Pauls suggestion is a good one, although remember that IFR acquired Marconi Instruments so there is unlikely to be much on their kit
in any archive they have.
?
Also IFR being American based may have their own archive although I’ve never heard anything about it.
Marconi stuff would be all in the UK.
?
?
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From: [email protected] [mailto:[email protected]]
On Behalf Of Paul Bicknell
Sent: 26 April 2019 10:01
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] IFR
?
Hi Jeff
?
You could try
?
marconi_test_instruments@... <marconi_test_instruments@...>
?
Regards Paul
?
I know that this .io group deals with HP equipment.? BUT...? can anybody suggest a group that will discuss equipment made by IFR?? Specifically, I have an IFR 1100S where the "frequency error meter" does not appear to work correctly.? It
will zero out when the power to the unit is OFF.? When the unit is turned on, the meter always reads about +4Khz, no matter how far off the input frequency is with relation to the position of the thumbwheel frequency selectors. Although there is an op-amp
that is the "meter driver," there does not appear to be a way to zero out the meter or to change its gain.
Any suggestions would be appreciated.
Thank you,
--jeff
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Internal Virus Database is out of date.
|
Hi Jeff
?
You could try
?
marconi_test_instruments@...
<marconi_test_instruments@...>
?
Regards Paul
?
I know that this .io group deals with HP equipment.? BUT...?
can anybody suggest a group that will discuss equipment made by IFR??
Specifically, I have an IFR 1100S where the "frequency error meter"
does not appear to work correctly.? It will zero out when the power to the
unit is OFF.? When the unit is turned on, the meter always reads about
+4Khz, no matter how far off the input frequency is with relation to the
position of the thumbwheel frequency selectors. Although there is an op-amp
that is the "meter driver," there does not appear to be a way to zero
out the meter or to change its gain.
Any suggestions would be appreciated.
Thank you,
--jeff
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Internal Virus Database is out of date.
|
First question is… do you have a manual for this unit.?
?
Nigel
?
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From: [email protected] [mailto:[email protected]]
On Behalf Of Jeff Chang
Sent: 26 April 2019 07:14
To: [email protected]
Subject: [HP-Agilent-Keysight-equipment] IFR
?
I know that this .io group deals with HP equipment.? BUT...? can anybody suggest a group that will discuss equipment made by IFR?? Specifically, I have an IFR 1100S where the "frequency error meter" does not appear to work correctly.? It
will zero out when the power to the unit is OFF.? When the unit is turned on, the meter always reads about +4Khz, no matter how far off the input frequency is with relation to the position of the thumbwheel frequency selectors. Although there is an op-amp
that is the "meter driver," there does not appear to be a way to zero out the meter or to change its gain.
Any suggestions would be appreciated.
Thank you,
--jeff
|
Hi Jeff
The IFR group is called aeroflex7264. which is not very active
Or try the Marconi_Test_Instruments ?group which is more active. ?
At one time IFR owned Marconi in the UK.
Regards
George G6HIG?
On Friday, April 26, 2019 7:41 AM, Jeff Chang <felix1063@...> wrote:
I know that this .io group deals with HP equipment.? BUT...? can anybody suggest a group that will discuss equipment made by IFR?? Specifically, I have an IFR 1100S where the "frequency error meter" does not appear to work correctly.? It will zero out when the power to the unit is OFF.? When the unit is turned on, the meter always reads about +4Khz, no matter how far off the input frequency is with relation to the position of the thumbwheel frequency selectors. Although there is an op-amp that is the "meter driver," there does not appear to be a way to zero out the meter or to change its gain.
Any suggestions would be appreciated.
Thank you,
--jeff
|
I know that this .io group deals with HP equipment.? BUT...? can anybody suggest a group that will discuss equipment made by IFR?? Specifically, I have an IFR 1100S where the "frequency error meter" does not appear to work correctly.? It will zero out when the power to the unit is OFF.? When the unit is turned on, the meter always reads about +4Khz, no matter how far off the input frequency is with relation to the position of the thumbwheel frequency selectors. Although there is an op-amp that is the "meter driver," there does not appear to be a way to zero out the meter or to change its gain.
