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Yves, Thank you ! Here is what I measure ?for the PLL2 frequency on my unit. I was in SPAN zero mode, sweep time 10s 10 KHz : 731 KHz 100 Khz : 821 KHz 1 MHz: 1720 KHz 2MHz: 2720 KHz I am off for

Hi, This means that one of the PLLs does not have the right frequency. The frequency near 22.5kHz will not pass through the filters which are for 4kHz at the DIGITAL IF. You should check the

Don't believe everything you read. There's a vast amount of misunderstanding and bad information about JPEG floating around; it has been that way for a very long time. This is a result of people

Can you advise me on what next board should I check ? Perhaps A12 reference board or A14 Fractional N board ? Thank you.

I have a paper copy of the HP-466A manual, serial prefix 226, and could copy the schematic for you. Jeremy N6WFO [email protected]> wrote:

I have acquired a HP8569B. It had a problem with the CRT X drive, after many hours it's now fixed. However the neg 40V psu then kept blowing its 40v fuse, ?the 2N6056 is was found to be ded on

It's all OK now, I took it apart and fixed it :) :) :) On the DSP/ADC module A3 the 5V rail is now 4.97V (was 4.70V typical) and the 3V3 rail is now 3.24V (was 2.97V and very drifty). I disassembled

Just took a whack at it myself. It went better than my "08340-90021 Vol 4 Process Attempt" I think. Peter and Dave, both of your processed files appear good to me. That final schematic (page 26

Hello Yves, Thank you for your screenshoot. Here is what I got on my board. TP20 B (with look cable between port 1 and port 2): TP18 A (OPEN loop between port 1 and port 2): TP16 R: I check the

Liam / Bill / William: Rather than browse mailing lists please send me my manual which I haven't received for a very long time now. <sales@...> wrote:

Don't know where I read this, but it said: better use high resolution with JPEG compression than low resolution without. For the same file size, that is. My experience: 300dpi is largely sufficient

Sorry, test point TP12, TP10 and TP11 are ground from sampler…no signal on that. Input signals are on TP16, Tp18 and TP20. Output R, A and B are -6dB lower than input (TP 9,8 and 7). Signal at

If anyone has a copy of the manual for this old amplifier I'd appreciate a copy.? Even just the schematic diagram would be appreciated.? I have had this amplifier for years and use it once in a

I should have said: [...] scan 600dpi, ==greyscale== .tiff-s !!ONLY!!

I don't want to have to dig for that so give me a link, I'll post process and get back to you. I have long since and flat out mastered document scanning and restoration, I've done 1,000s upon

You might find bits of this useful: https://en.wikipedia.org/wiki/List_of_battery_sizes Scroll down to where they discuss coin and button cells: "IEC designation numbers indicate the physical

No, the "tabs" are not re-usable. They're a part of the battery. I've replaced these in a variety of equipment, unsoldering them and then installing a socket and new battery as you describe. The

If the three signals are absent, there would have to be a common point between them, so there is the local power supply. Signal A, B and R on DIGITAL IF come from of the 3 outputs of samplers

Using JPEG for those will result in nasty artifacting around the text, border box, etc. I'd not recommend that at all. -Dave -- Dave McGuire, AK4HZ New Kensington, PA

Yves, Thank you for your analyse. I have exactly the same board as you for A10. The ADC test pass with no problem. I was not able to get any signal with the scope on TP R, A or B. Quite strange!