353. Setup3-5. Setting the sync signalsThe sync signals to be used by the system can be selected.External sync: For synchronization with an external sync signal (gen-lock). The reference input signal islooped through and output.BBST: Black burst signal (vertical phase of 0H)BBAD: Black burst signalThis can be selected when HD format signals are supplied.( Vertical phase of 90H when the 59.94i or 59.94p format is selected;vertical phase of 75H when the 50i or 50p format is selected)TRI: Tri-level sync signal (vertical phase of 0H)This can be selected when HD format signals are supplied.Internal sync: For synchronization with an internal reference signal (INT). The REFOUT signal (black burstsignal) is output from the two reference connectors.1 Press the [FUNC] switch to light its indicator, and then press the [SETUP] switch to display the SETUPmenu.2 Turn [F1] to display the REF menu.3 Turn [F], select the sync signal using the SYNC item, and press the [F4] switch (EXEC) to enter theselection.An asterisk ( ) appears at the left of the reference signal currently selected.BBADTRIINTREF5/15 SYNCBBST GL EXEC-An asterisk ( ) appears at the GL item when operation is synchronized with the external or internal syncsignals.A dash (–) appears at the GL item when operation is not synchronized with the external or internal syncsignals.