Sorry,
Tom beat me to it, I was having trouble with my "jems" misspelling.
On Wed, Jun 4, 2014 at 6:03 PM, Todd Micallef wrote:
> Willy,
>
> Have you contacted Fluke about getting a replacement transformer? I would
> guess it would cost a lot, but one of your other alte
Willy,
Have you contacted Fluke about getting a replacement transformer? I would
guess it would cost a lot, but one of your other alternatives is to buy the
external battery pack when it pops up on fleabay. The last one cost about
$700, but I bought mine for less than that. That would give you the
Willy asked me to post this
I just bought the battery pack on ebay for $700... that was me!
Yes, the transformer and regulator board are OK and I have
them powering the 732b right now!
Can you put this message on volt-nuts for me?
I can't figure out the process..
Thanks!
Willy
On
Roy,
The 732A uses the 3059Y-1-101 type cermet pot for the 10V adjustment. You
can use a simple plastic tweaking tool for adjustment. I believe you will
need a fairly long tool. You can shine a light into one of the other holes
to see the orientation of the pot. However, many people may prefer to
As a side note,
I recently filled out a survey request from Agilent as a response to my
recent 3458A calibration. Basically, they asked about any improvements that
would be welcome on the 3458A.
After giving them a small list of recommendations and requesting that
anything that could be implement
I agree with Joe that he is very intimately familiar with the 3458A. He said
he is the young guy with the least amount of time working on these meters
(approx 30+yrs).
Gary told me that all repairs are done to the component level. He also said
that the meters are tested to the same specs as a
Joe,
I have the above listed models. My opinion of the 540B is that it requires
a lot of work. Reading the manual, it suggests swapping cables for
repeatability to get a good reading.
It originally shipped with a mercury cell for the galvanometer so you may
get a D sized dead/leaking battery. It
In my previous post I meant the Fluke A40/A40A series current shunts. The
A45 is the current transfer switch used between the A40A shunts and 540B
for quicker measurements.
Todd
On Tue, Jul 8, 2014 at 10:52 PM, Mitch Van Ochten <
mi...@vincentelectronics.com> wrote:
> Joe,
>
> I used a Fluke 54
I would like to know more about your setup. Which source(s) are you using
for the input and which nanovoltmeter(s) are you using to transfer the 10V
TVC to your other converters? I remember you asking on PMEL forum about the
accuracy of using a 34420A nanovoltmeter. I did not see a response as to
w
Ben,
Do you have the 4921 Current Shunt Adapter option for the 4920? I have not
found any information on it other than what is listed in the 4920 user's
handbook.
It mentions the unit simulates the impedance of a 540B. The guide says that
the instructions are included with the 4921. Do you happen
The remark about calibrating the resistors was merely an example of how I
thought you may have been transferring the calibration of the 10V TVC. My
first thought was that you compared the 10V TVC to the next closest model
at fixed points. The inter-comparison would then continue from that model
to
Chris,
I believe the current and resistance functions are on the same board. My 4700
is missing one board and it has both missing features.
Todd
Sent from my iPad
> On Jul 16, 2014, at 8:48, Chris wrote:
>
> Thank you for the bad news :( I am starting to come to terms with the
> difficulty o
I don't have access to the schematics right now. For the DC section, I
would think that the selected reference array would be the only difference.
The firmware will dictate the model.
I have not compared the option 10 board in the 4700 to the 4000A but I
think there will be little difference there
I am not sure if Fluke had matched tempco spare parts, but you can look at
some NOS resistors from Fluke on ebay. They may be a good start and some of
the pricing isn't bad.
Todd
On Thursday, July 17, 2014, Randy Evans wrote:
> Frank,
>
> The high cost is my concern, although high performance d
They are nice to look at, I have two of them. Get a couple for bookends, at
least they can be somewhat functional.
Todd
On Fri, Jul 25, 2014 at 3:52 PM, Pete Lancashire
wrote:
> Looked closer 705489 is the serial number.
>
> Was just looking at one on Epay for display not for use.
