Version 1.1 3-4. Interface Circuit ① Video Amp Block ② Communication (TXD/RXD) Block : TTL Level ③ Power Input Block ④ Lpulse (External sync) Block ※ NTSC: 60Hz ± 0.3Hz PAL: 50Hz ± 0.3Hz DSP 3.3 Vp-p EXT_SYN ※ Min. 1msec -9-