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Conference stkhlm::magtape

Title:MAGNETIC TAPEDRIVES
Moderator:STKHLM::GJOHNSSON
Created:Mon Sep 21 1987
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:3775
Total number of notes:13147

3656.0. "TLZ07-BA jumper info needed" by QBUS::E_BURKHALTER () Fri Feb 14 1997 05:41

    
    This note is from an field engineer that has a problem
    with the early version of TLZ07-BA.  He has ordered
    three new TLZ07-BAs and has not been able to get
    them to work on the AS1000 running VMS 6.2.
    
    *********************************************************
    
    
    Subj:   tlz07 revised rev a5
    
    ED,
    
    In revisiting this Tlz07 adventure it appears that on the revised rev
    a5, unless you have a remote scsi id switch all the drive setuo is
    dome using the dip pack on the bottom of the drive. In this case I was
    reconfiguring the jumper pack after having removed the customers rev a2
    by the setting on the rev a2 dip switch. Wrong thing to do .
    
    So my question is this if the revised version a5 comes factory
    configured
    with pins 15,16 Termination power jumper-on enabled. Do i need to
    disable
    it ?
    
    The rest of the jumpers are as follows. 1-6=off disabled
                                          11-12=off disabled
     
                                          15-16
    
    =on enabled
    The EK-tlz07-om manual pages 3-4 thru 3-6 dont address jumper 15-16 in
    a replacement mode. The system is an Alphaserver 1000 single bus with
    active termination at end of the bus. Any thoughts
    
    
    Regards Greg Feinberg
     
    
    **********************************************************************
    
    I have not been able to come up with the information.
    
    Any ideas?
    
    Ed Burkhalter
    CSC Atlanta
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3656.1not sureUTRTSC::VISSERSat Feb 15 1997 00:5420
    
    It must be my Dutch, which causes me problems understanding the real
    issue, except the Term Power:
    
    	The TLZ07-BA (as they come in) have the Term Power Jumper IN (and
    	it's the only jumper installed) for the newer-style Rev A5.
    	I have replaced several TLZ07-BA's in AS1000's lately (all A5's)
    	I and just left the Term Power jumper in. But with the jumper
    	removed, it must still work, because the SCSI-port in the AS1000
     	delivers Term Power for the far-end terminators.
    
    For the Rev A5's in a AS1000, The SCSI-ID's can be set by the switches
    OR the jumpers (it's wired-OR'd). Default: Leave the ID-jumpers out
    and use the switches for ID-setting. (all this is labeled on the
    drive).
    
    Not sure about the statement 'that it did not work'. 
    WHAT did not work?
    
    			Jan