>
> -pete
>
Mark,
I am using the STMicroelectronics M48Z12 series in at least one of my
3458A's. I had trouble sourcing one of the two different memory modules
from a reputable seller when I replaced my NVRAM. I purchased a DS1220
previously from Jameco and it died shortly afterward. The datecode on the
Jamec
> happened. Maxim can tell you pretty quickly if the part is counterfeit.
>
> And, they will probably both send you a replacement either way.
>
> -Chuck Harris
>
> Todd Micallef wrote:
>> Mark,
>>
>> I am using the STMicroelectronics M48Z12 series in at leas
Randy,
I am looking forward to your test results. Does your 845 have the separate
board for the chopper amp as mentioned in the change/errata sheet dated
7/93? I have not seen any further documents from online sources that
references this change. I have two AR models and it appears support for it
Randy,
I have had two 3458a that had bad front / rear switches. It was easy to
determine during the calibration of the Cal 0 that failed. A copper short
across both of the inputs, as per the calibration procedure, showed more than
.5 ohm in 2-wire mode on the lowest range. The resistance was no
Tony,
I have looked for the perfect connector for all types of measurements. I
came to the conclusion that the type of measurement will dictate the type
of connector. I prefer the solder type and would never consider using a
screw type for any of my cables. I am sure they have an application
somew
Since it was brought up about the possible leakage between Guard to Low, I
decided to check three 3458A. All three measured "open" resistance between
the two connectors in the open position as measured with an 8846A.
On two, I measured ~0.14-0.17 ohms with the switch closed. The first two
look fin
I meant to say Guard and Lo.
On Sat, Aug 16, 2014 at 5:47 PM, Todd Micallef wrote:
>
> ...The CLIP shows nothing else in between ground and guard...
>
> Todd
>
>
> On Fri, Aug 15, 2014 at 11:06 AM, Jason Watson
> wrote:
>
>> I've also seen excessive Guard
I recently purchased a defective 9578 and have been able to get it working
(so far). Everything appears to be responding now through the front panel
and the serial port. I wanted to let the meter run for several days to
settle in but with the recent postings of Schaffner input filters failing
short
, Todd Micallef wrote:
>
> The new model is the FN372-2-22 and all pinouts appear to match based on
> manufacturers datasheets. The only snag that I have run into is a 1Meg
> resistor soldered across the output of the filter. I looked in the service
> manual and there is no mention
Randy,
Two of mine read in the 3.7-3.8K range, another reads in the 4.2K range. It
is a good sign if the reading dropped in a few hours after turn-on. I
believe the lower thermistor readings indicate the older 732A oven. Some
minor changes were made and both manuals are available on Didier's site.
Dave,
Thanks for the heads up. I went ahead and verified that all pins matched
the schematic by changing the cam to the four settings and all are as
expected. The new cams have "230vac" printed on them and the old one has
"220 vac".
I went ahead and installed the old one to prevent any future issu
Randy,
I think there is a comma between the 0 and the password.
Todd
On Sun, Aug 17, 2014 at 3:25 PM, Randy Evans
wrote:
> Bill,
>
> You are very helpful and I really appreciate it.
>
> I entered BLUE-C-03458 and I still get the ERR message (106, "OUT OF RANGE
> -- CAL secured"). That would
Randy,
Next thing you know, you will be looking at a 10K standard resistor to go
with that 3458A and possible 732A.
Todd
On Sun, Aug 17, 2014 at 3:51 PM, Randy Evans
wrote:
> Todd and Bill,
>
> Thanks for the input. The 3.6 K thermistor reading seems viable and i will
> pursue it further.
>
Randy,
Do you mean that you can select it, but it won't give you a temperature? Or
do you mean that you can't find it in the menu? If you go to the MENU
option, select FULL or something like that. It should enable all the extra
menus.
If you can see it, I believe all you have to do is find it und
Stan,
I recently picked up some of these ...
http://www.douglasconnection.com/Furez-TSTWP30NP-Bare-Copper-Banana-Plug-Connectors-Pair-FZTSTWP30NP.htm
They are a little pricey and are made for 12ga wire. I think they are OK
for semi-permanent use. A lot of use will probably scratch the soft metal.
