Re: BASIC on the HP 3396B Integrator II ?
O.K., the missing ROM was found by a fellow HP fan and a copy has been installed in my device.
I now see that the core model has a BASIC interpreter built-in, but not the interactive BASIC system which is needed to write programs.
This part is contained in the formerly missing ROM.
What is still missing is the "HP 3396 RS-232-C Programmer's Guide (03396-90335)", which seems to contain the syntax for remote operation as used by the HP PEAK96 software.
Anyway, with the added BASIC Capability it is possible for me to access other HP-IL devices.
Another entertaining building block of the HP-IL universe.
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Re: I'm old 70+, the 70K system is old; good or bad omen?
Right-Oh
DC > AC > DC
I'm kind of like my dog...
Sniff > Visual > Locate... bury the bone
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-----Original Message----- From: [email protected] < [email protected]> On Behalf Of Dave McGuire Sent: Monday, November 22, 2021 6:42 PM To: [email protected]Subject: Re: [HP-Agilent-Keysight-equipment] I'm old 70+, the 70K system is old; good or bad omen? On 11/22/21 9:26 PM, Gene Silvernail wrote: Dave that's spot on my next move.
I need to get a schematic to work from rather than going in blind. I
have a ESR meter that can read with some considerations ESR, etc
in-circuit. I will make readings of all the caps before and after
removal along with the replacement caps. Because I had to re-fuse one
of the 2 fuses, I believe more than just caps, may be IC regulator or
other actives are involved.
While awaiting proper fuses (very fast acting) I improvised, to
continue trouble shooting, using the wire element from a standard 2
amp (fast
acting) fuse, see below. This may have provoked some additional
damage, will see. "Human senses first"...take a look at where the leads exit those capacitors, look for some light charring or darkening around the leads. Target those first. Yes, something caused that fuse to blow. I've not looked (recently, anyway) at the schematic for that power supply, but it's not uncommon for failed smoothing capacitors to cause ripple that exceeds the trigger voltage of a downstream crowbar circuit, resulting in blown fuses. Also, remember that this is a 40kHz circuit, no 60/120Hz business here. Good luck. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
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Re: : HP Spectrumanalyzer 851b and 852a
Hi Michael,
did you check the addendums / change notes section of your manual already? These instruments obviously underwent a lot of changes in the beginning. For the 851A alone, I have a 1/2" stack of Service Notes, Production Memos and Change Notes alone.
Chris
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Re: I'm old 70+, the 70K system is old; good or bad omen?
On 11/22/21 9:26 PM, Gene Silvernail wrote: Dave that's spot on my next move.
I need to get a schematic to work from rather than going in blind. I have a ESR meter that can read with some considerations ESR, etc in-circuit. ?I will make readings of all the caps before and after removal along with the replacement caps. Because I had to re-fuse one of the 2 fuses, I believe more than just caps, may be IC regulator or other actives are involved.
While awaiting proper fuses (very fast acting) I improvised, to continue trouble shooting, ?using the wire element from a standard 2 amp (fast acting) fuse, see below. This may have provoked some additional damage, will see. "Human senses first"...take a look at where the leads exit those capacitors, look for some light charring or darkening around the leads. Target those first. Yes, something caused that fuse to blow. I've not looked (recently, anyway) at the schematic for that power supply, but it's not uncommon for failed smoothing capacitors to cause ripple that exceeds the trigger voltage of a downstream crowbar circuit, resulting in blown fuses. Also, remember that this is a 40kHz circuit, no 60/120Hz business here. Good luck. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
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Re: I'm old 70+, the 70K system is old; good or bad omen?
Dave that's spot on my next move. ? I need to get a schematic to work from rather than going in blind. I have a ESR meter that can read with some considerations ESR, etc in-circuit. ?I will make readings of all the caps before and after removal along with the replacement caps. Because I had to re-fuse one of the 2 fuses, I believe more than just caps, may be IC regulator or other actives are involved. ? While awaiting proper fuses (very fast acting) I improvised, to continue trouble shooting, ?using the wire element from a standard 2 amp (fast acting) fuse, see below. This may have provoked some additional damage, will see. 
