kda50 manual and sdi cables & questions - test-drb@ccmp.vtda.org

29 Apr 2005

Antonio Carlini <a.carlini at ntlworld.com> wrote:

...
  The RA7x series all accept some kind of OCP, but they
all
 (or at least all the ones I have seen) have some way of 
 configuring them without the need for the OCP. I'm pretty
 sure all the manuals I have scanned are available via Manx and 
 that should cover the RA70,RA72 and RA73. 
I use RA72 and RA73 drives in all my Q22-bus MicroVAXen.  I house them in
BA123 cabinets, mount them on the appropriate sleds, and connect them to
the KDA50 with the 17-00951-03 cable.  It's a black ribbon coax cable
consisting of 4 little strips, one per drive.  On one end they are all
joined together to plug into the controller, on the other end each strip
has the connector that plugs into an RA7x series drive.  I believe the same
cable was used in BA213s except that the ends plugged into a bulkhead instead
of RA7x drives.

I do not have the OCP.  Each RA7x drive has a block of 3 DIP switches on
the side which is normally unused but selects the unit number in the absence
of the OCP.

...
  The biggest SDI drive I recall (in capacity) was the
RA74 which
 was a whopping 3.5GB - not a whole lot to shout about! 
Are you sure there was an RA74?  I thought it only existed in the RF version
and the biggest SDI drive was RA73.

MS