Stan,
I have seen this Fluke book mentioned occasionally. I am not sure if has
the tutorials that you seek. It is advertised as specific to dc/ lf ac.
http://www.amazon.com/Calibration-Philosophy-Practice-Fluke-Corporation/dp/0963865005
Todd
On Tue, Aug 19, 2014 at 7:35 PM, Stan Katz wrote:
John,
Don't forget to measure your 5V power supply output. I doubt you are having
a problem with it but the NVRAM write is disabled below a certain voltage
(~4.25v)
Todd
On Wed, Aug 20, 2014 at 6:50 PM, wrote:
> the easy way to read nvram through usb is a usb-programmer that has your
> ram in
I have been looking at the
>
> http://www.ebay.com/itm/Universal-EEPROM-Flash-SPI-BIOS-24-25-BR90-93-USB-Programmer-6000-CHIPS-SP8-B-/371031966902?pt=LH_DefaultDomain_0&hash=item56633a84b6
>
> Do you think that would do the chips?
>
>
> On Wed, Aug 20, 2014 at 4:25 PM, Tod
Randy,
You have two possible choices. It can be configured with 4 x 6v 4Ah
batteries or 2 x 12v 7Ah batteries. Hopefully the previous owner has
modified the battery pack already. A couple of mine needed a nibbler tool
to remove enough of the aluminum cover that fits over the tops of the
batteries.
Randy,
I looked at the 3458a input impedance, and it is difficult to get the meter set
to the FixedZ (10M) mode. However, the 100v range is 10M. It should default to
HiZ on reset.
I forgot to mention to check the outputs and guard resistance to ground. One of
my 732a had some foam baffling und
t sure what to think about the drift on the other readings unless there is
> some sort of 'dirt' on the 1 V and 1.018 V binding posts and/or ground.
>
> Good luck.
>
> Joe
>
>
>
> -Original Message-
> From: volt-nuts-boun...@febo.com [mailto:volt-nu
Never mind. I tested it myself. You should be able to get the in cal led
working without batteries.
Todd
On Sat, Aug 23, 2014 at 7:20 AM, Todd Micallef wrote:
> The output impedance of both the 1v outputs is ~1k ohm. I wonder if Randy
> could check the 3458a input impedance with a 1
> Joe
>
> -Original Message-
> From: volt-nuts-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On
> Behalf Of Todd Micallef
> Sent: Saturday, August 23, 2014 6:21 AM
> To: Discussion of precise voltage measurement
> Subject: Re: [volt-nuts] 732A drift
>
> The output i
eral Panasonic 12V 7 AH batteries that I
> > keep topped off and they have very low current draw (~2 to 3 mA at 13.5
> > VDC) when charged and at their float voltage, so I am pretty sure they
> are
> > in good condition. I will look at getting those in the units after I
> > a
Chris,
Where do you live? I just had some keys made last week for my Datron units.
The first set fit my 4000A and 1071, but they did not fit my 4700. The
4000A key looked more like the pictures online, but the 4700 was completely
different.
Someone may have rekeyed or damaged the lock on the 4700.
lt are
3
> lead acid cells. If one of the 6 cells in the 12 volt battery go bad then
> the whole battery has to be changed. So you better buy good quality 12
volt
> batteries.
>
>I just can't seem to source batteries locally easily at a reasonable
> price. So I order
Mark,
If you need any scans or measurements, let me know. I have one that will be
disassembled for the next 24hrs. I can get this for you tomorrow evening before
I replace the batteries.