? ? Will post as we go down this road
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-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Dave McGuire
Sent: Sunday, November 21, 2021 10:36 AM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] I'm old 70+, the 70K system is old; good or bad omen? ? ? ?? Definitely look at the column of electrolytic capacitors in the middle of the power supply board.? It seems most 70900s have succumbed to failures of those capacitors now.? There have been YIG failures, but in my experience nearly all of those capacitors will be bad. ? ?? They do need to be low-ESR types, but they're not difficult to find. I'll bet that, once replaced, your 70900 will spring to life. ? ????????????? -Dave ? On 11/20/21 9:02 PM, Gene Silvernail wrote: > Thanks Vladan, > > That¡¯s a good postulate because I had to replace one of the fuses on > the PS board to get this far in trouble shooting. BTW those fuses are > rare and damned expensive. They are from the early NASA days and > listed as very fast acting fuses. Got a few on order but not wanting > p-off $10 dollar fuses in trouble shooting I improvised by breaking > open standard fast 2A fuses reclaiming the fuse wire. I pinned the > wire in the 2 pins of the socket using the blown fuse. I extended the > wire free of the socket by 3mm to free it from any thermal sink. ?If I > was going to blow fuses they would be cheap fuses. Before refusing I > could not get all the keys on the 702005A to respond, i.e. row column > selection on A-Map. Also none of the front status LEDs on the L.O. > were illuminated. Best guess was with that fuse out, inboard fuse, > some mutual bus was being inhibited. Refusing cleared 70205A > functionality and LEDs were lit, albeit maybe dimmer than the RF > section. Of note, now the IF LEDs were out where prior to fuse replacement at least one, I think both, were lit. > > I think next step is to pull the PS board and¡ > >? 1. Visual on full board top and bottom? 2. Run C and ESR readings on > the electrolytics? 3. Verify what the bad fuse fused then verify all > actives in that path > > I still don¡¯t know if the 70905A/L.O. should be seen in the Address > Map > > *From:* [email protected] > <[email protected]> *On Behalf Of *pianovt via > groups.io > *Sent:* Saturday, November 20, 2021 5:36 PM > *To:* [email protected] > *Subject:* Re: [HP-Agilent-Keysight-equipment] I'm old 70+, the 70K > system is old; good or bad omen? > > Gene, > > I don't know the answers to your configuration question, but one > possibility is that a power supply in the LO module is down. After > years of service, the electrolytic capacitors in that module tend to > fail. You may be able to see what's going on by removing the mainframe > cover and the LO module cover. > > Vladan > > ? ? -- Dave McGuire, AK4HZ New Kensington, PA ? ? ? ?
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Re: Looking for a 16534a or 16533a oscilloscope card
Nada on a 33A or 34A from me.
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Re: Maybe someone can use parts for a HP3577A?
On Mon, Nov 22, 2021 at 10:00 PM, Wilko Bulte wrote:
Just stumbled on this advert. Mind you, I am not the seller nor do I know him. Prices are in € and the parts are in the Netherlands.
Hi Wilko, I purchased the keyboard (therefore no longer in the ad), which contains 51 Bill West switches. It proved in very good condition and it was packed with great care. I hope others will be happy with the other boards. Also, a disclaimer from my side: No affiliation whatsoever. Raymond
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Maybe someone can use parts for a HP3577A?
Just stumbled on this advert. Mind you, I am not the seller nor do I know him. Prices are in € and the parts are in the Netherlands.
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Re: 5065A rubidium frequency standard, no 2nd harmonic.
Jared You can pull it from the front or back. They come from the same circuit. Your simply looking to see if teh 5 MHz is off in open loop mode. If its more then 1 Hz I will believe thats trouble. You could also inject the good 5 MHz into what the OCXO feeds and if you have some 2H then you know your on the right trail. Regards Paul
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Re: I'm old 70+, the 70K system is old; good or bad omen?
Got that Dave... makes sense and availability is probably nil... will replace? with 2 leg varieties...TNX
Gene/K7QHO
Sent from my T-Mobile 5G Device
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?? I don't recall whether the third lead is isolated or not, but I
replace them with two-leaded capacitors.? As far as I can tell, that was
just HP being overly anal-retentive about immobilization of the components.
????????????? -Dave
On 11/22/21 2:09 PM, Gene Silvernail wrote:
> Thanks Dave,
>
> What's the story on the dual caps?
>
> Regards
>
> Gene
>
>
> Sent from my T-Mobile 5G Device
> Get Outlook for Android <>
> ------------------------------------------------------------------------
> *From:* [email protected]
> < [email protected]> on behalf of Dave McGuire
> <mcguire@...>
> *Sent:* Monday, November 22, 2021 8:40:02 AM
> *To:* [email protected]
> < [email protected]>
> *Subject:* Re: [HP-Agilent-Keysight-equipment] I'm old 70+, the 70K
> system is old; good or bad omen?
> On 11/21/21 10:56 PM, Gene Silvernail wrote:
>> The as-found is shown on the right¡so I tried the settings in Figure 2.4
>>? ?as shown below¡ still no cigar¡70900A still MIA ON Map?
>
>? ?? Gene, seriously, check those capacitors on the power supply board.
> This is not just an occasional problem; seriously, 3/4ths of the 70900s
> that have gone through here have had that failure.
>
>? ?????????? -Dave
>
> --
> Dave McGuire, AK4HZ
> New Kensington, PA
>
>
>
>
>
>
--
Dave McGuire, AK4HZ
New Kensington, PA
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Re: I'm old 70+, the 70K system is old; good or bad omen?
I don't recall whether the third lead is isolated or not, but I replace them with two-leaded capacitors. As far as I can tell, that was just HP being overly anal-retentive about immobilization of the components.
-Dave
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On 11/22/21 2:09 PM, Gene Silvernail wrote: Thanks Dave,
What's the story on the dual caps?
