Live chat by BoldChat
Our agents are available:
9:00 AM - 6:00 PM EST
Leader LT 428 Digital Sync Generator
   Search: HACKER SAFE certified sites prevent over 99.9% of hacker crime.
   

   
   



Leader LT 428 Digital Sync Generator


The LT 428 is a compact signal generator of half rack size. It is equipped with 3 independent black burst outputs, which facilitates the synchronization of digital devices that have different phases.
     Features:
  • 3 Black Burst Outputs
    Equipped with 3 independent black burst outputs, each of which the phase can be varied.
  • Genlock
    Able to synchronize to the NTSC or PAL video signals, black burst, and composite sync, and vary the timing.
  • SDI Output
    Equipped with one system of component serial digital output conforming to SMPTE 259M.
  • Analog Composite Output
    Equipped with one system of analog composite output.
  • Digital Audio Output
    Equipped with one system of 2-channel digital sound output conforming to AES/EBU.
  • Analog Audio Output
    Equipped with stereo sound output (The sound is output by switching with the digital sound).
  • Word Clock Output
    Equipped with one system of 44.1 kHz or 48 kHz word clock.
  • Half Rack Size
    1U half rack size achieves efficient use of space, convenient for system integration.
  • Setup Using a PC
    Since setting changes such as varying the phase of the black burst signal, genlock timing, video output pattern, and audio frequency are carried out from a PC via the RS-232C, errors in operation can be prevented.


Model Description List Price Sale Price
LT428 Component Digital Sync Generator - Discontinued - replaced by Leader LT4400


     Specifications:

Master Frequency Reference TCXO
Temperature drift   ±2.5 ppm (0 to 50°C, ref. 25°C)
Aging   ±1 ppm/year
Remote Control
Input Interface   RS-232 port, 9 pole D-sub, male
Protocol   SCPI based
Baud rate   9600 bps
Analog GENLOCK
Input   75Ω looped through
Return loss   >36 dB, to 6 MHz
GENLOCK Signal
(NTSC or PAL)
Amplitude: Nominally ±3 dB
S/N ratio: >26 dB
Input SCH phase: Nominally ±45°
Pull-in range fsc: ±50 Hz
Timing facilities   Timing range
    PAL:   ±4 fields
    NTSC: ±2 fields
Analog Black Burst Outputs
Connector   BNC
Output impedance   75Ω
Return loss   >36 dB, to 5 MHz
Sync amplitude   PAL:   -300 mV ±5 %
  NTSC: -286 mV ±5 %
Burst amplitude   PAL:   300 mV ±5 %
  NTSC: 286 mV ±5 %
Timing range   PAL:   ±4 fields
  NTSC: ±2 fields
SCH phase   Adjustment ±180°
Test Signal Generator
SDI output
Connector: BNC
Output impedance: 75Ω
Format: 270 Mb/s serial, complies with ITU-R BT 656 and SMPTE 259 M
Return loss: >15 dB, 5 to 270 MHz
Timing range: PAL:   ±1 field
NTSC: ±1 field
Embedded Audio: 1 kHz stereo, silence and Off
VIDEO output
A color phasing of the output is unlocked to the Black Burst outputs.
Connector: BNC
Output impedance: 75Ω
Return loss: >36 dB, to 5 MHz
Sync amplitude   PAL:   -300 mV ±5 %
  NTSC: -286 mV ±5 %
Burst amplitude   PAL:   300 mV ±5 %
  NTSC: 286 mV ±5 %
Video Accuracy: Nominal ±2 %
Timing range: PAL:   ±1 field
NTSC: ±1 field
SCH phase: Adjustment ±180°
S/N ratio: 50 dB unweighted to 5 MHz
Common Test Signals, SDI and Analog Generator
All signals in standard 4x3 aspect ratio.
Patterns dedicated for PAL: EBU Color Bar
75 % Color Bar + red
CCIR Line 18
Patterns dedicated for NTSC: SMPTE Color Bar
FCC Color Bar
Patterns common for NTSC/PAL:
Color Bar ITU801
Color Bar 100%
75% Red
Crosshatch
PLUGE
SDI Check Field
Digital Grey
Staircase 5 step
Staircase 10 step
15 kHz Bl/Wh
White 100%
Black
Window 10%
Window 15%
Window 20%
Window 100%
AES/EBU Audio Generator (Serial digital audio generator with test tones.)
Connector   XLR
Output format   Balanced 110Ω According to AES3 1992
Amplitude   3 Vp-p Typically
Data bitrate   3.072 Mbps
Coding   Linear, 20-bits two's complement binary biphase mark
Pre-emphasis   None
Timing   +10.4 µs to -9.6 µs in 0.8 µs steps
AES/EBU Output signals
Tones: Stereo 500 Hz
Stereo 1 kHz
Stereo EBU 1 kHz, single click in ch. A
Stereo 8 kHz
Click rate: 1 or 3 s
Levels:
Silence
0 dBFS
-9 dBFS
-12 dBFS
-15 dBFS
-16 dBFS
-18 dBFS
-20 dBFS
Wordclock (WCLK) Generator
Connector   BNC
Output impedance   75Ω
Output characteristics   HC-MOS clock, 0 to 5V un-terminated
Reference output
44.1 or 48 kHz