Todd
Sent from my iPad
> On Aug 25, 2014, at 21:10, Mark Sims wrote:
>
> I have a 732A that is missing i
I uploaded the user manual for the 4920 model some time ago. Of note, the 4920
was offered with option 10. This added four additional millivolt ranges. I have
this meter with the option 10. I think it may be a better alternative to the
4920m if you don't need the wideband option. Some of the 492
http://www.hparchive.com/appnotes.htm
http://www.analog.com/static/imported-files/application_notes/41727248AN_347.pdf
Sent from my iPad
> On Sep 4, 2014, at 9:48, Dave Daniel wrote:
>
> Do you mean that they are on the web, or that they should be and you haven't
> found them, or that they
You can try contacting the local Keysight service center or the one in the
USA and give them the serial number. They might be able to tell you if it
has ever been serviced by them and what has been replaced. They were able
to tell me the history of mine. Some meters never go back after manufacture
I have replaced a fan in one of my 3458A. I used this one ...
http://www.digikey.com/product-detail/en/622L/381-2266-ND/1131198
I contacted ebm-papst with the original part number. They were not able to pull
the original specs to offer a newer sub. I happened to notice it was made in
West Germ
I wonder if Ametek can be persuaded to release any official calibration /
performance testing procedures if they are no longer supporting the 7081. Does
any one here have any contacts at Ametek?
Todd
Sent from my iPad
> On Sep 28, 2014, at 12:14, J. L. Trantham wrote:
>
> I know Ametek stopp
I wanted to pass on some information that may not have been previously
discussed.
I just finished working on a 732A with minor issues. I replaced the R10 and
R20 pots on the A3 board just like on my other 732A's along with the two
big caps C1 and C3. After performing the same battery charger proce
How about the ones recommended for the 3458a?
http://www.newark.com/agilent-technologies/34137a/test-lead-1kv/dp/01P1238
It is getting harder to find quality leads that fit a standard binding post.
Todd
Sent from my iPad
> On Oct 7, 2014, at 16:25, Mark Kahrs wrote:
>
> What probes would you
Randy,
I had ordered the connectors from Fluke, but they do not come with the
contacts.
The best place to get one is from Kensington Electronics. They cost me
$9.06 ea. back in March. The shipping costs were not included.
Unfortunately, they have a minimum order and you would need to order about
panel was removed.
Todd
On Tue, Oct 14, 2014 at 4:52 AM, wrote:
> do you know what the part number is for the 7081 connector? I just
> purchased a 7071 and would need one.
> thanks
>
>
> > Gesendet: Dienstag, 14. Oktober 2014 um 03:26 Uhr
> > Von: "Todd M
Charlie,
Calogic appears to sell directly, they may even send you a sample. I guess
it wouldn't hurt to ask.
Todd
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volt-nuts mailing list -- volt-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
and follow t
David,
Congratulations on your new (to you) gear. I had typed a long drawn out
response that was putting me to sleep. I decided to reduce it to a "couple"
of paragraphs.
The problem with testing / calibrating standards and references is that you
need an even more accurate measurement system, a ca
Andreas has a good thread on EEVblog
http://www.eevblog.com/forum/projects/t-c-measurements-on-precision-resistors/
I am guessing that you want to calculate the alpha and beta coefficients
over a certain temperature range? I am also interested in doing something
similar, having collected differen
Dallas,
Thanks for the information.
Would you be opposed to uploading it to the KO4BB website? I think Didier
could place it in a Fluke 845AB/AR folder. I could upload it with a copy of
the manuals and send him an email.
Todd
On Sun, Nov 23, 2014 at 10:02 PM, Dallas Smith wrote:
> How do I ma
I have uploaded the mod file to the ko4bb ftp server. I could not find the
AR or AB manuals so I also added them. Right now they are sitting in the
Recent Uploads directory.
Todd
On Sun, Nov 23, 2014 at 10:31 PM, Dallas Smith wrote:
> Thank you, that will be fine. I'm getting swamped with requ
Randy,
I sent you a copy of the file to your email address.
Todd
On Wed, Nov 26, 2014 at 12:18 PM, Randy Evans
wrote:
> I have finished the design and analysis (LTSpice) and I am preparing the
> BOM and doing a PCB layout now (ExpressPCB). I am hoping to finish the
> work over the Thanksgivin
I did the same for my Datron 4700 and Valhalla 2724a. I took a picture of that
ebay listing to the locksmith for a laugh. The lock on the 4700 came out easily
once the outer threaded cap of the lock was removed.
Todd
Sent from my iPad
> On Dec 7, 2014, at 11:10, David C. Partridge
> wrote:
>
Andrea,
If the problem is related to temperature, maybe you can find the offending
part by freezing it?
Todd
On Sat, Dec 13, 2014 at 1:46 PM, Poul-Henning Kamp
wrote:
>
>
> In message <20141213183546.ga27...@sol.ermione.com>, "Andrea Baldoni"
> writes:
>
> >Someone has the detailed des
I believe the 1281 uses the LTZ1000. The datasheet mentions dual references.
My 4920 has both a ltz1000 and a lm399. I think you can find pics of the
1281 dual ref setup on eevblog.
I would not be surprised if the 8508a has a similar configuration.
Todd
On Saturday, December 20, 2014, Richard M
Has anyone had any Gerber file compatibility issues with batch pcb
manufacturers? For example, pad sizes or trace widths not matching what is
on the screen.
Todd
On Mon, Jan 5, 2015 at 4:41 PM, David C. Partridge <
david.partri...@perdrix.co.uk> wrote:
> Lack of forward/back annotation would kil
I have not seen inside a 1281, but my 4920 has a 3V battery for the cal
constants. I am guessing that the unit would have flagged error codes
2110-2113.
Looking at the specs, it looks like the meter uses the 1V and 100mV ranges
for measuring resistance based on the selected range and whether or no
There is currently a thread on EEVBlog where one has already been built. I
believe it can be purchased once the final layout is completed.
http://www.eevblog.com/forum/projects/project-kx-diy-calibrator-reference-sourcemeter/
Todd
On Fri, Jan 30, 2015 at 8:24 AM, Dr. David Kirkby (Kirkby Microwa
Hendrik,
Thanks for sharing your design. I have looked at the Rhopointasia.com
website and I noticed they had the squaristors. They appear to be of a
similar size to the Vishay metal foil resistors. It would appear you might
save some space on your design using radial packages. I have not seen the
A Data Proof scanner seems to be the standard of some primary labs. They
don't show up often on the auction site.
This company makes one that fits the front of a 732B. I have never seen it
in use.
http://www.hpd-online.com/reversing_switch.php
There also appears to be a Guildline 9600 up for auc
Definitely good price. My replacement display board for a Keithley 2400 was
~$480.00 US. I could have replaced a few 3458A boards for a little more.
Agilent typically sent me parts next day for no additional overnight charge.
Keithley/Tek was ~$30 for standard shipping.
The bad thing is that th
I sent in a 3458A for calibration last year. They called me and told me the
GPIB port was not functioning and subsequently the calibration could not be
performed. I gave approval for the repair to fix it after weighing shipping,
and risking another failure on the actual calibration.
They called
Frans,
Do you perform an in-house calibration with a 10V reference and 1 ohm & 10k
resistors? I have been studying the recommended calibration intervals of
Fluke's 57xx series calibrators and I wonder how well the unit maintains its
stability over long intervals between trips to a cal lab.
Als
The 5700A5720A verification test lists a maximum deviation from nominal on
the resistance ranges. Is there any information on how well Fluke's hybrid
resistors are maintaining their specs over the lifetime of the calibrator?
Anyone have access to long term records of the resistance values?
Todd
Frans,
I had two 3458a fail that resistance cal. I eventually replaced the front /
rear switch. The easy way to test it is to measure the resistance with the
front panel jumpered and then short the internal black and white cables at
the A1 board and measure the difference. I also had one with a b
I used a Fluke 5100B and 8920A for my SCAL calibration. I got lucky and it
passed at Agilent. I think if you use a 3325A , you should get results that are
close.
Todd
Sent from my iPad
> On May 20, 2015, at 15:46, Electronics and Books via volt-nuts
> wrote:
>
> It is stated that the ac cal
I just read your post again and missed that you reflowed the solder joints.
I will have to stop reading posts with my phone.
