[misc.wanted] Anyone have info on a NEC Multisync monitor??

jay@retix.retix.com (Jay Logue) (05/30/91)

I have an old NEC Multisync monitor which appears to support both
digital and analog inputs via a single connector.  (The signal type is
selectable using a switch located on the back).  However, as I don't
have any docs, I don't know the configuration of the pins on the
connector when it is in analog mode.

Can anyone send me this information?  I imagine its readily available
in the user documentation that came with the monitor.

Thanks in advance!


Jay Logue

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wdp@ee.egr.duke.edu (William D. Palmer) (06/05/91)

Wednesday, 04 JUN 91

To: Jay Logue (jay@retix.retix.com)

In reference to your posting in comp.sys.ibm.pc.harware (10048):

> Subject: Anyone have info on a NEC Multisync monitor??
> Date: 29 May 91 23:47:11 GMT

> Can anyone send me this information?  I imagine its readily available
> in the user documentation that came with the monitor.

I presume you want to use it for VGA.  If this is so, you need to make an 
adapter cable from an HD-15P at the VGA card to a DB-9S at the multisync.
Typical pinouts are shown below.

          VGA output               NEC input

          1. RED (out)             1. RED (in)
          2. GREEN (out)           2. GREEN (in)
          3. BLUE (out)            3. BLUE (out)
          4. Monitor ID2           4. Horizontal SYNC (out)
          5. GROUND                5. Vertical SYNC (out)
          6. RED (return)          6. GROUND
          7. GREEN (return)        7. GROUND
          8. BLUE (return)         8. GROUND
          9. No Pin                9. GROUND
         10. SYNC (return)
         11. Monitor ID0
         12. Monitor ID1
         13. Horizontal SYNC (out)
         14. Vertical SYNC (out)
         15. Reserved

So you need to make a cable like this

          HD-15P                   DB-9S           FUNCTION

          1. --------------------- 1.              RED
          2. --------------------- 2.              GREEN
          3. --------------------- 3.              BLUE
         13. --------------------- 4.              H SYNC
         14. --------------------- 5.              V SYNC
          5. ------------------+-- 6.              GROUND
                               |-- 7.
                               |-- 8.
                               +-- 9.

Set the switches on the NEC to ANALOG, MANUAL, and 64 COLOR.  Run a 
program that uses graphics mode and adjust V HOLD for no roll as you 
switch back and forth between text mode and graphics mode.  Adjust the 
CONTRAST and BRIGHTNESS controls until the colors look O.K.

THis information is tested only on the NEC Multisync JC-1401P3A with a 
Video 7 VEGA card.  Any use with other equipment is strictly framming on
the permis of the derialtor, blah, blah, etc.

> Thanks in advance!

You're welcome.

> Jay Logue

Dev Palmer
wdp@dukee.egr.duke.edu
Duke Electrical Engineering
Room 309 Old Engineering Bldg.
Durham, NC  27706
(919) 660-5282