Subrack

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Revision as of 16:17, 24 April 2013 by Mandana (talk | contribs) (Dimensions and Weight)

Template:Hierarchy header Two types of MCE subracks are in production:

  • a large (72-HP) subrack containing 5 MDM connectors and four read-out cards.
  • a small (48-HP) subrack containing 3 MDM connectors and two read-out cards.

An intermediate sized 60-HP subrack was also prototyped but not produced in large numbers. Functionally it is equivalent to the modern 48-HP subrack.

(what is HP?)

Components

A fully-kitted subrack contains:

It also contains the following which are generally not "user-replaceable":

Notes
  • before the development of fast bias cards, in each subrack, one bias card was often replaced with a biasing address card (BAC), to allow for fast SQ2 switching. Modern bias cards can now perform fast switching and the BAC option is now obsolete.
  • the 72-HP subrack also has space for a power supply (PSA) which is now obsolete and no longer installed. See MCE Power Requirements for current subrack power options

Dimensions and Weight

  • A fully populated 3-MDM (5-MDM) MCE weighs approximately 9.5 kg (13 kg). This does not include the weight of the power supply and power cable.
  • Dimensions for a 48-HP MCE: ~ 40cm x 31cm x 34cm (L x W x H)
  • Dimensions for a 72-HP MCE: ~ 40cm x 43cm x 34cm (L x W x H)
  • Note: We are currently working on reducing the depth of the subracks by ~5cm and this will reduce the weight as well.

(what is HP?)

Other information