29 Dec
2002
29 Dec
'02
5:42 p.m.
Tonight while looking for a wall wart for an old Hayes modem, I
discovered something that I didn't know I had: some sort of monitor
cable adapter. At one end is a Sun workstation style monitor
connector from which four cables are connected to BNC connectors with
reg, green, blue and white labels. Does anyone on this group knows if
it will work with an HP (Sony) 98789A fixed frequency monitor which
has R, G, B and HD and VD sync connectors (can I use just one of these
syncs?). I'd hook it up to see if it works without asking, but I'd
prefer not to have to carry the monitor down to the basement if it
isn't going to work. :-)
--
Copyright (C) 2002 R. D. Davis The difference between humans & other animals:
All Rights Reserved an unnatural belief that we're above Nature &
rdd(a)rddavis.org 410-744-4900 her other creatures, using dogma to justify such
http://www.rddavis.org beliefs and to justify much human cruelty.
29 Dec
29 Dec
6:12 p.m.
On Mon, 30 Dec 2002, R. D. Davis wrote:
Tonight while looking for a wall wart for an old Hayes
modem, I
discovered something that I didn't know I had: some sort of monitor
cable adapter. At one end is a Sun workstation style monitor
connector from which four cables are connected to BNC connectors with
reg, green, blue and white labels. Does anyone on this group knows if
it will work with an HP (Sony) 98789A fixed frequency monitor which
has R, G, B and HD and VD sync connectors (can I use just one of these
syncs?). I'd hook it up to see if it works without asking, but I'd
prefer not to have to carry the monitor down to the basement if it
isn't going to work. :-)
That's going to depend more on the graphics adapter than the cable
adapter. If the adapter outputs sync-on-green (old DEC, SGI), you can
use only the R, G, and B connectors, or use the white one on the HD sync
if your graphics card outputs Composite-Sync (Macs, most Sun, etc.)
All of the 5-BNC displays I've owned would work with mono (one
connection to green), RGB, Composite-Sync, or Separatee-Sync. However,
fixed-frequency displas often won't work because the graphics adapter
can't be tuned to the right sync & refresh. My HP 98754A - same specs,
bigger tube - will work with an MCA color graphics adapter, although the
picture is square, an IBM X-Station 150, most of my 9000/7xx boxes, and,
IIRC, the 4-plane color board in one of my VAXstation 3100s.
The specs are 63.35KHz and 60Hz, by the way. You can probably
underdrive it by 5%, and I wouldn't overdrive it more than 1-2%, if at
all.
What are you going to connect it to?
Doc
6:42 p.m.
Quothe Doc Shipley, from writings of Sun, Dec 29, 2002 at 11:14:16PM -0600:
What are you going to connect it to?
Oops... I forgot to mention that. The plan was to attach it to a
Sun Ultra-1, if that will work.
--
Copyright (C) 2002 R. D. Davis The difference between humans & other animals:
All Rights Reserved an unnatural belief that we're above Nature &
rdd(a)rddavis.org 410-744-4900 her other creatures, using dogma to justify such
http://www.rddavis.org beliefs and to justify much human cruelty.
7:09 p.m.
On Mon, 30 Dec 2002, R. D. Davis wrote:
Quothe Doc Shipley, from writings of Sun, Dec 29, 2002
at 11:14:16PM -0600:
Probably not. I don't have the specs on the various sbus
framebuffers, but I think their outputs are all a little different than
HP or IBM standard.
OTOH, other than some wasted effort hauling it downstairs, it
shouldn't hurt to try it, if you're quick to shut it down... ;)
Doc
What are you going to connect it to?
Oops... I forgot to mention that. The plan was to attach it to a
Sun Ultra-1, if that will work.
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