Mitsubishi AM-2752A and Dreamcast cable

Alien Soldier · Post by **Alien Soldier** » Mon Oct 29, 2007 1:28 am

Hi there,

Can somebody explain to me what these buttons do exactly ?

V Posi
H Posi
V Size
H Size
V Scan Auto/Normal
Scan Over/under
Mono/8/16/Auto
Strength 1/2
Direction S/Neutre/N
Analogue
TTL

Thanks

rolins · Post by **rolins** » Mon Oct 29, 2007 2:48 am

My NEC Multisync 4PG (27inch) is has half of these functions on its remote, so I can you out here.

V Posi & H Posi -- move the picture up, down, left, right
V Size & H Size -- stretch or compress the picture
V Scan Auto/Normal -- (I think) defaults to factory settings, if you made any adjustments using the above functions.
Scan Over/under - in overscan, the picture takes up the whole screen and the 4 edges of the screen are not shown. The underscan is the opposite.

I have no idea what rest of this stuff does, as mine doesn't have this on the remote.

Mono/8/16/Auto
Strength 1/2
Direction S/Neutre/N
Analogue
TTL

Alien Soldier · Post by **Alien Soldier** » Mon Oct 29, 2007 3:19 am

Thank you very much,

I plugged my PS2 with Espgaluda and tate the monitor, I use the S-Video input because I don't have any RGS cable yet and all these Posi and Scan buttons don't seems to change anything with the screen at all. I mean i turn them min and max and nothing happens with the image, is it normal ?

rolins wrote:My NEC Multisync 4PG (27inch) is has half of these functions on its remote, so I can you out here.

V Posi & H Posi -- move the picture up, down, left, right
V Size & H Size -- stretch or compress the picture
V Scan Auto/Normal -- (I think) defaults to factory settings, if you made any adjustments using the above functions.
Scan Over/under - in overscan, the picture takes up the whole screen and the 4 edges of the screen are not shown. The underscan is the opposite.

I have no idea what rest of this stuff does, as mine doesn't have this on the remote.

Mono/8/16/Auto
Strength 1/2
Direction S/Neutre/N
Analogue
TTL

rolins · Post by **rolins** » Mon Oct 29, 2007 3:40 am

Alien Soldier wrote:Thank you very much,

I actualy use the S-Video input because I don't have any RGS cable yet and all these buttons don't seems to do anything with the screen at all. I mean i turn them min and max and nothing happens with the image, is it normal ?

I would say no, I mean the raster controls (changing the picture's position, width, and height, and the scan select) should be adjustable on video and RGB modes. It would be kind of lame for professional monitor if it couldn't. Are you using the remote control? Maybe the remote needs cleaning inside. Also are there dip switches in the back of the monitor? On my 4PG monitor, it has dip switches that can enable/disable certain functions.

Alien Soldier · Post by **Alien Soldier** » Mon Oct 29, 2007 3:51 am

I just got it today and I have to buy new battery for the remote, it don't seems to work (will see tomorow with the new battery)

I actualy move the buttons on the front of the monitor, the color, bright and all the other buttons nearby works perfectly, only these Posi, Size and Scan buttons don't do anything to the image.

Edit: I saw a High/75 ohms buttons on the back, don't know what it suppose to do.

rolins · Post by **rolins** » Mon Oct 29, 2007 4:06 am

Alien Soldier wrote: Edit: I saw a High/75 ohms buttons on the back, don't know what it suppose to do.

Set it always to "75ohms". If your using the pass-through function (meaning connecting more than one monitor) than you'll want to set it to "high".

Alien Soldier · Post by **Alien Soldier** » Mon Oct 29, 2007 10:24 pm

Ok, thanks

The remote don't work. It seems to be for another bigger monitor, the XC-3725C

I'll open the panel and check inside if everything is OK, I really don't know who owned this and what he did with it. The Posi, Size and Scan buttons are probably disconnected or broken inside. Any help will be very appreciated.

rolins · Post by **rolins** » Tue Oct 30, 2007 12:25 am

Alien Soldier wrote:Ok, thanks

The remote don't work. It seems to be for another bigger monitor, the XC-3725C

I'll open the panel and check inside if everything is OK, I really don't know who owned this and what he did with it. The Posi, Size and Scan buttons are probably disconnected or broken inside. Any help will be very appreciated.

Bummer

I'd give you some help if I could, but I'm not a electrician.

Good luck.

Alien Soldier · Post by **Alien Soldier** » Mon Nov 05, 2007 2:11 am

I'm thinking of buying both a VGA box and a VGA to BNC 5 cable and put them together to be able to plug the Dreamcast on my monitor. I would like to know what kind of signal I'll get with that, RGB 31 Khz or 15 Khz ?

Thx

neorichieb1971 · Post by **neorichieb1971** » Mon Nov 05, 2007 2:43 am

Some monitors controls only work in digital mode. Someone explained it once for my PVM2950. I think for those controls to work you have to be in TTL mode, which is a sort of CGA mode (archaic video signal used in the early 90's).

Since your using Svideo connections, it won't work. Your sending it the wrong kind of video signal. I admire your enthusiasm, but don't get buzzed in there

Alien Soldier · Post by **Alien Soldier** » Mon Nov 05, 2007 2:48 am

neorichieb1971 wrote:Some monitors controls only work in digital mode. Someone explained it once for my PVM2950. I think for those controls to work you have to be in TTL mode, which is a sort of CGA mode (archaic video signal used in the early 90's).

