Leader LT 4448, Instruction Manual, Page: 14 / 74

2. SPECIFICATIONS
7
2.3.4 Input Signals
Setting Method Select the input signal type for each channel
with DIP switches or external control.
Ch1 and 2 NTSC black burst signal
PAL black burst signal
HD tri-level sync signal
SD-SDI signal (270 Mb/s)
HD-SDI signal (1.485 Gb/s)
3G-SDI signal (2.97 Gb/s)
Ch3 to 8 NTSC black burst signal
PAL black burst signal
HD tri-level sync signal
Ch9 and 10 AES/EBU Digital Audio Signal
Ch11 Word-clock Signal (TTL)
LTC LTC Signal
2.3.5 Signal Switching
Switching Method
Ch1 and 2 Relays
Ch3 to 11, LTC Electrical switches
Switch Time of the Relay (*1)
Ch1 and 2 2 ms or less
High-speed Switch Time
Ch3 to 11, LTC 100 ns or less
Switch Time due to Fault Detection
Ch1, 2 and LTC 70 ms or less
Ch3 to 8
High-Speed Detection 1.5 H or less
Low-Speed Detection 60 ms or less
Ch9 and 10
High-Speed Detection 6 us or less
Low-Speed Detection 60 ms or less
Ch11
High-Speed Detection 60 us or less
Low-Speed Detection 60 ms or less
*1 This is the time it takes for the signal to stabilize after the relay is switched.