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Conference netcad::hub_mgnt

Title:DEChub/HUBwatch/PROBEwatch CONFERENCE
Notice:Firmware -2, Doc -3, Power -4, HW kits -5, firm load -6&7
Moderator:NETCAD::COLELLADT
Created:Wed Nov 13 1991
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:4455
Total number of notes:16761

2821.0. "MultiStack System and AUI" by LEMAN::GAILLARDON () Mon Oct 02 1995 12:23

        
        
        Going trough the documentation about the new MultiStack System, I 
        understand that there are two types of stacking units:
        - DETRX, with no AUI capability on the rear side, AND NO + 12V
        - DETAX, with AUI capability on the rear side, AND WITH 12V
        
        The problem is that the products with Front Panel AUI, ie DEWGB, 
        DEWGF, DEFAR, DEFMI are proposed as stackable units using a DETRX,
        part number being DExxx-Sx...(S = DETRX )
        (the front AUI port will not work ...DETRX = NO 12V). This is a 
        little bit confusing and may cause some config errors..!!
        
        A MultiStack System configuration where an AUI port of the above 
        module DEFMI is to be used, must be made of :
        DETAX-Sx + DEFMI-MA,  until an DEFMI-Ux exists and providing that
        the 12V of the DETAX feeds the AUI port of the module....correct..??
        
        Cheers, Robert.
T.RTitleUserPersonal
Name		DateLines
2821.1NO PROBLEMCONSLT::BUZZELLMon Oct 02 1995 12:317
    
    
         The part numbers are correct. The only module that supports the
    DETAX is the DETML. The power supply supplied with the DETRX will
    provide the appropriate power to the modules. DON'T create a problem
    wher none exists.
2821.2<still confused>LEMAN::GAILLARDONMon Oct 02 1995 12:468
    Glad to know...it's just a matter to have a clear understanding without
    creating unnecessary problems
    In the manual EK-DETXX-IN.A01,  page B-3, Electrical Spec Stackable
    Backplane the DETRX is stated as 0.00A @12V, 0.07A @ 5V, 0.35W.
    The DETAX is stated as 0.07A @5v, 0.50A @12V... then the conclusion
    that there was no 12 V on the DETRX.
    
    Robert.
2821.3NETCAD::HERTZBERGHistory: Love it or Leave it!Mon Oct 02 1995 13:158
    I can see how the docs are somewhat confusing.  The 12V current you
    stated in your previous reply is for 12V current used by the rear
    cover.  In the case of the DETRX, we were just saying the rear cover
    uses no 12V current.  In the case of the DETAX, we were just saying it
    could use as much as 0.5A, since that's the most a plugged-in MAU could
    possibly use.  We weren't specifying the power delivered to the module
    itself.  Both the DETRX and the DETAX make the 12V supply available to 
    the plugged in module.
2821.4tahnks..LEMAN::GAILLARDONMon Oct 02 1995 13:361
    Very clear now...Thanks