...> wrote:

If fit is like the plotters I used in college, there are wires that?
the carriage slides along to sense its position - clean them?
carefully. The symptom is "vibrating" or spastic motion of the x r y?
carriage.? The other possible problem if it is vibrating could be the?
damping adjustments.
Cheers!

Bruce
? oting Steve Dench <sjdench48@...>:

> Hi, would anyone have a schematic for the HP7004B plotter, I went to?
> use it the other day to do some plots from my 141T and it no longer?
> wants to play the game. I checked all the electrolytic capacitors?
> (considering its age) and replaced some to no avail, all I managed?
> to do was introduce another fault, pen solenoid no longer works.?
> Original fault was X very unstable. All that I can find by searching?
> the internet was a user/operator manual.
> Thanks Steve.
>
>
>








Re: HP7004B X-Y plotter schematic

 

If fit is like the plotters I used in college, there are wires that the carriage slides along to sense its position - clean them carefully. The symptom is "vibrating" or spastic motion of the x r y carriage. The other possible problem if it is vibrating could be the damping adjustments.
Cheers!

Bruce
oting Steve Dench <sjdench48@...>:

Hi, would anyone have a schematic for the HP7004B plotter, I went to use it the other day to do some plots from my 141T and it no longer wants to play the game. I checked all the electrolytic capacitors (considering its age) and replaced some to no avail, all I managed to do was introduce another fault, pen solenoid no longer works. Original fault was X very unstable. All that I can find by searching the internet was a user/operator manual.
Thanks Steve.
OT: what are these connectors?

 

Can anyone identify the connectors described in the attached picture? Those Cannon and Dage part numbers are not showing up for me. Unfortunately, that's the only picture and data that I have.
Here's what I know:
The device is a CIA "bug" transmitter, circa 1960. RF signal is in the range of 55 to 81 MC.
Based on the device's overall dimensions, the body diameter of J2 is about 7mm, while J1 is about 6mm.
They might be a bayonet type, like a BNC, but smaller (and two different sizes).
The power connector is not shown in the picture - it's on the end of a cable on the left side.

Thanks,
Pete
HP7004B X-Y plotter schematic

 

Hi, would anyone have a schematic for the HP7004B plotter, I went to use it the other day to do some plots from my 141T and it no longer wants to play the game. I checked all the electrolytic capacitors (considering its age) and replaced some to no avail, all I managed to do was introduce another fault, pen solenoid no longer works. Original fault was X very unstable. All that I can find by searching the internet was a user/operator manual.
Thanks Steve.
Re: Agilent 54831M

 

On Fri, Oct 16, 2020 at 03:52 PM, Bostonman wrote:
Keep in mind, this booting issue began before I entered BIOS, however, since the issue began, I've changed the boot order several times in hopes to solve the issue.
Sorry, haven't read all messages in this thread, but did you get your device with these messages showing?
In that case it might come from a networked environment, so it is possible the network interface has the PXE bootrom installed.
In that case you need to remove that ROM from the network interface, or there may be a jumper/dipswitch to enable/disable network boot on the network interface.
If is has a PC like motherboard, you might even (temporarily) remove the network interface.

If your machine was working normally (I mean booting from disk like it should), and it stopped booting from disk, there must be something else wrong with your replacement disk, like the bootpartition not being active, etc.
There are tools, like?diskpart from Easy?Recovery,?that can do that for you.?

Wish I could help you more,

Leo
Re: HP 5420A/B and HP5423A Signal / Structural Analyzers

 

Has any progress been made on this project? I have a 5423A system, it would be a hoot to have it running.
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