Dumb question about Tek 7XX4 mainframes

[BFoelsch]

I've become curious about the way these things operate when both vertical
and horizontal are in ALT mode.

Under these conditions, LEFT vertical is swept by RIGHT horizontal, and vice
versa. Using, for example, 7904A w/7A19 - 7A19 - 7B85 - 7B80.

Why? Seems counter-intuitive. Or am I doing something wrong?

Thanks in advance.

 

[Fred Abse]

On Tue, 31 May 2005 16:40:51 -0400, BFoelsch wrote:

I've become curious about the way these things operate when both vertical
and horizontal are in ALT mode.

Under these conditions, LEFT vertical is swept by RIGHT horizontal, and
vice versa. Using, for example, 7904A w/7A19 - 7A19 - 7B85 - 7B80.

Why? Seems counter-intuitive. Or am I doing something wrong?

It makes sense if you're using a two-slot module, like a 7S12 that goes in
the middle two slots, ie. right horizontal and left vertical.

--
"Electricity is of two kinds, positive and negative. The difference
is, I presume, that one comes a little more expensive, but is more
durable; the other is a cheaper thing, but the moths get into it."
(Stephen Leacock)

 

[Fred Abse]

On Thu, 02 Jun 2005 19:59:06 +0100, Fred Abse wrote:

ie. right horizontal and left vertical.

I think I meant right vertical and left horizontal, sorry.

--
"Electricity is of two kinds, positive and negative. The difference
is, I presume, that one comes a little more expensive, but is more
durable; the other is a cheaper thing, but the moths get into it."
(Stephen Leacock)

 

[BFoelsch]

"Fred Abse" <excretatauris@cerebrumconfus.it> wrote in message
newsan.2005.06.02.18.55.43.834732@cerebrumconfus.it...

On Tue, 31 May 2005 16:40:51 -0400, BFoelsch wrote:

I've become curious about the way these things operate when both
vertical
and horizontal are in ALT mode.

Under these conditions, LEFT vertical is swept by RIGHT horizontal, and
vice versa. Using, for example, 7904A w/7A19 - 7A19 - 7B85 - 7B80.

Why? Seems counter-intuitive. Or am I doing something wrong?


It makes sense if you're using a two-slot module, like a 7S12 that goes in
the middle two slots..............................

Thank you for a very sensible and informative answer!