The Lighting Controller

I've been building a rock show around the ShowXpress software and so far it has been working fantastic. I am using a projector via Screen Control and have been testing with a 6ft VGA to VGA cable. It all worked fine. I purchased a 50 ft cable to use and now when I go to screen mode the software will not recognize the projector. Are there limitations in the length a cable can be, or, is there a workaround that can possibly solve this issue?

Thanks
C Daigle

We already used 25ft VGA cables for tradeshows without any problem, but we do not know with 50ft.
Anyhow, 50ft looks a bit long for VGA.

We have used 50 metre projector runs with no problem. We do not use the standard vga cable, but use cat5 cable.
There are numerous sites on the web showing pin connections for this.
John

First of all, thanks for replying and replying quickly. Please let me explain a bit more. I am running out of the Mac Book Pro using the Mini DisplayPort with a VGA Adapter. The Epson projector also has a VGA "computer" connector. Can you please point me to one or more of those web sites that you have mentioned or tell me if there is an obvious flaw with my configuration. Thanks again.

Listed below are the connectiions.

VGA Video connector pinouts:
Pin # - Signal Name - CAT 5 Conductor

1 - Red - Orange
2 - Green - Green
3 - Blue - Blue
4 - None
5 - Gnd - No Connection
6 - Gnd - Orange/White
7 - Gnd - Green/White
8 - Gnd - Blue/White
9 - None
10 - Gnd - No Connection -
11 - None
12 – DDC - No Connection
13 – Hsync - Brown
14 – Vsync - Brown White
15 – DDC - No Connection

I made 2 cables about a metre in length each with vga socket to rj45 box, and then have various cat5 cables (ie 2 metre, 5 metre, 10 metre, 25 metre and 50 metre)

John