Regards
Gene
Sent from my T-Mobile 5G Device
Get Outlook for Android <>
------------------------------------------------------------------------
*From:* [email protected] <[email protected]> on behalf of Dave McGuire <mcguire@...>
*Sent:* Monday, November 22, 2021 8:40:02 AM
*To:* [email protected] <[email protected]>
*Subject:* Re: [HP-Agilent-Keysight-equipment] I'm old 70+, the 70K system is old; good or bad omen?
On 11/21/21 10:56 PM, Gene Silvernail wrote:
The as-found is shown on the right¡so I tried the settings in Figure 2.4 ? ?as shown below¡ still no cigar¡70900A still MIA ON Map? ?? Gene, seriously, check those capacitors on the power supply board.
This is not just an occasional problem; seriously, 3/4ths of the 70900s
that have gone through here have had that failure.
?????????? -Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
--
Dave McGuire, AK4HZ
New Kensington, PA
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Re: I'm old 70+, the 70K system is old; good or bad omen?
Thanks Dave,
What's the story on the dual caps?
Regards
Gene
Sent from my T-Mobile 5G Device
Get
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On 11/21/21 10:56 PM, Gene Silvernail wrote:
> The as-found is shown on the right¡so I tried the settings in Figure 2.4
>? ?as shown below¡ still no cigar¡70900A still MIA ON Map?
?? Gene, seriously, check those capacitors on the power supply board.
This is not just an occasional problem; seriously, 3/4ths of the 70900s
that have gone through here have had that failure.
?????????? -Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
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Re: I'm old 70+, the 70K system is old; good or bad omen?
Here is a Mouser list I use:
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Mfr. #:
A759MU277M1VAAE022
Mouser #:
80-A759MU277M1VAAE22
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Mouser #:
710-870135375007
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| 4 |
Mfr. #:
A758KR567M1AAAE011
Mouser #:
80-A758KR567M1AAAE11
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| 5 |
Mfr. #:
A750MV128M1CAAE012
Mouser #:
80-A750MV128M1CAAE12
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On 11/21/2021 9:13 PM, pianovt via
groups.io wrote:
Just a reminder: the supply operates at 40KHz, so search for
correct ESR values in that frequency range.
Vladan
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This email has been checked for viruses by Avast antivirus software.
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Re: 5065A rubidium frequency standard, no 2nd harmonic.
Not sure of the circuit - I would pull it from a place you are sure drives the Ghz synthesizer - OXO mist likely
Quoting "Jared Cabot via groups.io" <jaredcabot@...>:
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I have the Leo Bodnar GPS standard to compare against, should I pull the 5MHz from the front or rear panel of the 5065A, or directly from the OCXO module?
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Re: 5065A rubidium frequency standard, no 2nd harmonic.
I have the Leo Bodnar GPS standard to compare against, should I pull the 5MHz from the front or rear panel of the 5065A, or directly from the OCXO module?
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Re: Looking for a 16534a or 16533a oscilloscope card
I too have a '532A that I'd like to re-home for a nominal sum, if anyone is interested.
-Dave
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On 11/22/21 1:05 PM, Bruce wrote: If you have a '34 (that he doesn't buy) I'm interested
Quoting "Precaud via groups.io" <jbau@...>:
I have a 16532A if that willl work for you. Will have to look to see if I have any 33's or 34's left.
--
Dave McGuire, AK4HZ
New Kensington, PA
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Re: Looking for a 16534a or 16533a oscilloscope card
If you have a '34 (that he doesn't buy) I'm interested
Quoting "Precaud via groups.io" <jbau@...>:
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I have a 16532A if that willl work for you. Will have to look to see if I have any 33's or 34's left.
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Re: I'm old 70+, the 70K system is old; good or bad omen?
On 11/21/21 10:56 PM, Gene Silvernail wrote: The as-found is shown on the right¡so I tried the settings in Figure 2.4 ?as shown below¡ still no cigar¡70900A still MIA ON Map? Gene, seriously, check those capacitors on the power supply board. This is not just an occasional problem; seriously, 3/4ths of the 70900s that have gone through here have had that failure. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
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Re: Looking for a 16534a or 16533a oscilloscope card
I have a 16532A if that willl work for you. Will have to look to see if I have any 33's or 34's left.
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Re: 8341A *restoration adventure*
Yes, I'll do that, thanks Bruce
I just order the band 0 amplifier, a working and tested unit from eBay located in NJ. When it arrives, I'll redo several test and see the behavoir of the unit before next movement or deal. I think the improvement will be juicy, because the low band signal is important to the SYTM to multiply and mix the final signal, if I understand the theory of operation.
Meanwhile I need to check the entry display connection, because the right vertical lines of all digits are off (maybe you saw this in the photos). Idk if it's a connection problem as it happened in my 8663A. Also I need to check why the main line voltage selector doesn't allow work with 230 VAC... maybe the contacts are dirty, I placed the cam properly and change the fuse and nothing works (not even the standby mode).?And the third task is straighten the lower front panel, bent because of crash during overseas travel. I will post photos of those side-tasks.
Best regards,
R.
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Dave McGuire
Precaud
Jared Cabot
RubenRubio