Todd
On Wed, May 20, 2015 at 3:52 PM, Todd Micallef wrote:
> Frans,
>
> I had two 3458a fail that resistance cal. I eventually replaced the
> front / rear
Randy,
I made my own version of the Fluke 5440A-7003 cables here ...
http://us.flukecal.com/products/accessories/test-leads-probes-and-clips/5440a-7003
I bought some Belden 8719 cable, blue Pomona patch cables (B-18-6), and
some gold-plated spade lugs from here http://jswilley.com/Accessories.h
David,
Depending on the time frame needed for these resistors you can order many
(but not all) of the parts from Farnell. I believe the Rhopoint resistors
are the recommended brand. The high value resistors could be Caddock USF
series.
Another alternative would be to contact Edwin Pettis. He manu
David,
Congratulations on your find. It looks like you have just added several new
'projects' to keep you busy. I found a reference to those cables on
pmelforum here ...
http://www.pmelforum.com/index.php?topic=2112.0
If no one here can help you, the folks there might still have some 7105's
layi
Here is a DIY guide to making some lab standards. It is detailed with some
component values.
http://nopr.niscair.res.in/bitstream/123456789/4848/1/JSIR%2065%286%29%20510-513.pdf
On Wed, Aug 19, 2015 at 8:48 PM, Dave M wrote:
> Here's a paragraph from IETLab's web site on how their inductance
>
I was going to suggest a Fluke 731A/B but there wasn't anything listed on
auction this morning. It appears someone has just listed one for $165
http://www.ebay.com/itm/FLUKE-731B-LABORATORY-REFERENCE-DC-VOLTAGE-STANDARD-Model-731B-/151814122701?hash=item2358d3accd
On Sat, Sep 12, 2015 at 11:59 AM
Dave,
What is the problem with the original reference? I have not heard of too
many failing. There was also a reply from Hank on another message. Perhaps
he can provide the needed parts from a 732A?
Todd
On Mon, Sep 14, 2015 at 6:45 PM, Dave M wrote:
> After making a mess in my garage while se
I noticed that some of the vendors listed overall end-end tcr and at least
one that listed the wiper tcr too. Hopefully you can get the datasheets
with both.
Todd
On Saturday, September 26, 2015, David Garrido wrote:
> Thank you for all of the input on this folks.
>
> Does anyone have a copy of
Bill,
I would be interested in a copy. I tried getting the document earlier this
year but the USPS destroyed the only copy the shipper had.
Todd
On Wed, Sep 30, 2015 at 10:50 AM, Bill Gold wrote:
> David:
>
> Sounds like you got a good find. Clean, batteries hold a charge and
> has
> been
Bill sent me a copy.
I have already uploaded it to the KO4BB ftp server and it is sitting in the
Recent Uploads inbox.
Todd
On Wed, Sep 30, 2015 at 12:40 PM, David Garrido wrote:
> Thank you Bill. I would like a copy.
>
> David
> ___
> volt-nuts mai
The seller has posted more internal photos
Sent from my iPad
> On Oct 22, 2015, at 10:18, ludger.len...@gmx.de wrote:
>
> The pictures show error 9005, means "Serial Interface Error". This is the
> typical error, if the Analog-Board is not installed.
>
> BR
> Ludger
>
>
>
> Gesendet:
I recently picked up a 1281 that is throwing a couple of errors. While
researching the problem, I looked for the SelfCAL description and did not
see anything conclusive. I will pull out my schematics and see if there are
any references to a particular module. I was under the impression they were
us
Ok, I will look at them again.
Sent from my iPad
> On Oct 30, 2015, at 07:26, Frank Stellmach wrote:
>
> Hello Todd,
>
> many thanks for the reference schematics.
>
> But that's not the SelfCAL module.
>
> This should be capable of doing precise 10:1 ratio transfers, (I'm guessing),
> so r
No problem. I was just looking back at the documents wondering if I missed
anything. The transformer solution is interesting and I see that the 8508A
has a second low voltage transformer (T1). I have no idea if it performs
the same function using a different calibration.
On Sat, Oct 31, 2015 at 9:
On the subject of the Datron/Wavetek 1281, the one I received did not have a
calibration key. It did have a jumper wire connected across the cal switch
which I would like to remove. I want to keep it in its original
configuration if possible.
