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Hi all, I've had this minty 3324A for a pretty long time now, and I just stopped trying to use it at some point due to frustrations with setting up sweeps on it. Hopeful some good people here would

regarding grounds: you're dealing with what's called circulating currents, or ground currents. Let's say that you have an analog circuit, and that its ground is common (on the board) with a high

Re: voltage jumping around - not necessarily, the sweep actually stats and stobs between bands. Doing the manual scan is probably a good idea - sorry about the confusion on the

Gonna have to leave it for now as it's once again getting really late here now. Thanks for all the help, guys, I'll be back tomorrow....

@Bruce I believe it was Ozan who posted the image showing an LED in the stack unlit - certainly not me anyway. I don't think we can attribute this to scanning/sweeping as that would be predictable and

Hi Lothar Artek media had the 8714B schematic incl. display. The Graticule generation are probably identical and as the VGA graticule is OK then it might be possible to debug the problem when manuals

----- If 500kHz reference is not stable other input (feedback port) of the phase detector will not be stable either. No need to debug the feedback divider, 500kHz reference should be checked first. As

Thanks for clarifying - anything that limits chaos is appreciated. I remember a picture showing three LEDs of which one ws off and two were on. What board had the LED off ? The PLL voltages may be

A bit of clarification is certainly in order at this point, especially given there may be people new to the thread who haven't read it all through. So.... the LED loop lock indicators for PLL1 and

Hi, I have an HP 5334A frequency counter and I want to install a 10MHz oven quartz oscillator to improve the accuracy. Although it’s not hard to find the oscillator, getting the support PCB is

Hi John Great thank you very much. I have found these in the schematic and also the video signal pin16. The Graticule signal is probably also missing in the video signal as processed in the video

Correct, mostly if using the internal 10MHz reference. When connected to an external 10 MHz reference, the ref unlock is much less common - and if it does show up, it suggests that the 100MHz ref

Hi Lothar Thank you very much for the hints Kind regards Kurt Fra: [email protected] <[email protected]> P? vegne af Lothar baier Sendt: 8. marts

Most 8566/68s show the Oven and REF Unlock initially connected to power.

I thought he said that one of the 20/30 synthesizer LEDs was off - Probably best to look at that B4 the YTO. Also, the other plls fail only if the 100 MHz is drastically non functional. Try

Jinxie said that the Oven and REF unlock disappear after 6-7 minutes, so it's just an oven warmup issue. This is completely normal behavior; the reference is fine. Also, I would expect all lock error

OK - Good information. The fact that you see the REF UNLOCK suggests that the 10MHz freq ref may need adjustment. This will mask any mis adjustment of the 100 MH REF OSC. This suggests that ref

Kurt, I added a couple of files with schematic and layout for the 8711C CRT display.? They may be helpful.? There are contrast and brightness adjustments on the display board in addition to the

Kurt, I added a couple of files with schematic and layout for the 8711C CRT display.? They may be helpful.? There are contrast and brightness adjustments on the display board in addition to the

As far as schematics on those beasts goes you have to look for CLIP not schematics , agilent called those Component Level Information Packets , there is none specifically covering the ES but it is