Any suggestions would be appreciated.
Thank you,
--jeff
|
HP16533A - Attenuator repair (Why I'm always unlucky?)
Greetings everyone
Well, got a new logic analyser. And with it, new boards. Sold my old 16500C and got a 16702A (and already got a 16702B, just waiting for it to arrive)
The new scope board was bought months ago. But, since I live in Brazil, took some time to the board to arrive. Made a pair of 30cm cables today, tried to calibrate the scope and...Lots of "fail" messages.
Connected a direct cable from calibrator output to chan1 input and the signal varies intensity in time. Looks like an attenuator problem. If I try to autoscale, it goes haywire, with a dc offsett of 170 volts (!) or some. The square wave varies amplitude and looks like an attenuator problem.
I still have the 16532 board used in the 16500C. May I use its attenuators? Is there a guide to opening and cleaning the attenuators of the 16533 board?
I cannot afford another board, unfortunately. Looks like all problems that I didn't had with the 16500 are concentrated in this 16702. Most boards I got were broken, the only perfect board (AFAIK) is the 16715 (or something) LA input board :\
Thanks Alexandre
---8<---Corte aqui---8<---
---8<---Corte aqui---8<---
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Re: Anybody have schematics or link for schematics of HP 3488A switch control unit?
I had one of these from Steve and it was perfect condition.
?
?
Nigel
?
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From: [email protected] [mailto:[email protected]]
On Behalf Of Steve A via Groups.Io
Sent: 24 April 2019 14:55
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] Anybody have schematics or link for schematics of HP 3488A switch control unit?
?
I have 3 of these 3488A's for sale in the UK if anyone needs them.
All pass self tested ok.
Steve
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Re: Make backup PCMCIA card for E8285A?
Linux has PCMCIA Utils, which will allow you to do
just about anything with any PCMCIA card.
-Chuck Harris
Steve Draper wrote:
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Based on my experience I'd say to give up on using anything other then MCE.
In my case I used an old laptop and had to open it up, cut a trace and
connect 12 volts to the write protect line to be able to write to a card. I
was then able to read/write/copy the firmware update, RFtools etc.
Steve VE7FM
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Re: Make backup PCMCIA card for E8285A?
Based on my experience I'd say to give up on using anything other then MCE. In my case I used an old laptop and had to open it up, cut a trace and connect 12 volts to the write protect line to be able to write to a card. I was then able to read/write/copy the firmware update, RFtools etc.
Steve VE7FM
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Re: HP 34401A repair and calibration
I could say many things re this. Lots of books on the topic.
On 2019. 04. 24. 10:00, Dave_G0WBX via
Groups.Io wrote:
| ? |
From:?Tam Hanna
Date: Tue, 23 Apr 2019 13:28:19 PDT?
That is the wrong approach. Wifes
always are but an auxillary
~ ~ ~
Try convincing them of that! ;-)
Dave B
|
|
|
--
With best regards
Tam HANNA
Enjoy electronics? Join 15k7 other followers by visiting the Crazy Electronics Lab at
|
Re: Make backup PCMCIA card for E8285A?
On Wed, Apr 24, 2019 at 10:52 AM, William Hole wrote:
Eiger Linear PCMCIA MEMORY Flash PC Card
Hi, There used to be a demo 30 day verson of MCE. looks like it is still available but I've not tried this site. Use precautions, virus scan etc. There are other sites offering downloads. MCE does not need an ELAN interface. An old laptop with PCMCIA built in and running Win XP is your best bet. The Ebay USB reader probably only works in ATA mode i.e. is basicall a USB to PATA adaptor with a PCMCIA socket and thus won't recognise your Linear Flash. The card you have is suitable for back-up but as I said before the 89xB series do not support writing to FLASH or other kinds of PROM, they can only write to NV-RAM cards. They can read RAM, NV-RAM, ROM, PROM and LINEAR FLASH. Don't pay Syncrotech for MCE there is no indication they have the right to sell it and they offer no support. Robert G8RPI.
