2. SPECIFICATIONS
5
Maximum Input Voltage
Channels 1 to 3
±5 V
Channels 4 to 10
±1.5 V
Channel 11
0 V or +5 V (when receiving TTL word-clock
signals)
2.3.3
Types of Input Signals
Channels 1 to 3
HD-SDI signal (1.485 Gb/s)
SD-SDI signal (270 Mb/s)
SD-SDI signal (143 Mb/s)
Tri-level sync signal
NTSC/PAL analog black burst signal
Channels 4 to 8
Tri-level sync signal
NTSC/PAL analog black burst signal
Channels 9 and 10
AES/EBU digital audio signal
Channel 11
Word-clock signal (TTL)
2.3.4 Signal
Switching
Switching Method
Channels 1 to 3
Relay
Channels 4 to 11
Electrical switches
Switch Time
Manual Switching
Time required to switch the output signal after
you use the front-panel SYNC SOURCE key to
change it
Channels 1 to 3
10 ms or less
Channels 4 to 11
100 ns or less
Automatic Switching
Time until the LT 4441/4442 switches to a
backup signal after the primary signal is
interrupted
Channels 1 to 3
70 ms or less
Channels 4 to 8
90
μ
s or less (FAST)
60 ms or less (SLOW)
Channels 9 and 10
6
μ
s or less (FAST)
60 ms or less (SLOW)
Channel 11
60
μ
s or less (FAST)
60 ms or less (SLOW)
