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Date
data aquisition switch
was there a predecessor to the 34970A? if so what is the model number please so that I can do some research. TIA Regards Paul -- 73 de Paul GW8IZR IO73TI http://www.gw8izr.com
By Paul_group <paul_group@...> · #5428 ·
Re: Looking for an 8640B manual
I just noticed that Manuals Plus is running a 50% off sale on their original hardcopy manuals (not reprints). That makes some of their more-expensive manuals and sets a lot more affordable. -- john,
By John Miles <jmiles@...> · #5427 ·
Re: Looking for an 8640B manual
<w4cx@...> wrote: www.agilent.com, search on 8640B. Service manual and operating manuals are available as pdf.
By david9905 · #5426 ·
HP system and data diskettes; be warned!
During the last months, here, on this mailing-list as on other HP equipment related forums I could read of some guys suggesting to use DSHD (Double Side High Density, 1440KBytes) type floppy diskettes
By Andreas Troschka <yahoolists@...> · #5425 ·
Re: HP PCB's in England - free to a good home
Hi Robert If they are still looking for a home, email me a list to: starmux64@... Regards, Steve
By Steve A · #5424 ·
Re: was HP 5342A board, now IC sockets vs soldering
A little off topic: In the 1980's, I worked at a company that had a policy of putting all IC's in high quality sockets. This came in handy because some of the techs didn't really know how to
By Matt Corbett · #5423 ·
Re: was HP 5342A board, now IC sockets vs soldering
Yes, its a tough call either way. FWIW, when I worked at Tektronix some 25 years ago they had an internal design interconnect handbook that recommended against IC sockets if at all possible. Their
By DON CRAMER <donlcramer@...> · #5422 ·
Re: HP 5342A processor board
I would replace a supect socket with a good quality one rather than solder the IC in. If the IC is bad, it just means more work and possible damage to remove it again. -Dave
By d.seiter@... · #5421 ·
Re: HP 5342A processor board
Good point, I guess with 20 years old gear, you are not worried about having to upgrade the software :-) I am seriously thinking of doing that with my HP 5370A if the problem comes back. Alternately,
By Didier Juges <didier@...> · #5420 ·
Re: HP 5342A processor board
Jim, There is a possibility that one of the ROMs might be bad. You may be able to get the code from Blue Feather Tech and burn new ROMs. If the CPU is getting it's clock and the reset is good, you
By Didier Juges <didier@...> · #5419 ·
Re: HP 5342A processor board
Many years ago with microcomputers which came with low quality sockets, I had an assembler remove the sockets and solder the ICs in directly. That eliminated intermittent crashes in some 24/7
By DON CRAMER <donlcramer@...> · #5418 ·
Re: HP 5342A processor board
--- Didier Juges <didier@...> wrote: Hi Didier, Thank you for the suggestion! I had already tried removing/reinserting the CPU which is the only socketed chip. I had even painted its legs with
By Jim Miller <jcmco@...> · #5417 ·
Re: HP 5342A processor board
Jim, Have you tried the obvious of pulling and re-inserting the CPU and ROMs (and any other chip on socket)? My 5370A has needed that treatment at least 3 times, in spite of Deoxit ProGold. Each time
By Didier Juges <didier@...> · #5416 ·
HP 5342A processor board
Hi, I am repairing a 5342A counter that has a bad A14 processor card. I have traced the problem to the CPU board by trading cards with a known good unit. Are there any common failure modes with this
By Jim <jcmco@...> · #5415 ·
11867A RF Limiter
Looking for this or other similar limiter to protect my 8555A first mixer from damage. Cheers, and thanks!...........................Don Collie jnr. P.S. : my email is : donmer@...
By Don Collie <donmer@...> · #5414 ·
Re: HP8568B Display Intensity?
That's a good point... or an HP 1332A display might work as well, considering that's where the 85662A's CRT was originally employed. You can also use SSM (http://www.ke5fx.com/gpib/ssm.htm) with any
By gleamfollower <jmiles@...> · #5413 ·
Re: HP8568B Display Intensity?
The display on my 8568B has been weak since I purchased it. I usually use an external Tektronix X, Y, Z display. Because the 8568B generates it's own graticule, the display is accurate. This may not
By k6yaz@... · #5412 ·
Re: BAMA scaling back
That is not as a result of storage limitations, it is due to the site owner changing jobs and losing access to a super-fast internet connection. So he can't tear submissions off, reformat them and
By Craig Sawyers · #5411 ·
BAMA scaling back
Fellow techies in all groups (that I subscribe to), I just found the following on Usenet from BAMA's owner. It seems that storage is becoming a problem for him. I'm posting this to all four groups I
By Bruce Lane · #5410 ·
Re: HP8568B Display Intensity?
You can play with the INT LIMIT control on the Z-axis board, but it will probably not help much. That is a classic weak-CRT symptom. Does it look like the first photo at http://www.ke5fx.com/crt.html
By John Miles <jmiles@...> · #5409 ·