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Re: Make backup PCMCIA card for E8285A?
Thanks so much to all for the replies! I have the original HP card “Agilent 11807A *100/Rev.B.02.01” which works in the E8285A, and I separately have the RF Tools files (both from Rick @ Amtronix — thanks!!).
I need a backup CARD because so much depends on it, and I can’t risk enabling writing on my HP store configs, etc.
On the E8285A, it is unfortunately very easy to erase the internal copies of the programs - requiring a reload from the card. That’s why I want to have a backup.
I bought a “?2MB Eiger Linear PCMCIA MEMORY Flash PC Card PN# EPM-2000F”?with write protect switch,? which the E8285A sees but says is unformatted. ?then won’t format when I try. ?It says it’s?“Write protected"?? when it is switched to?“Write enabled’. ?The E8285A manual says it will format only the first 1 MB of a card over 1 MB.
Wikipedia says there is a”The?card information structure?(CIS) is information stored on a PC card?“ and?“When a card is unrecognized it is frequently because the CIS information is either lost or damaged." ?(??).? Perhaps this could be corrected by reading the original image in Linux dd, and?writing to another card??
Questions, if anyone’s still with me <grin>:
1) Has anyone tried using Linux dd to duplicate the original card? ?If so, are special drivers or hardware needed? Perhaps antique PC with PC Card Type 1 hardware??
2) Does anyone know of cards for sale which can be formatted in the E8285A?
3) On Win7 and HP200lx, I can’t read either card with an eBay USB 2.0 PC Card Reader which says it supports? ? “PCMCIA, PC CARD ATA, ATA Flash storage” even after trying multiple driver versions.
4) I can’t see a way to try the ELAN?Memory Card Explorer (MCE) software?without paying hundreds of dollars? for a license and which ?probably? would also need their adapter?
Again, many thanks for all the help so far! ?Great Group!!
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[Weinschel 4372 signal source - any docs?]
Hi, I’m looking for any documentation or specifications for?Weinschel 4372 signal source.? I have this unit and it looks going very well so far.? Please share if You have any :) --
73
SQ5KTM
Michal
|
Re: Anybody have schematics or link for schematics of HP 3488A switch control unit?
I have 3 of these 3488A's for sale in the UK if anyone needs them.
All pass self tested ok.
Steve
|
Re: HP 34401A repair and calibration
| ? |
From:?Tam Hanna
Date: Tue, 23 Apr 2019 13:28:19 PDT?
That is the wrong approach. Wifes always are but an auxillary ~ ~ ~ Try convincing them of that! ;-) Dave B
|
|
|
|
Re: Clarification : Brass gears for the 8640B
Dave,
Why would I speak of misinformation if it wasn't? I'm really intrigued by the assumptions people are making in this thread. I have no motivation to "prove" what my gears are made of, whether they are "as good as gears made from blanks made/bought/machined in country X" or whether I have not copied someone else's design. What I do NOT do as a self-respecting professional is to make allegations or spread misinformation.
There will be no more replies from me in this thread. I do not want to expend my energy or others' from their real work. To the dozens of you on this very forum who have ordered and re-ordered my gears and given me excellent feedback, thank you once again! Doubters are free to believe what they wish to.
