The HP 3439A has been repaired. It was C8 on A9 that had failed. I then zeroed the readout it using a calibration procedure found at . Thanks to everyone who replied. I also have a service manual on the way to me from Joe VE7LBI. Question - I zero the readout after a 30minute warmup. All ranges read 0000 with the + & - flashing alternately. The Int Check -8000 is also set per the precedure. It will stay like that (zeroed) all day. If I turn it off then back on the next day - the zero calibration is off - not by much - sometimes +0001 or -0002. I can zero it again - and it will stay like that all day. Is this normal or am I being anal about a +35 year old instrument? Thank BL --- In hp_agilent_equipment@..., "computeruser04" <computeruser@s...> wrote: Hello All
I was just given an old HP 3439A Digital Voltmeter to play with.
It has the 3443 High Gain/Auto Range plugin. The Nixie tubes
light but display random digits. I have searched for a schematic
and found nothing. Really, like others have said here before, its
the challenge to see if I can get it functioning, so any info about
it is appreciated.
Thanks
BL
|
Hello Robin
I have operators book scanned-will You have them
uploaded?
??????????? Best
Regards
?????????????????????????????
Hardy
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Show quoted text
----- Original Message -----
Sent: Thursday, May 06, 2004 10:00
PM
Subject: [hp_agilent_equipment] Manual
Wanted
Hi,
Has anyone got a manual that I can copy, scan or
whatever for a HP
1740A?? Or point me towards where I can download
one?
All costs re-imbursed.
Regards
Robin
--
Robin
Birch
|
Original Message:
Date: Thu, 6 May 2004 21:00:54 +0100
From: Robin Birch <robinb@...>
Subject: Manual Wanted
Hi,
Has anyone got a manual that I can copy, scan or whatever for a HP
1740A? Or point me towards where I can download one?
All costs re-imbursed.
Regards
Robin
--
Robin Birch
Robin,
I have bunches of HP manuals, at: .
For the 1740A, it loos like all I have is the operator's guides, not a service manual.
I think ONE of the ones that I have might also be downloadable from agilent.com .
Good luck!
Tom Gootee
tomg@...
|
Hi,
Has anyone got a manual that I can copy, scan or whatever for a HP 1740A? Or point me towards where I can download one?
All costs re-imbursed.
Regards
Robin
--
Robin Birch
|
Sorry, it was a typo, I should have typed 3440. The manual is operating
and service with schematics.
My e-mail is:
joseph@...
Thank you
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----- Original Message ----- From: "computeruser04" <computeruser@...> To: <hp_agilent_equipment@...> Sent: 02 May 2004 11:53 AM Subject: [hp_agilent_equipment] Re: HP 3439A Joe
I am interested in the manual if it is a service manual with
a schematic. You say it is the same as the 3449 (typo?)
Is it the same as the 3439 except for the sampe rate?
If so I am interested. leave me an email or web address
Thanks
BL
--- In hp_agilent_equipment@..., "Joseph Orgnero"
<joseph@p...> wrote:
Jorgen,
I have an original manual for the HP 3440A voltmeter, which is the same
as the 3449 except for the sample rate, cost U$S 12.00 plus shipping.
Let me know if interested.
Thank you.
Joe Orgnero VE7LBI
----- Original Message -----
From: "Jorgen Lund-Nielsen" <dj0ud@w...>
To: <hp_agilent_equipment@...>
Sent: 01 May 2004 06:05 PM
Subject: [hp_agilent_equipment] Re: HP 3439A
--- In hp_agilent_equipment@..., "computeruser04"
<computeruser@s...> wrote:
Hello All
I was just given an old HP 3439A Digital Voltmeter to play with.
It has the 3443 High Gain/Auto Range plugin. The Nixie tubes
light but display random digits. I have searched for a
schematic
and found nothing. Really, like others have said here before,
its
the challenge to see if I can get it functioning, so any info
about
it is appreciated.
Thanks
BL Did you check all supply voltages for ripple?
Power Supplys has to be checked first, ever!
Jorgen
Yahoo! Groups Links
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Printer at MyInks.com. Free s/h on orders $50 or more to the US & Canada.
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Yahoo! Groups Links
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Joe I am interested in the manual if it is a service manual with a schematic. You say it is the same as the 3449 (typo?) Is it the same as the 3439 except for the sampe rate? If so I am interested. leave me an email or web address Thanks BL --- In hp_agilent_equipment@..., "Joseph Orgnero" <joseph@p...> wrote: Jorgen,
I have an original manual for the HP 3440A voltmeter, which is the same as the 3449 except for the sample rate, cost U$S 12.00 plus shipping. Let me know if interested.
