Re: Z channel on Tempest?

Thanks. I am still pretty new at this; would you be so kind as to share how it's hooked up? I thought Z was used for intensity levels as well as blanking; ie, it was analog. Do you discard them and live with on/off?

-Douglas

On Jan 19, 2012, at 9:48 PM, Joel Rosenzweig wrote:

> I used a 7400 chip to invert the Z axis blanking signal for Tek scopes. Worked great.
>
> Joel
>
> On Jan 19, 2012, at 9:44 PM, Ken Sumrall wrote:
>
>> Can you use an op-amp in a unity gain inverter configuration? You'd need something faster than a 741, but that's not hard to find.
>>
>> ___
>> Ken
>>
>>
>> On 01/19/2012 03:10 PM, douglas@gauck.com wrote:
>>> Anybody have an inverting circuit already designed? I found chips and
>>> circuits that will output the opposite voltage (ie +5v in gives -5v out)
>>> but for Asteroids, at least, the Z out swings from +1v to +4v. How to
>>> change that to +4v to +1v? Or am I missing something?
>>>
>>> -Douglas
>>>
>>> On Oct 3, 2011, at 12:09 PM, David Shoemaker<davids@oz.net> wrote:
>>>
>>>> My Tek 2215a says 5v has appreciable cutoff. So I will need to invert.
>>> From: Joel Rosenzweig
>>>> Sent: Monday, October 03, 2011 7:35 AM
>>>> To: vectorlist@vectorlist.org
>>>> Subject: Re: VECTOR: Z channel on Tempest?
>>>> Check the polarity of the z axis blanking signal. You may need to
>>> invert it.
>>>> Sent from my iPhone
>>>> On Oct 3, 2011, at 10:07 AM, Douglas Gauck<douglas@gauck.com> wrote:
>>>>> It may be simple for David but I can't seem to get either of my scopes
>>> (Tek 475A and 2465B) to pay enough attention to the Z signal to blank the
>>> repositioning vectors. There is a barely perceptible decrease in intensity
>>> when I hook it up but they're still visible. What's the
>>> proper way to connect for blanking?
>>>>> -Douglas
>>>>> On Oct 3, 2011, at 1:06 AM, "David Shoemaker"<davids@oz.net> wrote:
>>>>>> I am benching testing a couple of tempest boards on my Scope and have
>>> lots of retrace vectors cluttering up the display.
>>>>>> When doing a BZ it is simple to hook up the z input of the scope to
>>> the intensity signal and get a pretty good picture.
>>>>>> BUT of course on tempest there are 3 intensities. Has anyone ever
>>> come up with a nice simple circuit to build a unified intensity
>>> channel for this kind of use?
>>>>>> Thanks,
>>>>>> David
>>>
>>>
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Received on Wed Jan 25 11:18:04 2012