dummy unit

[Ryba]

Dummy unit for the I/O system
or
Dummy unit for the CPU system
can somebody maybe explain what is dummy unit for?
more about the context on
http://www.abb.com/global/seapr/SEAPR035.NSF/viewunid/7080817EBD54515F412567
7400318656/$file/0602EN51.pdf

thanks for your help

 

[Fred McKenzie]

<< Dummy unit for the I/O system
or
Dummy unit for the CPU system
can somebody maybe explain what is dummy unit for? >>

Ryba-

I am only guessing, but it appears that the "dummy unit" is just that - a
non-functional piece of hardware that fills the space where the real units
would go if you decided to add them. It might consist of an empty shell with a
front piece that covers an otherwise vacant hole.

One reason for such an arrangement would be to maintain the air flow
configuration for cooling a rack of equipment. If module spaces were left
empty, cooling air would escape, and operational modules could overheat.

In other words, the unit is capable of supporting a number of I/O and CPU
modules, but only comes equipped with a smaller quantity. If you decided to
expand, you would remove the dummys and replace them with functional modules.

Fred

 

[CJT]

Fred McKenzie wrote:

Dummy unit for the I/O system
or
Dummy unit for the CPU system
can somebody maybe explain what is dummy unit for?

Ryba-

I am only guessing, but it appears that the "dummy unit" is just that - a
non-functional piece of hardware that fills the space where the real units
would go if you decided to add them. It might consist of an empty shell with a
front piece that covers an otherwise vacant hole.

One reason for such an arrangement would be to maintain the air flow
configuration for cooling a rack of equipment. If module spaces were left
empty, cooling air would escape, and operational modules could overheat.

In other words, the unit is capable of supporting a number of I/O and CPU
modules, but only comes equipped with a smaller quantity. If you decided to
expand, you would remove the dummys and replace them with functional modules.

Fred

I think you've got it on the first try.

--
The e-mail address in our reply-to line is reversed in an attempt to
minimize spam. Our true address is of the form che...@prodigy.net.