Best - Ram
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Re: HP Schottky Diode 1901-0533
Not knowing the circuit if the two diodes are in parallel that might make sense. ?On the other hand .9V seems high for a silicon diode let alone a schottky, I thought those went more toward the .3 to .4 level Regards, ? Stephen Hanselman Datagate Systems, LLC 3107 North Deer Run Road #24 Carson City, Nevada, 89701 (775) 882-5117?office (775) 720-6020?mobile s.hanselman@...
a Service Disabled, Veteran Owned Small Business DISCLAIMER: This e-mail and any attachments are intended only for use by the addressee(s) named herein and may contain legally privileged and/or proprietary information. If you are not the intended recipient, any dissemination, distribution or copying of this e-mail and any attachments is strictly prohibited. If you have received this e-mail in error, please immediately notify me and permanently delete the original and all copies and printouts of this e-mail and any attachments.
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On Apr 23, 2019, at 16:16, Jeff Zurkow via Groups.Io < jzurkow@...> wrote: I measure 0.918V at 100mA, which is about the working current in the circuit. ?Unfortunately only have one diode, need two.
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Re: HP 34401A repair and calibration
As discussed before, calibration does not necessarily mean adjustment.?
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On Apr 23, 2019, at 7:03 PM, Stephen Hanselman < kc4sw.io@...> wrote: You young whippersnappers, we are coming up on 40. The proper calibration interval is once per year on the acquisition date. Of course operational verifications can be done anytime.? Regards, ? Stephen Hanselman Datagate Systems, LLC 3107 North Deer Run Road #24 Carson City, Nevada, 89701 (775) 882-5117?office (775) 720-6020?mobile s.hanselman@...
a Service Disabled, Veteran Owned Small Business DISCLAIMER: This e-mail and any attachments are intended only for use by the addressee(s) named herein and may contain legally privileged and/or proprietary information. If you are not the intended recipient, any dissemination, distribution or copying of this e-mail and any attachments is strictly prohibited. If you have received this e-mail in error, please immediately notify me and permanently delete the original and all copies and printouts of this e-mail and any attachments.
On Apr 23, 2019, at 13:46, Dave McGuire < mcguire@...> wrote: On 4/23/19 3:26 PM, mike bryce wrote:This is going to sound silly, but this multimeter was a wedding gift from my wife, so it isn’t really only a piece of test gear
I’d like to keep it, but with a new display and calibration
?Pardon me for jumping in, but I don't think that sounds silly at all. Compatible spouses are a wonderful thing, and I have way too manyfriends who suffer through incompatible ones. ???????????-Dave-- Dave McGuire, AK4HZNew Kensington, PA
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Re: HP Schottky Diode 1901-0533
I measure 0.918V at 100mA, which is about the working current in the circuit. ?Unfortunately only have one diode, need two.
|
Re: HP 34401A repair and calibration
You young whippersnappers, we are coming up on 40. The proper calibration interval is once per year on the acquisition date. Of course operational verifications can be done anytime.? Regards, ? Stephen Hanselman Datagate Systems, LLC 3107 North Deer Run Road #24 Carson City, Nevada, 89701 (775) 882-5117?office (775) 720-6020?mobile s.hanselman@...
a Service Disabled, Veteran Owned Small Business DISCLAIMER: This e-mail and any attachments are intended only for use by the addressee(s) named herein and may contain legally privileged and/or proprietary information. If you are not the intended recipient, any dissemination, distribution or copying of this e-mail and any attachments is strictly prohibited. If you have received this e-mail in error, please immediately notify me and permanently delete the original and all copies and printouts of this e-mail and any attachments.
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On Apr 23, 2019, at 13:46, Dave McGuire < mcguire@...> wrote: On 4/23/19 3:26 PM, mike bryce wrote:This is going to sound silly, but this multimeter was a wedding gift from my wife, so it isn’t really only a piece of test gear
I’d like to keep it, but with a new display and calibration
?Pardon me for jumping in, but I don't think that sounds silly at all. Compatible spouses are a wonderful thing, and I have way too manyfriends who suffer through incompatible ones. ???????????-Dave-- Dave McGuire, AK4HZNew Kensington, PA
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Paul Bicknell
Alexandre Souza
Steve Draper
Michal Zawada