5 Sep
2011
5 Sep
'11
2:53 p.m.
On 02/09/11 01:37, jim s wrote:
I recently acquired a DEC GIGI and having read the vintage computer
forum post here:
http://www.vintage-computer.com/vcforum/showthread.php?20424-DEC-GIGI-and-m…
I was clued up to what might happen when it was turned on - after about
5 mins the magic smoke escaped from the 0.22uf metal film power supply
smoothing capacitor.
Apart from that it's in fine condition, except for some case yellowing.
All keys are present and it looks to have been kept inside all its life.
I wired up the 3 BNC RGB connections to the RGB connections on a 5 BNC
to VGA adapter and got a reasonable picture on my Iiyama 18.1" TFT flat
panel.
Regards, Mark.
On 09/01/2011
04:15 PM, Tony Duell wrote:
The monitor that was used with that was the BARCO which predates the
VR241
by many years.
At random times, I had acquired some Microvax 38 and cables and a dec
badged sony monitor, probably 17 or 19" I used the BNC inputs (not
the microvax cable) and was able to run the GIGI with it. I got the
GIGI from a scrap dealer in Kansas City, Mo, probably 20 years ago,
but no monitor at that time.
The monitor was perfectly happy to work with the Microvax systems and
a keyboard for some time as well. Sony monitors as OEM devices were
reputed to support striped sync (5 wire) composite sync (4 wire) and
Sync on green (3 wire), which was actually why I wanted that monitor,
as it ran well with a variety of devices.
There were still a number of vendors who managed to invert sync, and
such tricks, and so I was never able to use it for a universal
monitor, but it was my best bench monitor for a long time, along with
an OEM Hitachi, which worked on some RT and Sun systems I had at
various times.
thanks to the list for the replies on and off list, I should have no
problem figureing it out.
Jim I dug my
GIGI out of the pile this weekend, during a visit to my stuff
in Kansas City. I notice it is running out 4 bnc's and recall that
the
Dec monitor I had at one time had that sort of feed. Is it as easy
as 4
of 5 wires (sync on green maybe) to get it going?
I suspec the original mnonitor
was a DEC VR241. This is a TV rate
(RS170)
colour monitor. The inputs are either RGB + composite sync on 4 BNCs or
RGB (Sync on green) on 3 of the BNCs, selected by a swtich on the back.
FWIW, i am pretty sure this monitor is actually a Hitachi design.
The PSU
cicruit (in fact driven by the horizontal oscillator after startup) and
the thick-film hybrid module cotnainign he vertical defleciton
system all
pint to this. You say toyr terminal has 4 BNCs. Are these
labelled in any way?
It's not
unheard-of for DEC to have RGB (sync on green) on 3 BNC connector and a
separate monochrome composite video siganl on another connctor.
The 4 were Mono, RED Green and blue. For color it was sync on green.
When using the mono it was RS170 composite. (Any monitor capable of
black and white).
Allison