Thank you.

On 9/2/2019 2:06 PM, Tam Hanna wrote:

Component Level Information Package.


Document with the schematics of a Hewlett Packard TMI.

With best regards
Tam HANNA

Enjoy electronics? Join 15k7 other followers by visiting the Crazy Electronics Lab at
On 2019. 09. 02. 23:02, Jim Ford wrote:

Uh, dumb question:? what is the clip? Or CLIP?

Thanks.

Jim Ford



Sent from my Verizon, Samsung Galaxy smartphone

-------- Original message --------
From: "Dave_G0WBX via Groups.Io" <g8kbvdave@...>
Date: 9/2/19 1:47 AM (GMT-08:00)
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP8714B source module extender needed

From: hp70000freak <mailto:hp70000freak@...?subject=Re:%20HP8714B%20source%20module%20extender%20needed>
Date: Sun, 01 Sep 2019 06:57:29 PDT

Hello,

I had the same issue long time ago. It was a faulty RF amplifier stage. As far as I can remember schematics are in the net and the amplifier was something like ATF 53142 or so.

I soldered thin coax onto the board in order to pickup the signal stage by stage and find the fault.

?Cheers,
-----------------------------------------------------------------
Hi.

Thanks for that, and yes I suspect it's just an internal amplification issue.

Yes, I also found some schematics in the past, but also note that ArtekManuals have the full service manual + clip.

and just put 8714B in the search box.

Need to find some space to do stuff like this, as those modules with the covers removed (for access) are rather vulnerable to mechanical damage.

Regards to All.

Dave B
(G0WBX)

--
Created on and sent from a Unix like PC running and using free and open source software:

Component Level Information Package.
Document with the schematics of a Hewlett Packard TMI.
With best regards
Tam HANNA
Enjoy electronics? Join 15k7 other followers by visiting the Crazy Electronics Lab at On 2019. 09. 02. 23:02, Jim Ford wrote:

Uh, dumb question:? what is the clip?? Or CLIP?

Thanks.

Jim Ford



Sent from my Verizon, Samsung Galaxy smartphone

-------- Original message --------
From: "Dave_G0WBX via Groups.Io" <g8kbvdave@...>
Date: 9/2/19 1:47 AM (GMT-08:00)
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP8714B source module extender needed

From: hp70000freak <mailto:hp70000freak@...?subject=Re:%20HP8714B%20source%20module%20extender%20needed>
Date: Sun, 01 Sep 2019 06:57:29 PDT

Hello,

I had the same issue long time ago. It was a faulty RF amplifier stage. As far as I can remember schematics are in the net and the amplifier was something like ATF 53142 or so.

I soldered thin coax onto the board in order to pickup the signal stage by stage and find the fault.

?Cheers,
-----------------------------------------------------------------
Hi.

Thanks for that, and yes I suspect it's just an internal amplification issue.

Yes, I also found some schematics in the past, but also note that ArtekManuals have the full service manual + clip.

and just put 8714B in the search box.

Need to find some space to do stuff like this, as those modules with the covers removed (for access) are rather vulnerable to mechanical damage.

Regards to All.

Dave B
(G0WBX)

--
Created on and sent from a Unix like PC running and using free and open source software:

Uh, dumb question:? what is the clip?? Or CLIP?
Thanks.
Jim Ford
Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------
From: "Dave_G0WBX via Groups.Io" <g8kbvdave@...>
Date: 9/2/19 1:47 AM (GMT-08:00)
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP8714B source module extender needed
From: hp70000freak <mailto:hp70000freak@...?subject=Re:%20HP8714B%20source%20module%20extender%20needed>
Date: Sun, 01 Sep 2019 06:57:29 PDT
Hello,
I had the same issue long time ago. It was a faulty RF amplifier stage. As far as I can remember schematics are in the net and the amplifier was something like ATF 53142 or so.
I soldered thin coax onto the board in order to pickup the signal stage by stage and find the fault.
?Cheers,
-----------------------------------------------------------------
Hi.
Thanks for that, and yes I suspect it's just an internal amplification issue.
Yes, I also found some schematics in the past, but also note that ArtekManuals have the full service manual + clip.
and just put 8714B in the search box.
Need to find some space to do stuff like this, as those modules with the covers removed (for access) are rather vulnerable to mechanical damage.
Regards to All.
Dave B
(G0WBX)
--
Created on and sent from a Unix like PC running and using free and open source software:

Uh, dumb question:? what is the clip?? Or CLIP?