The 48 kHz is both frequency and phase locked to the video. The 44.1kHz is the CD audio sample frequency and frequency locked to the video frequency.
Analog Audio Generator
Connector   XLR
Output format   Balanced 30Ω
  Balanced by active circuitry.
Reference amplitude   0 ±0.8 dBu, corresponding to 775mV
Analog audio output signals
Tones: Stereo 500 Hz
Stereo 1 kHz
Stereo EBU 1 kHz, single click in ch. A
Stereo 8 kHz
Click rate: 1 or 3 s
Levels:
+10 dBu
+8 dBu
+7 dBu
+6 dBu
+5 dBu
+4 dBu
+3 dBu
+2 dBu
+1 dBu
0 dBu
-1 dBu
-2 dBu
-3 dBu
-4 dBu
-5 dBu
-6 dBu
-7 dBu
-8 dBu
-9 dBu
-10 dBu
-11 dBu
-12 dBu
-13 dBu
-15 dBu
-18 dBu
-20 dBu
-24 dBu
-27 dBu
-30 dBu
-33 dBu
-36 dBu
Silence
(0 dBu=775 mV)
Presets
Four preset set-ups can be stored in the unit. Besides essential data for the individual Presets all user accessible parameters for the outputs are included and stored in non-volatile memory.

The Presets are named Preset 1 to 4 in the unit.
In the PC Remote Control each preset is identified by:
  •Name (24 characters, no space)
  •Author
  •Date of modification

The preset name is displayed in the Preset Status box in the System Status window, when the preset is active.
The front panel LEDs using the hidden Preset button also displays preset status.
See operation instructions.
Environmental Conditions
Regulations and Standards   EN 55103-1 (emissions)
  EN 55103-2 (immunity)
Climatic Conditions   Temperature range
    Ambient operating: +5°C to +40°C
    Humidity: Non condensing (IEC 721)
Power Supply
Voltage   90 to 250 VAC
Frequency   47 to 63 Hz
Power consumption   25 W max.
Mechanical Data (Dimensions & Weight)
Mechanical data for cabinet   217 mm(W) × 42 mm(H) × 380 mm(D), 1.5 kg
Mechanical data for cabinet fitted with 19" rack mount   442 mm(W) × 44 mm(H) × 380 mm(D), 2.3 kg
Mechanical data for two cabinets side by side, fitted with 19" rack mount   442 mm(W) × 44 mm(H) × 380 mm(D), 3.8 kg
Accessories
Mains cable   1
Interface cable   1
Rack Mount Kit   1
CD-ROM   1



  Selection Guide

Signal Generators LT443D *1 LT4400 LT428 LT448
Format Multi Format Yes Yes Yes Yes
HD-SDI HD/HDB Yes    
SD-SDI SD/SDB Yes Yes  
DVI-D       Yes
YPBPR/GBR       Yes
525/625 progressive CS     Yes
Y/C NTSC/PAL       Yes
Composite NTSC/PAL CS   Yes Yes
Computer Monitor       VGA-SXGA
Analog Output Yes Yes   Yes
Serial Digital Output Yes Yes Yes  
Embedded Audio Yes Yes Yes  
AES/EBU Digital Audio Yes   Yes  
Audio Word Clock DA   Yes  
Analog Audio AA   Yes Yes
Genlock GLA Yes Yes  
Digital Black SDB/HDB      
Digital Black + Embedded Audio SDB/HDB      
Analog Tri-Level Sync GLA/BL Yes   Yes
Black Burst GLA/BL Yes BB BB/Tri
Monoscope Pattern Yes     Yes
ID 20 Character/Blinking Yes/Yes Yes    
Pattern Step Yes     Yes
Pattern Scroll/Moving Target Scroll Yes   SP/OP
Check Field (SMPTE RP 198) Scroll Yes    
EDH Codes (SMPTE RP 165) Yes      
Presets Yes 10 4 100
Natural Picture OP     SP/OP
Universal AC Power Supply Yes DC12V Yes Yes
    * 1 : LT443D is modular so functions are determined by installed modules.
    OP : Option
    SP : Special Order



   
  Welcome | Companies | Search by Type | How To Order | Leasing | About Us  
  Tequipment.NET
205 Westwood Ave
Long Branch, NJ 07740
For our Electronic Whiteboard division visit www.touchboards.com
BBBOnline Reliability Seal. Tequipment.NET
Phone: 1-877-742-TEST (8378) / 732-222-7077
Fax: (732) 222-7088
E-mail: salesteam@Tequipment.NET