Instruction manual
2-1
2 SPECIFICATIONS
2.1 General
The 1U half-rack sized compact LT 4400 Multiformat Video Generator applicable to both
HD-SDI and SD-SDI systems outputs SDI video signals.
The various output capabilities are provided: color bar, SDI check field test pattern, ID
characters, logomark in QVGA size(*1), safety-area marker, superimposing embedded
audio, genlock mode to synchronize external reference signal, and three independent
analog black signal systems.
*1 Up to 1920 dots x 1080 lines can be displayed when the Option (LT 4400-70) is
installed
.
2.2 Features
● Applicable to both HD-SDI and SD-SDI systems
Applicable to both HDTV (18 types of HDTV formats) and SDTV (525i/59.94,
625i/50) systems. The HDTV or SDTV can be selected.
● Superimposing ID characters
The ID characters can be superimposed at the arbitrary position on the screen. The
character blinks to indicate the freeze status.
● Superimposing logomark
The logomark up to 320 dots x 240 lines in QVGA size(*1) can be superimposed at
the arbitrary position on the screen. The logomark is converted from the bit map to
four-grade monochrome data.
● Safety-area marker
The 90 % and 80 % safety-area markers can be superimposed on the screen.
The 4:3 aspect-ratio marker can also be superimposed in HDTV format.
● Superimposing embedded audio
The 16 channels of embedded audio signals (4 channels x 4 groups) can be
superimposed. The frequency and level can be respectively set to each channel.
● Genlock mode
This instrument can be locked by the NTSC/PAL black burst signals and HDTV
tri-level sync signal for variable the timing. The NTSC/PAL black burst signals with
field reference pulse signal, and NTSC/PAL black burst signal with 10-field ID are
also applicable.
● Stay-in sync function
This function ensures the stable operation in genlock mode even when the external
reference signal is accidentally intermitted.
● Analog black signal output
Three independent analog black signal output systems are provided. The black
burst signal with the same format as the SDI output, or HDTV tri-level sync signal
with the same format of clock frequency can be selected for variable the timing. The
NTSC/PAL black burst signals with field reference pulse signal, and NTSC black
burst signal with 10-field ID are also applicable.
● Pattern scroll (Simple motion picture mode)
The simple motion picture mode is provided to scroll the pattern.
● Word clock output
The 48 kHz word clock output is provided to synchronize the audio signal.