Mac G4 ADC video output

[MacMx]

Hello All - I recently purchased 2 NEC 24" monitors and connected them to a G4 with the standard card using DVI and ADC video outputs. I used an ADC to DVI converter cable for the second monitor.

I am getting a pinkish hue from the ADC video output. I swapped cables to make sure it wasn't a defective monitor and got the same result from both monitors when connected to the ADC output.

What's the deal? Do I need to purchase a new video card for my G4?

Thanks!