Leader LT4670 - 3 Specifications; General; Features; Lt4670

3 SPECIFICATIONS
5
3 SPECIFICATIONS
3.1 General
The LT4670 is a 1U full-rack size sync signal generator that outputs analog video sync signals
and audio word-clock signals. The genlock function allows operation synchronized with input
signals.
The genlock function has a stay-in-sync function that maintains the phase when an error occurs
in the input analog video sync signal. Adding the power option provides redundant operation.
The power supply unit and fan can be replaced without turning off the power of the LT4670
main unit. These features make it possible to configure a highly reliable system.
The LT4670 has six independent standard outputs of the analog sync signal output, digital audio
output, word-clock output, and LTC I/O. Also, options are available for GNSS and PTP
synchronization, arbitrary pattern output using 3G-SDI (4K Quad), HD-SDI, and SD-SDI, etc.
These options are designed to enable the management of the optimal synchronization system
for your application.
3.2 Features
3.2.1 LT4670
Genlock Function
Various output signals can be synchronized by applying NTSC/PAL black burst signals, which are
analog video sync signals, and HDTV tri-level sync signals.
NTSC/PAL black burst signal with field reference pulse and NTSC black burst signal with 10 field
IDs are also supported.
The 10 MHz CW lock is also supported as a standard feature.
Stay-in-Sync and Slow Lock Functions
A stay-in-sync function is available in case errors occur at the genlock input. In addition, a slow
lock function is available to reduce the shock that occurs when genlock is performed again
based on stay-in-sync. This makes it possible to construct an extremely reliable synchronization
system.
Analog Video Sync Signal Output
Six analog video sync signals can be output. The phase of each output can be adjusted
independently.
NTSC/PAL black burst signal with field reference pulse and NTSC black burst signal with 10 field
IDs are also supported.
Word-Clock Signal Output
The LT4670 can output a 48 kHz word-clock signal synchronized with video signals.