17 Apr
2013
17 Apr
'13
7:21 p.m.
On 04/17/2013 04:39 PM, Jochen Kunz wrote:
Oh yes, I remember those! They didn't last very far into the SPARCstation
era, if memory serves.
Those monitors are getting really tough to find. I'd like to have a few
for my 3/60s.
Quite a few
Sun framebuffers have ECL outputs, but they're all very old
ones (older than the 3/140) and all monochrome.
I have some SBus bwtwo with ECL
output. They where used in the first
SPARCstation 1s. Regarding the cable length problem: Smells a lot like
a termination
problem. There are special differential ECL transmitter and receiver
ICs with build in active termination for this purpose.
What are the characteristics of those terminators? I wonder if that's the
OP's problem as Tony suggested.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA