From: hull@hao.hao.ucar.edu (Howard Hull)
Subject: Re: Cable ???
Organization: High Altitude Observatory/NCAR, Boulder CO
Date: Sat, 3 Oct 1992 23:56:47 GMT

In article <BvCJzw.247@cmptrc.lonestar.org> donb@cmptrc.lonestar.org (Don Bayless) writes:
>
>Help,
>
>
>   I have a Microway Flicker Fixer and Mitsubishi DiamondScan monitor
>   model No. AUM-1381A, with no docs and no CABLE.
>
>   Does anyone happen to know the pin outs of these 2 creatures???
>
>   Thanks,
>
>Don Bayless
>
>

Ok Don, here you go...

    Mitsubishi AUM1381A Diamondscan RGB ANALOG SIG 25 Pin D-SUB Male on cable
    Monitor has a 25-Pin D-SUB standard density Female connector
       PIN	Signal				Specification

	 1	Sync GND

	 2	Red video			0.6 Vp-p Positive
	 3	Red video GND			75 ohms

	 4	Green video			0.6 Vp-p Positive
	 5	Green video GND			75 ohms

	 6	Superimpose control (YS)	Low; 0~0.2V Composite Video  HS
	 7	Superimpose GND			High;1~2V RGB Analog, 75 ohm SW

	 8	Video input select (AV)		Low or Open;BNC input video
						High;Pin 9 video

	 9	Comp. video in			1.0 Vp-p 75 ohms
	10	Comp. video GND			Sync. Negative

	11	Comp. video out			1.0 Vp-p 75 ohms
	12	Comp. video GND			Sync. Negative

	13	PGA mode control		Low;400 lines,
						High or open;480 lines

	14	Blue video			0.6 Vp-p Positive
	15	Blue video GND			75 ohms

	16	Horizontal Sync/Comp.		TTL level

	17	Vertical Sync			TTL level

	18	NC
	19	NC
	20	NC

	21	INT				(+5V)[do usay "please fry me?"]

	22	Comp./RGB select		Low;RGB  High or open;composite

	23	Analog/TTL select		Low;TTL  High or open;Analog

	24	Remote				Low;Mode Switch is invalid

	25	GND (shield)


    Microway Flicker Fixer
    9-Pin D-SUB, Male on cable			25-pin D-SUB, Male on cable

        Pin	Signal				Corresponding AUM1371/81A pin

	 1	RED						 2
	 2	GREEN						 4
	 3	BLUE						14
	 4	HSYNC						16
	 5	VSYNC						17
	 6	GND						 3
	 7	GND						 5
	 8	GND						15
	 9	GND						 1

    NOTES:	Do NOT use the cable that is provided with the monitor.
    		Set Video/TTL/Analog switch to ANALOG.

If you own an Amiga 2000, and either have or do not have a Flicker Fixer for
it, you can buy one cable from Redmond cable, cut it in two in the middle,
and using some DB25 D-connector parts (gender as specified below) from Radio
Shack, you can make two 3ft cables which will allow you to use the Diamondscan
with either the Flicker Fixer or the Amiga direct.  (You may need to get a
9-pin A B C switch box and use the 9-pin straight-through cable that comes
with the Diamondscan if you want to do this without the inconvenience of having
to power down to disconnect and re-connect when swapping modes of operation.)
Ordering the aforementioned cable from Redmond solves two knotty problems one
commonly encounters in this adventure, namely, getting one's hands on a DB23
to fit an Amiga 1000 or 2000, and having the included buffer IC that keeps
the Amiga 1000 from thinking the Diamondscan is a Genlock (mostly due to the
low impedance of the Diamondscan video input lines).

Redmond cable's address and phone:

				Redmond Cable
				17371-A1 NE 67th Ct.
				Redmond, WA 98052
				(206) 882-2009

The cable to order from Redmond is the "RCA 644  AMIGA TO NEC II D23F TO D9M" 

The wiring for the split cable(s) is defined in the following table, with the
two common-specification DB25 ends in the center column:

   9-pin Male     color   25-pin D Male        color   23-pin Female (Redmond
  Flicker Fixer            Diamondscan                 IC buffered) Amiga RGB

        1       Brown            2              Brown            3 RED video
        2       Red              4              Red              4 GREEN video
        3       Orange          14              Orange           5 BLUE video
        4       Yellow          16              Yellow           B (11) HSYNC
        5       Green           17              Green            B (12) VSYNC
        6       Blue             3              Blue            16 GND
        7       Violet           5              Violet          17 GND
        8       Gray            15              Gray            18 GND
        9       White            1              White           19 GND
 Shell (shield) tinned bare     25              tinned bare   Shell (shield)
                                                               (23) B IC +5V

Standard Disclaimer: If you damage your equipment via participation in this
                     exercise, well, you've damaged your equipment in this
		     exercise, period.  I ain't responsible, never have been
		     (at least that's what my mother and father said)...

Good Luck...					Best Regards,  Howard Hull
						hull@ncar.ucar.edu
HHGTTG; About to be purged from a Vogon airlock and be allowed to die in space:
"I wish I had listened to what my mother told me when I was young!"
`What did she tell you?'  "I dont know.  I wasn't listening!"