Hello Shinichi, The LMH1251 produces accurate H and V sync leading / rising edge, but the trailing / falling edge is set by RC delay (in certain cases) which may not be accurate enough. This is also discussed briefly in the datasheet section “H SYNC AND V SYNC CHARACTERISTICS” on page 9. If your LCD monitor is using the negative edge for syncing, I recommend that you invert the H and V sync pulses before presenting them to the LCD monitor. Regards, Hooman
↧