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Re: 8350B w/83590A repair advice
It is the same exact pack as the HP35/45/55/65/67 used. The pack is really, really unnecessary. Its purpose is to prevent you from having to reset the front panel every time you turn on the generator.
By Chuck Harris · #101334 ·
Re: Help to repair my HP654A Test Oscillator
Almost certainly 50Hz AM modulation - 20msec per cycle. Does touching the 645 chassis change the amplitude of the modulation, if so check the chassis ground at the power cord input, you may have an
By Don Bitters · #101333 ·
Re: 8350B w/83590A repair advice
Mark: Hi...Shift 92 and Shift 93 allow the RPG on the plug in to tune through some of the constants in the output tuning. See if you can find a number on the display that solves the output issues. be
By Daniel Nelson · #101332 ·
Re: 8350B w/83590A repair advice
On Sun, 15 Dec 2019, Paul Bicknell wrote: Eh... As I said I have a fully working/refurbished/calibrated 83570A but that is a single-band 18-26.5 GHz plug-in, not a wide range one. As a matter of fact
By Sergey Kubushyn · #101331 ·
Re: 8350B w/83590A repair advice
meant "scan + post" ug
By Mark Bielman · #101330 ·
Re: 8350B w/83590A repair advice
On Sun, 15 Dec 2019, Paul Bicknell wrote: Put it on my web site at: http://www.ksilabs.com/pub/Wiltron-66xxb_Maintenance_Manual.pdf Not of stellar quality but pretty decent, with schematics, drawings,
By Sergey Kubushyn · #101329 ·
Re: 8350B w/83590A repair advice
Hi Paul. I wish the scanned copy of this manual was better. If I get a "real" one, I will sac and post. mark
By Mark Bielman · #101328 ·
Re: 8350B w/83590A repair advice
Hi Mark You have to understand the history behind manuals and the gentleman's agreement we have with HP A lot of the manuals on this HP site have been supplied by members of this group / before Groups
By Paul Bicknell · #101327 ·
Re: 8350B w/83590A repair advice
Hello Serge, Good but somewhat discouraging info. Agree that the mainframe is straight forward and of no concern. But those plug-ins look problematic. I have a service manual for the 83592 (in OK pdf)
By Mark Bielman · #101326 ·
Re: 8350B w/83590A repair advice
Hi looking for a working 26.5 Ghz plug in for a 8350 Regards Paul
By Paul Bicknell · #101325 ·
Re: 8350B w/83590A repair advice
Hi do you have the service manual for the Wiltron 6669B As I have a 6669A Paul
By Paul Bicknell · #101324 ·
Re: 8350B w/83590A repair advice
It is almost certainly the plug-in. 8350B itself is a simple device having almost no influence on plug-in performance. Those 8350B plug-ins are very tricky to adjust and calibrate. Their output is a
By Sergey Kubushyn · #101323 ·
Re: 8350B w/83590A repair advice
No other plug-in right now. Not afraid of diving in. Work on HP stuff all the time. These plug-ins look like a challenge in the way they are packed full. Just noticed that the frequency is moving
By Mark Bielman · #101322 ·
Re: 8350B w/83590A repair advice
Check which unit has the problems. Best done with a plug-in you can trust. Don't tinker until you know which is the bad unit.
By peter bunge · #101321 ·
Re: Help to repair my HP654A Test Oscillator
Hi, over the weekend I spent some time to calibrate my 654A oscillator, as I was suggested to. Beginning from pag. 5-12 of OP&Service manual, I did 1. POWER SUPPLY VOLTAGE ADJUSTMENTS -> OK 2. POWER
By Marco Marchesi · #101320 ·
Re: 2401C Integrating Digital Voltmeter and 2410B AC - Ohms Converter
Hi Terry - Yes, I believe that we did get the 'twin' 3460Bs that were listed a few years ago. I guess whichever of us gets the time to do the boards will then have to share with the other. I'll be
By Cubdriver · #101319 ·
Re: 8350B w/83590A repair advice
Unit just arrived. Initial testing does not agree with original complaint: "Output at 2Ghz is -10db below what it should be. Won't produce a signal much past 10Ghz and at 10Ghz it is -30db below the
By Mark Bielman · #101318 ·
Re: 2401C Integrating Digital Voltmeter and 2410B AC - Ohms Converter
Yeah, that's a rare one apparently - have had it in my evilbay watch list for years now with no hits other than an occasional manual for it. -Pat
By Cubdriver · #101317 ·
Re: 8350B w/83590A repair advice
True my manual and equipment are 83592c, but that leaves still the YTM as a cause
By @rien_pa0jme · #101316 ·
Re: Does anyone have any PIC17C42A-16I/L to spare (ideally in UK)
Hi David, Avnet (AKA Farnell these days?) claim to be able to get the PIC17C42A-25I/L (44 pin, -40 +85, 25 MHz part) in 4 weeks with an MOQ of 1 at ~11 Euro but other than that - as I guess you found
By Adrian Nicol · #101315 ·