Thanks.?

Jim Ford?

Sent from my Verizon, Samsung Galaxy smartphone

-------- Original message --------

From: "Dave_G0WBX via Groups.Io" <g8kbvdave@...>

Date: 9/2/19 1:47 AM (GMT-08:00)

To: [email protected]

Subject: Re: [HP-Agilent-Keysight-equipment] HP8714B source module extender needed

From: hp70000freak
Date: Sun, 01 Sep 2019 06:57:29 PDT

Hello,

I had the same issue long time ago. It was a faulty RF amplifier stage. As far as I can remember schematics are in the net and the amplifier was something like ATF 53142 or so.?

I soldered thin coax onto the board in order to pickup the signal stage by stage and find the fault.

?Cheers,

---

Hi.

Thanks for that, and yes I suspect it's just an internal amplification issue.

Yes, I also found some schematics in the past, but also note that ArtekManuals have the full service manual + clip.

??? ????? and just put 8714B in the search box.

Need to find some space to do stuff like this, as those modules with the covers removed (for access) are rather vulnerable to mechanical damage.

Regards to All.

Dave B

(G0WBX)

-- 
Created on and sent from a Unix like PC running and using free and open source software:

From: hp70000freak
Date: Sun, 01 Sep 2019 06:57:29 PDT

-- 
Created on and sent from a Unix like PC running and using free and open source software:

While we’re on the OT route I wanted to throw this in since there are numerous blind leads towards any additional documentation on this unit.? To all – please accept my apologies for posting my question on this group but, as I stated above, trying to find anything related to it has turned out to be rather dismal and I hope there may be someone out there who has had a working familiarity (previous company employee?) with it.

?

Several years ago I had the “honor” of closing a company that was bought up by a larger concern who ended up not knowing what to do with it or it’s products.? In the process I had access to most of the hardware development test equipment.? Part of this was two nearly new Telecom Analysis Systems, Inc. model 122 telephone network emulators that had originally cost many shekels (~$15k each).

?

Over the years I utilized these machines periodically in my work but a few years ago one fell sick.? Obviously the user manual contained no diagnostic information nor any other maintenance support data.? Asking around and searching the web produced no results and the original company (TAS Inc.) had suffered the “little fish being eaten buy a bigger one” a few times resulting what now appears to be your typical purchase by a bunch of suits who only want a return on their investment without spending any money on customer support anymore.

?

These are nice unit although they were superseded over the years with more advanced models but still very useful.? But when one opens the cover on them the world of fear ensues while you observed layer upon layer of large, nested and densely populated printed circuit boards that ask not to be disturbed without knowing what you are doing in there.

?

I realize that the OT requests that occasionally occur in this group frequently result in good information but I am not hoping for much in this instance.? But if any service related information does appear, you have my complete attention.

?

Thanks,

?

Greg

Hi Tom thank you for your input? regarding test pointes and
The current measured across J1 is about 42 microAmperes
So at this point I am going to suspect the battery as it was OLD battery
The voltage across the battery when connected is 3.59 volts so I will look at it in a weeks time and check the current
Just one last comment on the Ram battery and I did post on this site at the time
When I first received the unit it would lock up after an hours running
The ram battery did not show a fault but changing it cured the locking up fault
Strange? !

?

Hi Paul,

I measured a working E4418B here.? The battery Voltage on mine is 2.8948V with J1 in and 2.8960V with J1 out.? The current measured across J1 is about 42 microAmperes.? This is without AC power connected.

Tom

?

Hi Paul,

First, measure the current draw on the battery when there the E4418B is disconnected from AC power.? You can do this by pulling the jumper (J1) and measuring the current across the jumper pins.?? If the current is too high (I can measure a good one later today), I would check C78 (10 microFarad, 10V cap) or diode CR2.? If those check good the problem could be in the battery monitor chip (U1).?? This being said, don't overlook the battery itself.? How old is the battery?

