Re: 8596E Spectrum Analyzer Fault
Response to commands is usually postponed until the end of the current sweep. If the synth is having trouble locking, or the sweep is slow due to narrowband, or perhaps crossing band edges, command
By
Dave Wright
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#150386
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Re: HP 5245L counting/gate problems
I've seen a few open circuit failures of the 1500uF 15V capacitor in at least 2 of the counters from this series and some HP analog multimeters, other than that the others have been OK, a few of the
By
factory
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#150385
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Re: HP141T solid state replacement for the neon reference.
Guys,
The 4 units of the BE19400013B have been sold. I have started building 4
more and when they are built and tested I will relist it on Ebay.
Mike Bafaro
From:
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Michael Bafaro
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#150384
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Re: HP 5245L counting/gate problems
You can use the old vintage cans and put a newer, low ESR capacitors inside to keep the vintage look.
Just make a simple pcb to solder the new cap inside and keep the old pins outside.
Jurek
By
jerzy przezdziecki <jprzezdziecki@...>
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#150383
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Re: HP 5245L counting/gate problems
OK Scott, it has never been recapped as far as I know. I’ll look into how/where the supply voltages are tested and will probably just go ahead and recap to avoid any future supply
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Tom Smith
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#150382
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Re: HP 5245L counting/gate problems
Hi Pete,
Thanks for the reply. The neon bulb is working on the start and stop test function. When placed on the start position, the bulb comes on but the counter doesn’t display any counting. All
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Tom Smith
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#150381
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Re: HP 5245L counting/gate problems
I just resurrected one.
If the power supply hasn't been re-capped, check the supply voltages first.? In my case every d*** capacitor was bad.? Check back then.
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Scott Townley
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#150380
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Re: HP 5245L counting/gate problems
Just an idea: In the case of the gate indicator (a neon bulb): try shining a bright light on it to see if that "fixes" it.
As for "not counting", I don't know an alternative other than to probe
By
saipan59 (Pete)
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#150379
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Re: HP 3403C True RMS Voltmeter display fault
There are days when Murphy's Law just seems to run in overdrive mode, but the fun will resume in a few day and I hope to have more news soon !
Joel
By
Joel Setton
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#150378
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Re: HP 3403C True RMS Voltmeter display fault
Well, It did not go well lol.
This is actually not that badly packed. It is somewhat dense but this is really well designed. The boards can be freed from their metal case easily, and A22 (AD board) is
By
AArnaud
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#150377
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HP 5245L counting/gate problems
I have several of the HP 5245L counters and until recently, had at least one working. Now it seems that the last “working” counter I own has gone belly up.
Two of them have the same problem, (the
By
Tom Smith
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#150376
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Re: 54003A success
Thank you for that detail!
Jeremy
[email protected]> wrote:
By
Jeremy Nichols
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#150375
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Re: 54003A success
Indeed, but with a 1000:1 probe that becomes a +/- 2000 volt input range which is sufficient.
That was a work requirement and their solution covers more, although this would be sufficient for them
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Peter Gottlieb
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#150374
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Re: 54003A success
Peter, didn’t you have some high-voltage requirements for your application?
Looks like the 54003A is limited to +/- 2 Volts, after whatever reduction
the probe provides. (Just curious. I missed the
By
Jeremy Nichols
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#150373
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54003A success
Thank to those who provided information I was able to successfully use 54003A input modules as 1 meg probe converter/extenders.
For my company the current COTS device was used to allow remotely using
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Peter Gottlieb
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#150372
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Re: Test Set Program Development Tool DEV_PL on 3.5" floppy
Not quite.? A USB solution was addressed earlier which is the defacto standard nowadays for communicating with old floppy deives under a modern OS.
By
Matt Harris
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#150371
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Re: Stuck APC-7 connector
Thanks, guys.
Yes, what I really need to do above all is avoid over-torquing/over-stressing the connector at the point where it goes into the bulkhead. If I can get them apart without doing that, I
By
Jinxie
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#150370
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Re: Keysight U1242B Schematic
Hi Ozan. Thank you for that tip. Unfortunately the jack tests open. But the resistance on the jack contacts on the board reads 6.02 Mohm. So the fault is somewhere on the board.
I have found other
By
Mark Creighton
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#150369
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Re: Service manual scan post processing
Which Minolta do you have?
I am in the process of trying to get a 2400DSV-E to talk to a PC myself
By
Peter Brown
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#150368
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Re: Stuck APC-7 connector
Can you determine which end has the threads out - the N adapter or the port?
Then using a padded jaw pliers and the hex wrench, turn the nut that doesn’t have the threads exposed. I would guess the
By
Don Bitters
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#150367
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