Thank you.
Joe Orgnero VE7LBI
----- Original Message -----
From: "Jorgen Lund-Nielsen" <dj0ud@w...>
To: <hp_agilent_equipment@...>
Sent: 01 May 2004 06:05 PM
Subject: [hp_agilent_equipment] Re: HP 3439A
--- In hp_agilent_equipment@..., "computeruser04"
<computeruser@s...> wrote:
Hello All
I was just given an old HP 3439A Digital Voltmeter to play with. It has the 3443 High Gain/Auto Range plugin. The Nixie tubes
light but display random digits. I have searched for a
schematic and found nothing. Really, like others have said here before,
its the challenge to see if I can get it functioning, so any info
about it is appreciated.
Thanks
BL Did you check all supply voltages for ripple?
Power Supplys has to be checked first, ever!
Jorgen
Yahoo! Groups Links
|
Jorgen,
I have an original manual for the HP 3440A voltmeter, which is the same
as the 3449 except for the sample rate, cost U$S 12.00 plus shipping.
Let me know if interested.
Thank you.
Joe Orgnero VE7LBI
toggle quoted message
Show quoted text
----- Original Message ----- From: "Jorgen Lund-Nielsen" <dj0ud@...> To: <hp_agilent_equipment@...> Sent: 01 May 2004 06:05 PM Subject: [hp_agilent_equipment] Re: HP 3439A --- In hp_agilent_equipment@..., "computeruser04"
<computeruser@s...> wrote:
Hello All
I was just given an old HP 3439A Digital Voltmeter to play with.
It has the 3443 High Gain/Auto Range plugin. The Nixie tubes
light but display random digits. I have searched for a schematic
and found nothing. Really, like others have said here before, its
the challenge to see if I can get it functioning, so any info about
it is appreciated.
Thanks
BL Did you check all supply voltages for ripple?
Power Supplys has to be checked first, ever!
Jorgen
Yahoo! Groups Links
|
Ripple is about 1.5v on the 150v supplies and about .5v on the 50v supply. This site: has the calibration procedure for the 3439A which gave me some more good information. This site: mentions the 3440A which is very similar and their unit has the same symptoms: "The nixie tubes light up, but multiple segments are on simultaneously" so I am thinking this problem is common on these units. Thanks for the replies so far. BL --- In hp_agilent_equipment@..., "Jorgen Lund-Nielsen" <dj0ud@w...> wrote: --- In hp_agilent_equipment@..., "computeruser04"
<computeruser@s...> wrote:
Hello All
I was just given an old HP 3439A Digital Voltmeter to play with.
It has the 3443 High Gain/Auto Range plugin. The Nixie tubes
light but display random digits. I have searched for a schematic
and found nothing. Really, like others have said here before, its
the challenge to see if I can get it functioning, so any info about it is appreciated.
Thanks
BL Did you check all supply voltages for ripple?
Power Supplys has to be checked first, ever!
Jorgen
|
--- In hp_agilent_equipment@..., "computeruser04" <computeruser@s...> wrote: Hello All
I was just given an old HP 3439A Digital Voltmeter to play with.
It has the 3443 High Gain/Auto Range plugin. The Nixie tubes
light but display random digits. I have searched for a schematic
and found nothing. Really, like others have said here before, its
the challenge to see if I can get it functioning, so any info about
it is appreciated.
Thanks
BL Did you check all supply voltages for ripple? Power Supplys has to be checked first, ever! Jorgen
|
I
don't know if it will make you feel any better but I have a Fairchild Model
7000, 5 1/2 digit Nixie tube?DMM? and I use it all the time.?
Works perfect.? I also have a Systron Donner 6152A, 500 mHz Nixie freq.
counter and it also works perfect.? I love Nixies -no reading glasses
required!? The pinnacle of display technology, IMHO, ?was planar
gas.? LCD displays were the downfall of modern electronics- screw low power
consumption!?
?
Sorry
I can't help you with the schematic.? There are many vintage manual
resellers (and some free) ?out there? try:
?
?
?
?
?
?
?
?
?
?
Good
Luck!
toggle quoted message
Show quoted text
Hello All
I was
just given an old HP 3439A Digital Voltmeter to play with.
It has the 3443
High Gain/Auto Range plugin. The Nixie tubes
light but display random
digits. I have searched for a schematic
and found nothing. Really, like
others have said here before, its
the challenge to see if I can get it
functioning, so any info about
it is appreciated.
Thanks
BL
|
Hello All
I was just given an old HP 3439A Digital Voltmeter to play with.
