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Hi all,

I've finally got a mo to look at the 466 I bought sight-unseen a while ago. I'm not really familiar with analog storage scopes, though. I've been given to understand that after switching on (which should not be done gradually with a variac) I should see an even, dimly-glowing green screen. Is that right? And what settings should I adjust to what levels for this initial switch-on? It's been a few years since it was last powered up.

thanks!

On 2018-08-18 10:49 AM, Paul B. via Groups.Io wrote:

Hi all,

I've finally got a mo to look at the 466 I bought sight-unseen a while ago. I'm not really familiar with analog storage scopes, though. I've been given to understand that after switching on (which should not be done gradually with a variac) I should see an even, dimly-glowing green screen. Is that right? And what settings should I adjust to what levels for this initial switch-on? It's been a few years since it was last powered up.

This should be covered in the service manual:

e.g.

thanks!

Thanks, but that link you provided only seems to point to an extremely high resolution scan of the front cover of the manual (69Mb's worth!) unless there's something I'm doing wrong! But no worries, I found another manual/service book quite easily elsewhere and will study that.
In the mean time, if anyone knows what the screen should appear like at switch-on (which doesn't seem to be covered in the manual i downloaded) please feel free to chip in here with a description; thanks!

On Sat, 18 Aug 2018 13:16:06 -0700, you wrote:

Thanks, but that link you provided only seems to point to an extremely high resolution scan of the front cover of the manual (69Mb's worth!) unless there's something I'm doing wrong! But no worries, I found another manual/service book quite easily elsewhere and will study that.
In the mean time, if anyone knows what the screen should appear like at switch-on (which doesn't seem to be covered in the manual i downloaded) please feel free to chip in here with a description; thanks!

I have a feeling that it depends on whether or not it is in storage
mode at startup.

With storage mode turned off, IIRC, any storage scope ought to look
"normal".

In storage mode, then you'll get a screen depending on the type of
storage (there are several) and the appropriate controls.

Harvey

A good start would be to have the controls thus:
POWER Off
INTEN Fully ccw
FOCUS Midrange
SCALE ILLUM As desired
VERT MODE Ch 1
POSITION Midrange
VOLTS/DIV 5V
VAR VOLTS/DIV Calibrated detent
AC-GND-DC DC
INVERT Normal
TRIG VIEW/BANDWIDTH Full bandwidth (No yellow showing)
STORAGE Non Store
TRIGGER (A & B):
COUPLING AC
LEVEL Midrange
SLOPE +
A TRIGGER SOURCE Norm
B (DELAYED) TRIGGER SOURCE Starts after delay
TRIG MODE Auto
A TRIG HOLDOFF Norm
SWEEP (A & B):
HORIZ DISPLAY A
A TIME/DIV 1ms
B TIME/DIV 1ms
VAR TIME/DIV Calibrated detent
DELAY TIME POSITION Full counterclockwise
X10 MAG Off (button out)
Position (Horiz) Midrange
Fine Midrange

Check that the line voltage selector and the Regulating Range Selectors are correctly set for your area.
Pull the power switch on. After about a minute, turn the INTEN control clockwise until you see a horizontal scan. If you can't see this, press the "BEAM FINDER" button and adjust the position controls to roughly centre the display, if you see one. If there's no display at all, you might have any number of faults.
If you connect a probe plugged into the Ch 1 input BNC to a signal source (the CALIBRATOR loop on the rear of the scope will do just fine), you should see a display of the waveform. You might need to increase the VOLTS/DIV setting to see the waveform initially, depending on the amplitude of the applied signal.

A lot of this is taken from the 466 Service Manual, see p 2-11, so RTFM.

E&OE.

Good Luck, Colin.

Just what I was looking for; many thanks.

On 2018-08-18 4:16 PM, Paul B. via Groups.Io wrote:

Thanks, but that link you provided only seems to point to an extremely high resolution scan of the front cover of the manual (69Mb's worth!) unless there's something I'm doing wrong!

It's a multipage TIFF -- most system previewers (Windows, OS X) can page
through it.

Sorry, I should have warned about that :-)

--Toby

But no worries, I found another manual/service book quite easily

elsewhere and will study that.

In the mean time, if anyone knows what the screen should appear like at switch-on (which doesn't seem to be covered in the manual i downloaded) please feel free to chip in here with a description; thanks!