ballantine 1010a oscilloscope

M

Mike

Guest
Hello,

I picked up a Ballantine 1010A this morning at a reasonable price. It
appears to be functional, but the only problem is that the horizontal sweep
trace is slanted on the screen, rising to the right. Is there a mechanical
adjustment required? Would anyone have a manual on this scope?

Thanks for the help.
Mike
 
On Sun, 4 Sep 2005 13:19:02 -0400, "Mike" <nospam@comcast.net> wrote:

Hello,

I picked up a Ballantine 1010A this morning at a reasonable price. It
appears to be functional, but the only problem is that the horizontal sweep
trace is slanted on the screen, rising to the right. Is there a mechanical
adjustment required? Would anyone have a manual on this scope?

Thanks for the help.
Mike


Do't know anything about your particular scope, but in general
Click to expand...
there should be a "trace rotation" trimpot on the front panel...
often just a little hole for you to poke a small screwdriver through.
I suppose that on less expensive scopes, you might have to manually
rotate the CRT. Use caution! You would want to have the trace
running to see when it is level, so spend some time first just
studying the layout to see how to do that safely. I'd guess there
should be some clamps you can loosen with the power off,
rotate carefully with power on, and tighten again with power off.
And do note that there may be a residual charge on power-off,
though not as bad as a TV it could still be dangerous.

Also, however you end up doing the adjustment, you will
want to do it with the scope in the same compass orientation
as you will actually be using it on your bench.

Best regards,


Bob Masta
dqatechATdaqartaDOTcom

D A Q A R T A
Data AcQuisition And Real-Time Analysis
www.daqarta.com
Home of DaqGen, the FREEWARE signal generator
 
Thanks, Bob... I'll check that out today and let you know how I made out.

Mike

"Bob Masta" <NoSpam@daqarta.com> wrote in message
news:431c3dc4.746577@news.itd.umich.edu...
On Sun, 4 Sep 2005 13:19:02 -0400, "Mike" <nospam@comcast.net> wrote:

Hello,

I picked up a Ballantine 1010A this morning at a reasonable price. It
appears to be functional, but the only problem is that the horizontal
sweep
trace is slanted on the screen, rising to the right. Is there a mechanical
adjustment required? Would anyone have a manual on this scope?

Thanks for the help.
Mike


Do't know anything about your particular scope, but in general
there should be a "trace rotation" trimpot on the front panel...
often just a little hole for you to poke a small screwdriver through.
I suppose that on less expensive scopes, you might have to manually
rotate the CRT. Use caution! You would want to have the trace
running to see when it is level, so spend some time first just
studying the layout to see how to do that safely. I'd guess there
should be some clamps you can loosen with the power off,
rotate carefully with power on, and tighten again with power off.
And do note that there may be a residual charge on power-off,
though not as bad as a TV it could still be dangerous.

Also, however you end up doing the adjustment, you will
want to do it with the scope in the same compass orientation
as you will actually be using it on your bench.

Best regards,


Bob Masta
dqatechATdaqartaDOTcom

D A Q A R T A
Data AcQuisition And Real-Time Analysis
www.daqarta.com
Home of DaqGen, the FREEWARE signal generator
Click to expand...
 
I checked the oscilloscope for a small adjustment screw on the cover. The
only thing I found was a "cal" screw that only changes the vertical
displacement of the trace. Turns out I will need to open the case.

Before I do that, how can I safely handle a CRT with power on? Just don't
touch the terminals?

Thanks.

"Bob Masta" <NoSpam@daqarta.com> wrote in message
news:431c3dc4.746577@news.itd.umich.edu...
On Sun, 4 Sep 2005 13:19:02 -0400, "Mike" <nospam@comcast.net> wrote:

Hello,

I picked up a Ballantine 1010A this morning at a reasonable price. It
appears to be functional, but the only problem is that the horizontal
sweep
trace is slanted on the screen, rising to the right. Is there a mechanical
adjustment required? Would anyone have a manual on this scope?

Thanks for the help.
Mike


Do't know anything about your particular scope, but in general
there should be a "trace rotation" trimpot on the front panel...
often just a little hole for you to poke a small screwdriver through.
I suppose that on less expensive scopes, you might have to manually
rotate the CRT. Use caution! You would want to have the trace
running to see when it is level, so spend some time first just
studying the layout to see how to do that safely. I'd guess there
should be some clamps you can loosen with the power off,
rotate carefully with power on, and tighten again with power off.
And do note that there may be a residual charge on power-off,
though not as bad as a TV it could still be dangerous.

Also, however you end up doing the adjustment, you will
want to do it with the scope in the same compass orientation
as you will actually be using it on your bench.

Best regards,


Bob Masta
dqatechATdaqartaDOTcom

D A Q A R T A
Data AcQuisition And Real-Time Analysis
www.daqarta.com
Home of DaqGen, the FREEWARE signal generator
Click to expand...
 
On Tue, 6 Sep 2005 20:04:17 -0400, "Mike" <nospam@comcast.net> wrote:

I checked the oscilloscope for a small adjustment screw on the cover. The
only thing I found was a "cal" screw that only changes the vertical
displacement of the trace. Turns out I will need to open the case.

Before I do that, how can I safely handle a CRT with power on? Just don't
touch the terminals?
Click to expand...
Without seeing this unit, I would be hesitant to make any
definite safety recommendations. I think you should be
OK if you are just touching the glass envelope, but my
inclination would be to look for a way to do this by poking
with a wooden or plastic stick.

Best regards,


Bob Masta
dqatechATdaqartaDOTcom

D A Q A R T A
Data AcQuisition And Real-Time Analysis
www.daqarta.com
Home of DaqGen, the FREEWARE signal generator
 
On Tue, 6 Sep 2005 20:04:17 -0400, "Mike" <nospam@comcast.net> wrote:

I checked the oscilloscope for a small adjustment screw on the cover. The
only thing I found was a "cal" screw that only changes the vertical
displacement of the trace. Turns out I will need to open the case.

Before I do that, how can I safely handle a CRT with power on? Just don't
touch the terminals?

Mike, I just checked out an old Heathkit construction manual to see
Click to expand...
how it was done during final calibration. They say to note the angle
of the trace, unplug the unit, rotate the trace, then plug it back in
to check. When you are happy, you unplug and tighten the clamps.

Hope this helps!


Bob Masta
dqatechATdaqartaDOTcom

D A Q A R T A
Data AcQuisition And Real-Time Analysis
www.daqarta.com
Home of DaqGen, the FREEWARE signal generator
 
Hi Bob,

Yeh, I was thinking about rotating the CRT with power off.

Thanks again for the help... greatly appreciate it.

Mike

"Bob Masta" <NoSpam@daqarta.com> wrote in message
news:43202a94.1546015@news.itd.umich.edu...
On Tue, 6 Sep 2005 20:04:17 -0400, "Mike" <nospam@comcast.net> wrote:

I checked the oscilloscope for a small adjustment screw on the cover. The
only thing I found was a "cal" screw that only changes the vertical
displacement of the trace. Turns out I will need to open the case.

Before I do that, how can I safely handle a CRT with power on? Just don't
touch the terminals?

Mike, I just checked out an old Heathkit construction manual to see
how it was done during final calibration. They say to note the angle
of the trace, unplug the unit, rotate the trace, then plug it back in
to check. When you are happy, you unplug and tighten the clamps.

Hope this helps!


Bob Masta
dqatechATdaqartaDOTcom

D A Q A R T A
Data AcQuisition And Real-Time Analysis
www.daqarta.com
Home of DaqGen, the FREEWARE signal generator
Click to expand...
 
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