Tom Bryan
N3AJA

?

On 9/2/2019 9:40 AM, Paul Bicknell wrote:

My E4418B power meter came up with Ram battery failed

?

As I only replaced it 3 years ago I opened it up and it was at 0.2 volts?

So replaced it cleared the fault and did a sylph test it returned the same fault

?

This happened several times eventually it cleared?

After a second power cycle and several moor sylph tests

?

Any one else hade the same problem in clearing Ram battery failed

?

No virus found in this message.
Checked by AVG -
Version: 2016.0.8048 / Virus Database: 4793/15884 - Release Date: 08/14/18
Internal Virus Database is out of date.

I think we all are seeing where this is going, so I'm taking the liberty to quote the

QUOTE
Group Description

This group is dedicated to the maintenance, repair, usage, and correct operation of HP, Agilent and Keysight test equipment and accessories. It concentrates on older equipment for which support from HP, Agilent or Keysight has been discontinued, but questions about current equipment may be posted.

Members may post questions, request information or manuals, or explain how they solved particular problems. All aspects of equipment repair, calibration, maintenance, and operation are within the scope of the group

****UNQUOTE****

Raymond

Hello,

this now, leaves me in a bad situation - both Tom and you are Engineers whom I deeply respect.


However, if I look back at my life, I still feel that I owe to respond to this in defence of myself, my political attitudes and my world view. In my circle of contacts in the UK, almost 75% are pro Brexit. This, of course, is a question of the cluster effect and I agree to that.


HOWEVER: in the last 20 years, liberals have passed so many laws and statutes with no concern whatsoever given to conservatives thought.

Always ask yourself: if Remain had won 51 to 49 percent, how much consideration would have been given to Leave voters? Then, give exactly this amount to Remain voters.



With best regards
Tam HANNA

Enjoy electronics? Join 15k7 other followers by visiting the Crazy Electronics Lab at

On 2019. 09. 02. 21:21, Peter Gottlieb wrote:

Even the slimmest of majorities may end up severely damaging a country. Sometimes, by a voting system's quirks (electoral college), even a minority may end up being extremely damaging.? In any case it's close to 50:50.

Perhaps the problem is that the same mechanism (of the slightest of margins) which is used for deciding inconsequential issues is used for deciding existential issues.

Not sure there are any easy fixes.




On 9/2/2019 2:56 PM, Tom Gardner wrote:

On 02/09/19 18:19, Tam Hanna wrote:

In the UK, it even achieved a total majority in an election

I've stayed out of this conversation until now, but misstatements like that are *far* more offensive than an odd word.

Even on the day, it was only 52:48, and it may well be reversed now.

Enough politics, before my blood turns to gas.

Even the slimmest of majorities may end up severely damaging a country. Sometimes, by a voting system's quirks (electoral college), even a minority may end up being extremely damaging.? In any case it's close to 50:50.

Perhaps the problem is that the same mechanism (of the slightest of margins) which is used for deciding inconsequential issues is used for deciding existential issues.

Not sure there are any easy fixes.




On 9/2/2019 2:56 PM, Tom Gardner wrote:

On 02/09/19 18:19, Tam Hanna wrote:

In the UK, it even achieved a total majority in an election

I've stayed out of this conversation until now, but misstatements like that are *far* more offensive than an odd word.

Even on the day, it was only 52:48, and it may well be reversed now.

Enough politics, before my blood turns to gas.

On 02/09/19 18:19, Tam Hanna wrote:

In the UK, it even achieved a total majority in an election

I've stayed out of this conversation until now, but misstatements like that are *far* more offensive than an odd word.

Even on the day, it was only 52:48, and it may well be reversed now.

Enough politics, before my blood turns to gas.

A month ago I have received - here in the UK - a letter from our Australian customer.?
You just don't get them like this anymore - nice envelope, other hemisphere stamps, good paper, old style font and hand signed.
Reasonably serious, technical business letter - including the F-word used for seemingly no particular reason!
Leo