Setting monitor's mode: Analog / Digital?

Hello

Two weeks ago, I bought a new LCD monitor, LG L1932TQ. When I finished installing the driver, a message appeared saying that the driver was installed successfully for the monitor LG L1932TQ (Analog). Also when I go to the Display Properties, there is written (Analog) as well. Does that mean that I can choose to work in either Analog or Digital mode? If so, how can I change it to Digital?

Thanks in advance,
Louie.

The monitor should have both VGA and DVI input connectors. To get digital you have to hook up the monitor with a DVI cable. This assumes that you have a video card with a DVI output.

well the monitor has 3 cables and i have connected all three.. does this mean i have to unplug the analog cable so i can get the digital working?

Do NOT use the VGA cable. Only use the digital DVI cable for video. Using the DVI cable connect one end to the DVI
connector on the monitor and the other end to the DVI connector on the video card. You should NEVER connect
cables to both connectors on the monitor. The only rare exception is if your monitor can support switching
between two video sources such as using one monitor alternately for two computers. I have only seen one
monitor support this.

The only other cable you need to connect is the power cable.

When your computer boots the monitor should check both analog VGA and digital DVI inputs for a signal from
the video card. It should automatically select the right one after a brief search. Most monitors should work
this way. Only on rare occasions should you have to set the input manually using the setup program built
into the monitor.

A lot of video cards now days have two connectors. They are either:
1) VGA connector and DVI-I connector, or
2) Two DVI-I connectors

The DVI-I connectors are special connectors that are normally used with DVI input of LCD monitors. They also
can be used with a VGA monitor input (either CRT or LCD) by using a DVI-I to VGA adapter. This adapter is
normally supplied with most video cards that have a DVI-I connector.

The following is a typical video card:

The VGA connector is on the left. The DVI-I connector is on the right.

With the two connectors on the video card you can use either one or two monitors at one time.

The left VGA connector can be used with a VGA cable only. You can use it to connect to either an analog VGA
monitor or a LCD monitor using its VGA input connector.

If you use a DVI cable with the DVI-I connector only the right 24 (3x8) pins on the right of the connector
are used. These contain digital-only data for a DVI connection on an LCD monitor.

If you use a DVI-I to VGA adapter with the DVI-I connector only the 4 pins on the left are used. These
contain analog-only data for a VGA monitor connection. With the adapter then you can use a standard VGA cable.

The following is typical LCD monitor video connections:


The left video connector is a DVI (aka DVD-D) connector. Note the absense of the 4 analog pins seen on the DVI-I
connector on the video card. These are not needed because this input is digital only.

The right video connector is a standard VGA monitor input.

Note 1: the DVI connector is sometimes missing on low end LCD monitors. You can only use analog VGA cables
with these monitors since they have a VGA connector.

Note 2: You must NEVER use both the VGA and DVI connectors on an LCD monitor at the same time.

Well I did not know that before.. I will unplug the VGA now.. but has it done any harm to the monitor?

No, don't worry about physical damage to it, it is merely because DVI connections offer superior image quality. I guess the statement may have sounded a little bold considering we are just talking about marginal increases in image quality here

Your monitor is fine ; - )

My LCD's are one of those "rare" kinds that switch. I don't see where the danger is by connecting both other than that it will default to analogue and won't look as good.

Thanks for your help.. I've unpluged the VGA and the monitor is now working with DVI-D (i'm not sure it's VGA cos it's written on the cable D-SUB, but whatever!). But now when I go to Settings in the Display Properties, I only have 3 resolutions to choose from: 800x600, 1024x768, 1280x1024, though before I had more than 3. I tried to reinstall the drivers but it wouldn't help. Is there anything I can do? I used to work with 1152x864.

D-SUB is the common name for the 15-pin connector used for VGA.

I just looked at the manual for your monitor. "1152x864" is not even in the list of resolutions. There is a "1152x900" at 65Hz.

A clue comes from the maximum resolutions given:
Analog: 1280x1024 @75Hz
Digital: 1280x1024 @60Hz

I have a feeling that in digital mode the maximum refresh rate for your monitor is only 60Hz. That would explain the three resolutions you have to choose from. They are the only resolutions (other than 640x480) that are supported at 60Hz. Since analog mode appears to support a higher refresh rate, you naturally would have more resolutions to choose from.

Not all monitors are the same. I have a Samsung 930B 19 inch LCD monitor. I am also running my monitor using a DVI cables. Here are the choices I have:


It is apparent that the maximum refresh rate in digital mode for my monitor is 75Hz. Note that for my monitor "1152x864" requires a refresh rate of 75Hz.

One last thing. Why do need to run at "1152x864"? For LCD monitors it is usually recommended that you stick to the native resolution of it. For 19 inch LCD monitors it is "1280x1024". On rare occasions I will use some other resolution like when a game requires it but otherwise I stick to "1280x1024".

Well, there are some reasons why people would choose lower resolutions. Mine is probably that my parents use the PC too and it's much more comfortable for them looking at a bigger and clearer picture..

Hi,

I have a Samsung monitor attached to an HP desktop computer.

I have an analog D-Sub cable but when I connect it up the monitor shows, on the upper left hand side of the screen, a window that keeps alternately flashing analog/digital.
It doesn't seem to be able to decide which one it wants to be.

In order to get the monitor working, I have to use a DVI cable that splits to two D-sub outlets.

When I check the display mode it says Analog. It's most strange. I'd like to use just the D-sub cable but the monitor refuses to display properly with it.

I have looked at troubleshooting but there doesn't seem to be an answer for this problem.

I'd really appreciate any advice about this.

Cheers,

Ross Byers