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Re: HP 9122C & 9122D floppy drive units - adapt to use a contemporary (3.5" 1.4MB) diskette drive?
Further to my previous comments the two drive I modified to work on a 9122C are a Panasonic JU-257A606P and a YE Data YD-702D-6037D.? One thing you may encounter there are later versions of both of
By Paul Berger · #92323 ·
Re: HP 9122C & 9122D floppy drive units - adapt to use a contemporary (3.5" 1.4MB) diskette drive?
I have the combo floppy and hard drive. Worked fine with my 8753D last I checked. It is heavy though where are you located? send reply directly if you can mycall@... 73 Eugene W2HX
By W2HX · #92322 ·
Re: HP 9122C & 9122D floppy drive units - adapt to use a contemporary (3.5" 1.4MB) diskette drive?
With a little work certain 1.44 drives can be made to work in a 9122C the usual stumbling block is the controller in the 9122 wants to see the ready signal, but I did manage to make a couple drives
By Paul Berger · #92321 ·
HP 9122C & 9122D floppy drive units - adapt to use a contemporary (3.5" 1.4MB) diskette drive?
I ended up with both HP 9122C and 9122D (dual floppy drive) units. Both are recognized by my 8753 network analyzer (up to the point that setting incorrect GPIB address and setting incorrect
By David Feldman · #92320 ·
Re: Peak vs. Average Power Sensors
That’s correct as far as amplitude modulations go, and also the sampling close to the Nyquist limit only works when it’s synchronous with the input signal: the Nyquist limit isn’t some general
By Kuba Ober · #92319 ·
Peak vs. Average Power Sensors
I'm trying to educate myself about the newer USB power sensors. When I look for example at the U2043XA (average) and U2044XA (peak and average) specs, I see that both can do at least 20K
By John Ackermann N8UR · #92318 ·
Re: Transistors for the A17 voltage regulator 8642B
Yes its connected to A5, I notice the very moment I push the power button some of the LED indicators on the regulator blip on. Also I have a working 8642B with a regulator I can take out and put into
By DW · #92317 ·
Re: 5370B problem. -5 V rail not working, and 7 A fuse in -10 V unregulated supply blown.
That was John K Seamon. It is very nice. I have two of them, but sadly, he’s out of them and doesn’t plan to offer them again.
By Glen Hoag · #92316 ·
Re: 5370B problem. -5 V rail not working, and 7 A fuse in -10 V unregulated supply blown.
And a time nut did a beagle bone based replacement for the 6809 board that is quite nice.
By bownes · #92315 ·
Re: 5370B problem. -5 V rail not working, and 7 A fuse in -10 V unregulated supply blown.
I have both a 5370A (upgraded by HP to 5370B) and a 5370B at home. I can check, but don’t recall a separate RAM board. Early 5370s used a Fairchild F8 family CPU. When the F8 reached end of life, HP
By Glen Hoag · #92314 ·
Re: 5370B problem. -5 V rail not working, and 7 A fuse in -10 V unregulated supply blown.
There's nothing about A13 in the 5370A manual I have. <drkirkby@...> wrote:
By Orin Eman · #92313 ·
Re: HP8405A - Uncommon component failure?
Silver mica caps suffer from silver migration. They develop leakage, until they short out. They cause a lot of noise problems in older radios, in IF transformers as they arc along the tips of the
By Michael A. Terrell · #92312 ·
Re: 5370B problem. -5 V rail not working, and 7 A fuse in -10 V unregulated supply blown.
Cheers. Do you know anything about the memory expansion board? Is that another left-over from the older A version? Dave Dr David Kirkby Ph.D C.Eng MIET Kirkby Microwave Ltd Registered office: Stokes
By Dr. David Kirkby from Kirkby Microwave Ltd <drkirkby@...> · #92311 ·
Re: 5370B problem. -5 V rail not working, and 7 A fuse in -10 V unregulated supply blown.
Only the earlier 5370As used that ROM slot. The ROM is on the CPU board in later 'A's and 'B's. drkirkby@...> wrote:
By Orin Eman · #92310 ·
5370B problem. -5 V rail not working, and 7 A fuse in -10 V unregulated supply blown.
I have a 5370B which I bought from eBay with supposedly error 02, which is an overflow and user error. However, on opening it up I can see the problem is more than that, because one of the 7 A fuses
By Dr. David Kirkby from Kirkby Microwave Ltd <drkirkby@...> · #92309 ·
Re: HP85050A open standard 1250-1873 wanted
But I did test the same DUT by HP8753E and Advantest R3765BH or R3767C . They have the same results.R3765/7 are using Maury Cal. Kit. 從我的 iPhone 傳送
By Yiu On Tony C · #92308 ·
Re: HP85050A open standard 1250-1873 wanted
Please [email protected]> wrote: You might want to consider asking on /g/Test-Equipment-For-Sale-Wanted-or-Exchange/ The 8753 uses the 85031 (from memory) which is a fairly simple
By Dr. David Kirkby from Kirkby Microwave Ltd <drkirkby@...> · #92307 ·
Re: HP8405A - Uncommon component failure?
Ive seen those components fail before but usually with those failure tends to be mechanical rather than electrical. Thermal cycling, mounting stress, defect in bonding leads etc. as they usually fail
By Scott McGrath · #92306 ·
Re: Quoting Prior Messages (Re: [HP-Agilent-Keysight-equipment] Transistors for the A17 voltage regulator 8642B)
As to usenet i remember bang paths and telebit trailblazer modems I.e. csiro!bigsite!foovax!barbox!me As for google they get all my e-commerce mail as they do a reasonable job of keeping it spam free
By Scott McGrath · #92305 ·
HP85050A open standard 1250-1873 wanted
Hi members : Anyone still using HP85050A with 1250-1873? open standard ?? Any photos or extra can offer ?? In my 8510A have the cal. standard file A1. when cal. with 85050B can see the actually
By Yiu On Tony C · #92304 ·