Re: Using an oscope as a monitor

Without using the Z input (if your scope even has one) you will have an
EXTREMELY bright dot in the center of the screen. That will be normal and
scope screens can handle it (will toast a monitor screen though, don't do
that on a monitor).

On Sun, Oct 20, 2013 at 7:15 PM, Joel Griffin Dodd <griffindodd@gmail.com>wrote:

> Thanks guys. Maybe I do have the brightness too low.
>
> Bill thanks for shipping out the AVG CPU looking forward to receiving it.
> On Oct 20, 2013 4:56 PM, "William Boucher" <wboucher6@cogeco.ca> wrote:
>
>> With scopes disconnected, if you are not seeing the 'dot' in the
>> center of the screen until you press 'beam find', it means that you have to
>> adjust the position dials to bring dot onto the screen. Once you have the
>> dot centered, then connect the probes to the game X & Y. Be aware that the
>> image could appear on the screen as rotated (X & Y swapped) or with X
>> and/or Y inverted. Vector games tend to bring the beam back to the center
>> of the screen quite often so regardless of the sensitivity (volts/div), you
>> should seen lines sprouting out from center. Also be aware that you will
>> see all of the retrace lines because you have no way to connect the Z
>> channel.
>>
>> William Boucher
>> http://www.biltronix.com
>>
>>
>> On 10/20/2013 7:22 PM, Joel Griffin Dodd wrote:
>>
>> Yep nothing I do seems to show the image without holding down find beam.
>> And qhen the image does show its not the image on a regular monitor
>> On Oct 20, 2013 1:00 PM, "Rodger Boots" <rlboots2@gmail.com> wrote:
>>
>>> Try putting trigger on LINE. Not really ideal, but scope may be
>>> blanking and this would give it something to trigger on to force it to
>>> unblank.
>>> On Oct 20, 2013 2:18 PM, "Joel Griffin Dodd" <griffindodd@gmail.com>
>>> wrote:
>>>
>>>> Thanks guys, I managed to get this, but only by continuously holding
>>>> down find beam...
>>>>
>>>> https://www.dropbox.com/s/57qhj420d7yydxo/Star%20Wars%20lives.mp4
>>>>
>>>>
>>>> On Sun, Oct 20, 2013 at 11:05 AM, IAN EURE <ieure@mac.com> wrote:
>>>>
>>>>> On Oct 20, 2013, at 10:12 AM, Joel Griffin Dodd <
>>>>> griffindodd@gmail.com> wrote:
>>>>>
>>>>> > I'm tryjng to use my oscope as a vector monitor to check my star
>>>>> wars boards.
>>>>> >
>>>>> > For those of you that do this coild you tell me your settings. I
>>>>> have a 100mhz 2 channel tektronix 2337 and 1x - 10x 100mhz probes.
>>>>> >
>>>>> > I set the scope to XY input and see the trigger light on but can't
>>>>> seem to get any image. I have plenty of activity on my x and y outs on my
>>>>> board. Also do I ground my probes to the board when doing this
>>>>> >
>>>>> Yes, if your probes have the ground clips, you need to put those
>>>>> onto ground test loops. I don't know about Star Wars, but there are a few
>>>>> ground test loops around the vector output section of Tempest boards.
>>>>>
>>>>> Otherwise, most Tek scopes have a banana plug where you can plug in a
>>>>> ground, you can connect that to any ground on the PCB.
>>>>>
>>>>> Without ground, you will get an image, but it will be distorted and
>>>>> move around instead of steady.
>>>>>
>>>>> ---------------------------------------------------------------------------
>>>>> ** Unsubscribe, subscribe, or view the archives at
>>>>> http://www.vectorlist.org
>>>>> ** Please direct other questions, comments, or problems to
>>>>> chris@westnet.com
>>>>>
>>>>
>>>>
>>

---------------------------------------------------------------------------
** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
** Please direct other questions, comments, or problems to chris@westnet.com
Received on Sun Oct 20 20:18:22 2013