Since your using Svideo connections, it won't work. Your sending it the wrong kind of video signal. I admire your enthusiasm, but don't get buzzed in there

Thanks for letting me know, feel better now. There is a DB-9 plug on the back with TTL written at the bottom, do you know the pinout for it ?

Thanks

Alien Soldier · Post by **Alien Soldier** » Mon Nov 05, 2007 3:41 am

I found some DB9 pinouts, don't know how many of you guys have the same monitor but if I need it, you probably need it too.

Here's the specifications of the monitor

Picture Tube:
Viewable Measurement: 27 inches
Shadow Mask: 0.76mm~0.95mm Stripe pitch
Faceplate: Tinted Glass

Resolution:
RGB mode: 600(H) pixels X 800(V) pixels
Composite mode: 500 lines

Input/ Output Signals:
Composite Video
RGB TTL
Monochrome TTL
RGB Analog
The scanning frequency for all the inputs is: Horizontal
15.6-36kHz, Vertical 45-90Hz. This however excludes the
Composite input that has the following scanning frequencies:
Horizontal 15.734kHz (NTSC) 15.625 kHz (PAL),
Vertical 59.94Hz (NTSC) 50Hz (PAL).

Dimension
671mm(W) X 587mm(H) X 180mm(D)
26-13/32"X 23-3/32" X 18-15/16"
Unit Net Weight:
53kg (116.7lbs.)

Special Features:
Automatic tracking of wide range horizontal and vertical
scanning frequencies.
f(H): 15.6 ~ 36 kHz
f(v): 45 ~ 90Hz
0.76mm stripe pitch and tinted glass CRT Eqipped DBF
(Dynamic Beam Focus)
Broad Input Compatibility
NTSC/PAL Composite Video, S-Video
RGB TTL
RGB ANALOG
Monochrome TTL
Adjustable screen size and position

Mitsubishi - Mega View 29 - AM2752A 29 Inch Multimedia Presentation Monitor
Specifications: CRT Stripe Pitch: 0.76mm centre / 0.94mm corner
CRT Size: 29 Inch (27 Inch Viewable)
CRT Faceplate: High contrast tinted glass (51% light transmission)
Maximum Resolution: 640 dots x 480 lines
Horizontal resolution: 600 TV lines
Video Bandwidth: 8MHz
RGB Bandwidth: 15MHz at 3dB
Scan Frequency: H: 15.6-39kHz - V: 45-100Hz
Scan Mode Memory: MPU-based
Remote Control: Wireless, multi-function with on-screen display
Input Signals: NTSC/PAL/SECAM composite video (automatic selection)
analog RGB (sync on green, composite or seperate sync, analog sync),
TTL RGB (CGA, EGA, etc.)
monochrome TTL,
Super VHS
Inputs: 2 pair stereo RCA, external speaker outputs, composite video:
Video1-BNC/SVHS 4 pin auto selecting
Video2-BNC RGB
Analog: 2 inputs 1 set of 5BNC's and 1 25-pin connector
TTL: 9 pin
Outputs: 1 pair stereo
RCA Composite video: Video output BNC RGB analog: 1 set of 5BNC's
Power Requirements: 100-120 VAC or 220-240 VAC, 50/60Hz (switchable)
Power Consumption (average): 400W

Here's a pic of the back with all the diffrent plugs (not my pic)
http://www.markglinsky.com/pics/Mits27Mona.jpg

I'll buy some cable and try different method and see what's happen. I want those Posi, Size and Scan buttons to work.

neorichieb1971 · Post by **neorichieb1971** » Mon Nov 05, 2007 4:09 am

If you want just plug a DC or PC into the monitor and check the access of the controls in question. That DB9 is most certainly just a standard VGA type input so will work with anything.

A supergun is not going to output the right signal you need to access those controls. You will need an XRGB2 for that.

I am not sure if you can convert standard video into CGA, they share the same commodities so maybe there is an adaptor.

Post by **Dave_K.** » Mon Nov 05, 2007 5:51 am

I've hacked my DC-VGA box to output both 31khz and 15khz via the VGA port.

I also have a spare VGA to 5-BNC cable.

PM me if you want to buy the cable. I can also hack your DC-VGA box for a small fee if you send it to me. Otherwise see my tips page on BYOAC (http://arcadecontrols.com/arcade_consoles.shtml).

Alien Soldier · Post by **Alien Soldier** » Tue Nov 06, 2007 1:16 am

neorichieb1971 wrote:If you want just plug a DC or PC into the monitor and check the access of the controls in question. That DB9 is most certainly just a standard VGA type input so will work with anything.

A supergun is not going to output the right signal you need to access those controls. You will need an XRGB2 for that..

I'll get a Component Y,Pr,Pb/S-Video/Composite/RGB supergun (all together with j-rok encoder), do I still need a XRGB2 ?

Alien Soldier · Post by **Alien Soldier** » Tue Nov 06, 2007 1:17 am

Dave_K. wrote:I've hacked my DC-VGA box to output both 31khz and 15khz via the VGA port.

I also have a spare VGA to 5-BNC cable.

PM me if you want to buy the cable. I can also hack your DC-VGA box for a small fee if you send it to me. Otherwise see my tips page on BYOAC (http://arcadecontrols.com/arcade_consoles.shtml).

Wow, thanks for the info, I'll try to mod my VGA cable when I'll get it