It has the 3443 High Gain/Auto Range plugin. The Nixie tubes
light but display random digits. I have searched for a schematic
and found nothing. Really, like others have said here before, its
the challenge to see if I can get it functioning, so any info about
it is appreciated.
Thanks
BL
|
Neat document from Agilent
Quite a few typos scattered throughout, but still a very interesting
historical document on HP/Agilent gear through the ages.
(36 pages, about
2 MB)
-- john KE5FX
|
Re: HP 8552A Service Manual Download
you can find the service man. for the B version at BAMA
site
Elie
?
|
HP 8552A Service Manual Download
In order to repair my instrument I looking to downloadable HP 8552A
service manual
any Help Apreciated
Gabriele
|
Hello all,
I have the following "vintage" manuals for sale:
HP 522B counter $ 5.00
HP 5253B frequency converter (for 5245L counter) $ 10.00
HP 5440A digital DC voltmeter $ 10.00
HP 403B AC voltmeter (copy) $ 5.00
Prices are U$S plus S&H
Thanks
Joe Orgnero VE7LBI
|
Re: 3455, 3456, &3457 multimeters
Dave Haupt wrote: I have a Fluke 8050A, a benchtop 4.5 digit DMM with
battery option. hi Dave, What are the magic buttons to invoke the self test on the 8050A please? Cheers Ian Du Rieu
|
Re: 3455, 3456, &3457 multimeters
That completes the continuum for me, then!!!! Very
cool.
I have a Fluke 8050A, a benchtop 4.5 digit DMM with
battery option. It's now 20 years old. I have never
calibrated it. I take it to work once per year, and
check it against an HP 3458A (8 1/2 digit calibration
standard) and it's always right on, down to the last
digit of the Fluke. On eBay, they're about $50.
My question, though, is what are the "bargain of the
century" DMMs that are HP-IB controllable? Or serial,
or USB or....? The 34401A is too steep for me, given
that I probably want several remotable DMMs.
73,
Dave W8NF
=== In reply to ===
From: "John Miles" <jmiles@...>
Subject: RE: 3455, 3456 & 3457 multimeters
A friend in town (W7TOM) just bought an HP 3478A, and
we were both very
favorably impressed by it. I have a HP 34401A on my
bench which I
bought
brand-new for $1K, and the 3478A is almost as good at
20% of the price.
It
has one less digit of resolution than the 34401A (5.5
instead of 6.5,
either
are more than sufficient for nearly any practical
purpose and much more
than
any handheld can offer), and a couple fewer bells and
whistles (dB,
frequency...) that I don't use anyway. Calibration is
simple, with no
need
to open the cabinet, and the manuals are excellent.
Bob's 3478A showed
an
invalid calibration checksum on one DC voltage range,
so we set it up
against my 34401A and he was good to go. The other
ranges were so
close to
the 34401A that no adjustment was warranted.
Dealers sell the 3478A for around $300; the going eBay
rate is $200 or
less.
These things are the T&M bargain of the century, IMHO.
I wish I'd gone
the
3478A route -- I could have gotten essentially the
same meter for a lot
less
money. Didn't know they were that cheap, or that
good.
-- john KE5FX
=== End copied text ===
__________________________________
Do you Yahoo!?
Yahoo! Photos: High-quality 4x6 digital prints for 25?
|
Re: 3455, 3456 & 3457 multimeters
Thanks to all for comemnts and suggestions :)
Cheers
Ian Du Rieu
|
Re: 3455, 3456 & 3457 multimeters
On Tuesday 20 April 2004 03:10 pm, pe1fbo wrote: The HP 3478 has one major drawback I think,
It cannot measure diodes ( forward voltage drop) correctly....
Fred de Vries I have a few HP3456As and have been pleased with them. The have a 1000 volt range and I think they can measure higher voltages than the HP 3478. The HP3456A's red LED display is easier for me to read than the LCD display on the smaller meters. I have some HP test gear for sale, e.g. HP 3456A, HP 3455A, HP 3325A, HP power supplies, etc., for pickup only in Illinois. They are large and I don't want to have to pack them. See: -- ========================================================================= Bob Parnass, AJ9S GNU/Linux User
|
Re: 3455, 3456 & 3457 multimeters
A friend in town (W7TOM) just bought an HP 3478A, and we were both very
favorably impressed by it. The 3478A is certainly a nice meter, but I have a hard time getting my bench lighting right so LCDs are readable without too much light falling on the scopes. Too bad it doesn't have a backlit display. My personal favorite DMM is a Solartron 7060, but it's a lot larger than a 3478A.
|
