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Thanks for the very informative reply, I did some additional testing and included some schematics of the A6A1 A6A2 module If I calibrate my sine wave generator (iPad) for an amplitude that is shown

I think what you are seeing is that in AC mode, the FM PLL is being asked to generate too large of a phase deviation which knocks the loop out of lock causing the transient error. Switching to DC

For additional motivation to go the Newscope route, consider that there is an RGB output option which allows you to send the screen output of the instrument to a VGA monitor. ?So now you can watch a

Go for it ! The old crt displays in these Analyzers are fading out fast. Bill Lauchlan Sent: Sunday, November 04, 2018 8:14 AM To: [email protected] Subject: Re:

Have been looking at this. Just need the courage!

The biggest problem with this series of scope is cathode poisoning on the CRT. First symptom is the text gets soft My recommendation is to get a replacement LCD display from Simcomm labs aka newscope

By any chance, does anyone have one lying about?

I found that when I I feed a higher amplitude 20 hz sine wave into the FM mod input with the coupling mode set to AC, I get a warning message stating that A6A1 has a transient failure F3. I turn down

Thanks for the help everyone – I ended up tracing it to what appeared to be a dry solder joint on A26K1. It was running the fan but not providing the +15V switched to the rest of the power supply.

We have a later scan of the 8116A available with an even later A3 board 08116-66535 The change section is up to change level 74 Not free, but not embarassingly expensive Manual number 08116-90014 Dave

Folks, A number of years have past with people looking for schematics for the later model 8116A.? All the manuals I have seen so far have the earlier schematics and depend on updating lots of places

Hi , alphanumeric information comes to blurs more when the brightness increases , Em sábado, 3 de novembro de 2018 18:14:10 BRT, jasm2213 via Groups.Io <jasm2213@...> escreveu: The

Exactly what Peter said! Running out of headroom at low line, high load and high regulator’s reference is a bit shameful, so in good designs one makes sure that with everything against them,

Remember that the supply must have sufficient voltage pre-regulator at the lowest line voltage and the highest load the supply was designed for. Also it must be the lowest voltage of the ripple. Peter

I'd think -20 volts and +8 volts might have been a better design. Just being conservative without thinking of what they really did. Could those voltages be a result of light loads on the bulk

The hours indication in Recall is in hours, not tenths.?? Sounds like a lot of time, but if it works as you describe, I would not be concerned. I have an 8560E with ~15000 hours and it has worked

What kind of conditions has the system been stored in? Any dampness? If so then the rail guides may have some aluminum alloy corrosion making the fit even tighter. The probable solution is to remove

Those seem ok as the unregulated supplies. Peter

Hey All, My 8902A stopped powering up and I've just started looking at the power supply.? I worked through the manual troubleshooting steps and it seems to leave the finger pointing at the regulators

Hello-- Cartoonist B. Kliban pretty well summed up the power connector diversity issue here...