No preview with DM5 on octane2 v12 Smoke 2007 irix

I have in my job an old Smoke 2007 that runs under an Octane2 v12 with the DCD option and a vob with the DM5 option too and a PAL sync generator plug it to the vob
His monitor is a TFT Dell 24wfp. I use the V12 DCD´s left dvi connector for the TFT dell monitor and the right for the DM5 .I work in Pal res and my problem is that I have no preview through the DM5. I followed the effects editing 2007 hardware setup manual,I tried to configure the v12 with different resolutions and combinations(cmb) without success.. I checked that the DM5 was active in init.cfg file,and yes, it is active and the pal signal its driven to ch2 but still does not show a preview on the client monitor.
The only way that I found for have a preview on the client monitor is to use the readback mode option, but I want the preview through the DM5 not to use the readback mode option.
The gfxinfo command tells me that the channel 0 is 1920x1154 50Hz
(1920x1154 25r2 DL LCD) and the channel 2 tells me that the video output is 720x576 50Hz (625I)
So far nothing I tried works
Its the DM5 broken or died or are there someone special script (cmb) for the v12 DCD graphics card?
Can someone tell me how I should setup the octane´´s v12 and dm5 for work in pal resolution?
Please its very important for me and my job. Any help woul be very much appreciated. Thank you at all.