is there an IC that will generate a dummy NTSC signal without the Hsync and Vsync timing signals input.
it looks like the encoders (IE the AD724) require the Hsync and Vsync input.
Please let me know,
Try 74ACT715 - should be other similar IC's available by searching
The 74ACT715 is no longer being manufactured.
A search for similar has not come up with anything.
Our modern encoders-- ADV734X and ADV739X can generate test patterns with only a clock input I believe.
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