Specifications

LT-441D
TEST EQUIPMENT
526
LEADER
LT-440D HDTV Signal Generator
The LT 440D fills the need for a precision source of test signals at
1125/59.94 scan rates. It provides three Serial Digital outputs with
embedded Digital Audio and includes a separate AES/EBU digital
audio feed. Analog outputs include Tri-Level Composite Sync, as well as
horizontal and vertical drive. The unit genlocks to Composite Tri-Level
Sync or Blackburst and provides timing adjustment of ±100 lines
(menu-selected), with fine adjustment to ±1 ps. Full EDH facilities are
provided. Test signals include 100% and 75% Color Bars, a Flat Red
Field, 100% and 50% Flat White Field, Line Sweep, Multiburst,
Timing Signal, Ramp, Shallow Ramp, 10-Step Staircase, Pulse and Bar
and the pathological Check Field. Other patterns include Red Field and Crosshatch. Modification to 1125/60 is available as an option.
■ 1035 or 1080 Lines Displayed, Switchable
■ Embedded and Separate AES/EBU
Digital Audio
■ 8 Channels of Embedded Audio, 2 separate
■ Digital Genlock with ± 100 line
Advance/Delay
■ Analog Tri-Level Sync, H and V Drive
Outputs
■ 20-Character Programmable Source ID
Equipment Leasing Available
Multi-Format (14 Systems) HDTV Digital Generator
The LT-441D meets the SDI test signal needs for fourteen formats
based on 720, 1035 and 1080 lines displayed. These include the newer
formats that employ variations of the 24 SF systems. Three SDI out-
puts are provided plus analog tri-level sync, H and V drive. Features
include eight channels of embedded AES/EBU digital audio for the
most popular formats. Six channels of AES/EBU digital audio are sup-
plied separately in signal pairs on three BNC connectors. Digital genlock locks to tri-level sync from HDTV reference or black burst from 525
line timing references. Provision is made for selectable advance/delay to ±100 lines.Two clock references accommodate 60/30 and 59.94/29.97
and other frame rates. Colorimetry (Y formulation) is selected automatically to match the system selected. The generator also supports applica-
ble error-detection systems. Test signals include a new 16 x 9 monoscope pattern, the pathological check field, and two dynamic systems to pro-
vide the means to check the effects of concatenated compression. These employ a moving target whose direction and speed may be controlled
and a menu controlled sequence of selected test patterns with controlled dwell times. A 20-character programmable source ID is also provided.
■ Monoscope Pattern for all Formats
■ Three SDI Outputs
■ 20 Character Source ID
■ Clock Stability 1 ppm/Year or Less
■ Genlock Range ±100 Line Advance/Delay
■ Analog Tri-Level Sync Plus H & V Drives
■ Pathological Checkfield and Moving Marker
■ Digital Genlock to Tri-Level Sync or NTSC/PAL Black
Burst
■ 8 Channels of Embedded + 6 Channel AES/EBU Audio
Output
Reference Total Total
SMPTE System Samples Lines per Embedded
Standard Nomenclature Per Line Frame Audio
1920x1035/60/2:1 2200 1125 Yes
260M
1920x1035/59.94/2:1 2200 1125 Yes
1920x1080/60/2:1 2200 1125 Yes
1920x1080/59.94/2:1 2200 1125 Yes
1920x1080/50/2:1 2610 1125
1920x1080/30/1:1 2200 1125 Yes
1920x1080/29.97/1:1 2200 1125
274M
1920x1080/25/1:1 2640 1125
1920x1080/24/1:1 2750 1125
1920x1080/23.98/1:1 2750 1125
1920x1080/24 sF 2750 1125
1920x1080/23.98 sF 2750 1125
296M
1280x720/60/1:1 1650 750
1280x720/59.94/1:1 1650 750