Just to clarify, the following is the pinout of a terminator that works
with an
RL01 drive. It *should* work fine with an RL02 since the same interface
card works with both, so unless there's some oddity about the RL02, this
should do the trick:
Opening the pack, there is a single large resistor pack, 40 pin.
Looking at the back of the resistor pack (i.e. looking at the outside of
the RL01 drive connector)
the pack is marked with pin numbers; pin1 is at the bottom right, pin 2
is at the top right, pin 39 is at the bottom left
and pin 40 is at the top left. Pin 39 has been cut. All other pins are
connected.
The resistor pack part number is 13-13242-00 SSM 7934
Neither side appears to have commoned pins.
Each opposing pair of pins has 160 ohm between them (i.e. between
pins 1-2, 3-4, 5-6 etc.) Obviously 39-40 is open circuit.
I think it would be easy to make using a 40 way pcb-mount idc header
with some shrink sleeving as the terminator isn't subject to any
mechanical strain
(unlike the cable). You could then attach this to the 40-way IDC socket
which normally
plugs into the DEC connector on the inside
of the drive, and you would then just be using the external DEC connector as
a seal to stop dust, etc from entering the unit. Even though the RL01
seems quite
tolerant to the ingress of dust, (some of the maintenance procedures
involve running the
drive the the covers off) it doesn't do to take any unnecessary chances
with kit this old.
Hope this helps,
Francis
----
Patrick Finnegan wrote:
>I'd much appreciate that if possible. I'm thinking it just is a set of
>resistors from each signal line to +ve volts somewhere (or maybe ground),
>and there's just a set of open-collector drivers to drive the lines (thus
>why it does nothing without one).
>
>Thanks!
>
>-- Pat
>
>On Tue, 13 Aug 2002, Francis Bell wrote:
>
>
>
>>If you don't get an pinout anywhere else, I have an RL01 terminator
>>here that I can take apart... AFAIK the cables and terminators are identical
>>since it's the same controller for both.
>>
>>Regards,
>>
>>Francis
>>----
>>
>>
>
>
>
>
Received on Thu Aug 15 2002 - 11:37:37 BST