4 Aug
2005
4 Aug
'05
2:39 p.m.
At 12:27 AM 8/5/05 +0100, you wrote:
Yes, the manuals are on Bit-savers but IIRC they don't recall them
giving any details about the PSU.
There were 2 PSUs from Diablo, one using a transsitorised
Do you have schematics for any of those?
Joe
The RK05 uses
a DEC backplane
Althoguh if you get a real Diablo cable, it has the connector mounted on
a little PCB, with a trasnistion connector and then a length of ribbon
cable on that. If you take off one end, the wires are in almost the right
ordser to solder to a DEC 'unibus' cable board to link to the RK11-C or
whatever. I wonder why :-)
block internally, with genuine Unibus cables
(RK11D) or a DEC-style
paddle connector and 40-pin ribbon cables (RKV11D, RK8E).
_Electrically_ the Diablo 30 should be the same as a real RK05, but
mechanically, the cables are entirely different.
Yeah that was an unplesant surprise!
BTW I found out that the d30 uses an external power supply. Does anyone
have the specs or pinout for it or even an extra PSU?
I thought the manuals were on bitsavers. The PSU pinout should be in
there. regulator, the other using a ferroresonant trasnformer.
DEC also made
their own PSU (H734 or something) for these drives.
Can you check and make sure that that's the correct PN? If it is, I'll
go hunt for one. There are piles of DEC PSUs in Melbourne.
>
>The drive chain also needs to be terminated. In the case of an RK05,
>it's an M930 Unibus terminator in the last drive. Not sure about a
>Diablo 30, unless you hang a real M930 off of one of those cable
The Diablo terminator is a PCB stuffed with resistors soldered to the
connector. There's a +5V pin on the connector to power the terminator, of
course. I have _one_ of them, I also have 2 drives and the
interconnecting cables, so it's not up for grabs.
-tony