+ Reply to Thread
Results 1 to 6 of 6
  1. #1
    Ultimate Member
    Join Date
    Feb 2002
    Location
    Mauldin, SC
    Posts
    1,386

    9-pin to 15- pin VGA question.

    I have a friend who looks to be suffering from a dying monitor
    hooked up to , I believe an old AT setup.

    Can I use a 9-pin(male) to standard 15-pin(female) adapter, and
    hook up a new monitor to this desktop PC? Will this work?

    I've been looking for such an animal. Here's one:

    http://store.yahoo.com/cablesonline/db9maltohdfe.html

    Also, what is the diference between "DB" and "HD"?

    Thanks.

    - Bill

  2. #2
    Human voltmeter DanU's Avatar
    Join Date
    Oct 2001
    Location
    SF Bay Area
    Posts
    4,214
    That adapter won't work. EGA/CGA are digital signals while VGA is an analog signal. Not only that, but no VGA monitor I know of is capable of syncing to the slow EGA/CGA scan rate. You'll not only need to convert the digital signals to analog, but you'll also need something called a scan doubler. These devices are expensive.

    The difference between DB and HD is the pin density. CGA/EGA cards use the DB-9 plug (looks exactly like a 9-pin serial port). VGA cards use the HD-15 plug. The size of both are the same, but the HD-15 plug has 15 pins more densely packed together.

  3. #3
    Ultimate Member
    Join Date
    Feb 2002
    Location
    Mauldin, SC
    Posts
    1,386
    Thanks, Dan:

    That was exactly the clarification and info I was looking for. . .

    - Bill

  4. #4
    Junior Member
    Join Date
    May 2003
    Location
    Canada
    Posts
    12
    I found this. http://dragonsden.emuunlim.com/ddvgatutl.htm A VGA to Arcade Monitor Tutorial.

    I've been trying to hook up an old commodore 10845 monitor (analog RGB in) to a 32meg vga card. I've got a picture but it's all messed up. Is there a way to fix this?

  5. #5
    Ultimate Member
    Join Date
    Oct 2001
    Location
    Augsburg, Germany
    Posts
    5,584
    No. Wrong frequency. These old home computer monitors are 15.7 kHz line frequency, matching international TV standards. Standard VGA is twice that, higher resolution modes even more. No can do.

  6. #6
    Junior Member
    Join Date
    Dec 2012
    Posts
    1

    coverter for 9 pin 15 pin

    Quote Originally Posted by DanU View Post
    That adapter won't work. EGA/CGA are digital signals while VGA is an analog signal. Not only that, but no VGA monitor I know of is capable of syncing to the slow EGA/CGA scan rate. You'll not only need to convert the digital signals to analog, but you'll also need something called a scan doubler. These devices are expensive.

    The difference between DB and HD is the pin density. CGA/EGA cards use the DB-9 plug (looks exactly like a 9-pin serial port). VGA cards use the HD-15 plug. The size of both are the same, but the HD-15 plug has 15 pins more densely packed together.
    hi there,
    need to ask a question to you about our problem.
    i need a cable and will define what kind of condition i am in.
    i have security camera device where cameras are connected.
    i was using it with a tv and now i got an lcd monitor with 15pin vga cable to connect that device.
    my lcd monitor's cable does not fit to that device.
    on the back of device there is 9 pin female port however my lcd monitor has 15 pin vga cable.
    so how can i connect that monitor to my device ?

Quick Reply Quick Reply

If you are already a member, please login above.

What planet do we live on?

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Copyright 2014 All Enthusiast, Inc