I do have keys for the Datron 4700 but the key does not
Unfortunately, when I had my keys made for the 4700, I took the lock out of
a broken 1071 to the locksmith. I originally showed them photos of an
actual key and they looked at me like I was crazy. I could only find two
locksmiths near me for the 4700 and a Valhalla 2724A. Both wanted a lock
before
on Thursday
and hopefully have something by Friday at a local locksmith (including
picture from auction). If I am successful, I can help get copies made for
other 1271/1281 owners.
Todd
On Sun, Nov 1, 2015 at 8:30 PM, Tom Miller wrote:
>
> - Original Message - From: "To
Do you have a high Z input dmm on the 10V range? Perhaps you can characterize
its impedance with another high value resistor of known value and then connect
the UUT to the meter and measure its drop across the input with a test voltage.
Todd
Sent from my iPad
> On Nov 13, 2015, at 11:15, Andr
I have searched for the original part listed on my 181 cable ITT-Canon
CA3106B16-11P-A105 but never had any luck finding another to make a
shorting plug.
I did purchase a MS3106-E16-11P that fits it perfectly. The original
connector appears to be gold plated(?) and the MS connector is silver
plate
PeLuLe,
I am currently working on two 1281's. If you have anything you would like
me to try, let me know. I am certain my cal constants are not good on one
of them. The battery was just changed a few days ago and it appears to be
the original from '87. I also had some intermittent NVRAM errors.
R
https://xdevs.com/fix/d1281/
On Sun, Feb 7, 2016 at 6:43 PM, wrote:
> Hi Todd,
> have tried to find the information @ xDevs. No luck.
> Is there a link you can share?
>
> BR
> PeLuLe
>
>
> > Gesendet: Sonntag, 07. Februar 2016 um 21:59 Uhr
> > Von: &qu
project.
> Link:
> https://www.dropbox.com/sh/rxeb86eq9m35tyu/AADwDNeCYQWp4RSZ2rVQ3y-ua?dl=0
>
> BR
> PeLuLe
>
>
>
> > Gesendet: Montag, 08. Februar 2016 um 00:56 Uhr
> > Von: "Todd Micallef"
> > An: "Discussion of precise voltage measurement
Pete,
Congratulations on your win.
In addition to what Joe posted, you should change the Schaffner input
filter/selector. Going through my notes, I am pretty sure I got the
replacement from Digikey, PN# 817-1167-ND. I think the voltage selector
inside has different voltages than the original and
I have seen the photos of one in a 3458A go bad. Not a pretty sight but it
looks like the gunk is removable.
The input filters are being changed out on most of my older gear
(Fluke,Keithley,Solartron,Datron) and not all of it is Schaffner. I think
that anything going back that far and is potential
Try keiconn.com
Kensington Electronics is a distributor, they have a minimum order but you
will probably meet it.
Todd
On Tuesday, March 15, 2016, Pete Lancashire wrote:
> Anyone recommend a North American source ? or have one they are not using ?
>
> And where asking, any metrology shops one
Bert,
I did a test not that long ago for another volt-nut by disconnecting the
cable between the digital and DCV boards. I got the following error:
"9005.9 Pon tru/compl 00173A".
One of mine came with a 9005.7 00150C error and it turned out to be a
disconnected cable on one of the option boards
I will get it this evening. Hope to be finished with work within the next
couple of hours.
On Thursday, April 14, 2016, Bert Kachler wrote:
> Hi Todd and ??,
>
> thanks for your answers!
> I think it is a good suggestion to
> try to see first whether the Eproms are intact. Firmware is
> Version
comes to mind is the EPROMs are failing. I plan
on upgrading both soon so I can try it again.
Todd
On Thu, Apr 14, 2016 at 5:21 PM, Todd Micallef wrote:
> I will get it this evening. Hope to be finished with work within the next
> couple of hours.
>
>
> On Thursday, April 14, 201
Sure. I have a couple of broken fasteners. What is smallish quantities? I
would be willing to take 10 or more if a minimum quantity is needed.
Todd
On Sun, Apr 24, 2016 at 10:33 AM, David C. Partridge <
david.partri...@perdrix.co.uk
> wrote:
> I think I've managed to identify the fasteners used
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