LT4610 – 3G/HD/SD Multi-Format Video Sync Generator

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This NEW multiformat video generator is a step up from our LT4400, allowing 3G-SDI signals to be used in addition to the previous HD-SDI and SD-SDI.  And with LIP SYNC function included as standard!

LT4610 – Multi-Format Video Sync Generator

Designed for use in broadcast studios, mobile production vehicles, post-production companies and broadcast equipment maintenance facilities, the LT4610 provides an exceptionally wide range of capabilities within a compact 1RU x 15.75 inches (400 mm) deep footprint.

Test patterns available from the LT4610 include 100% and 75% color bars, multi-format color bars and SDI check fields with user-selectable scrolling in eight combinations of up/down/left/right. Scrolling speed is user adjustable. Y/G, Cb/B, Cr/R components can be turned on or off independently for each output channel.


  • QVGA (320 pixel x 240 line) 24-bit full color bitmap logos can be transferred into the generator via USB memory and added to any test pattern.
  • LT4610 can also generate IDs of up to 20 characters for placement at any operator-assigned screen position. ID size is selectable between 32 x 32, 64 x 64, 128 x 128 and 256 x 256 pixel sizes at 100% or 75% intensity, continuous or blinking. IDs can be scrolled to the left or right.
  • Safety area markers can be generated to show safe-action area (90%), safe title area (80%) and/or 4:3 aspect ratio. ID characters, logo mark, safe area markers and test pattern can be displayed individually, sequentially or simultaneously.
  • Audio test generation capabilities include silence, 400 Hz, 800 Hz, and 1 kHz at -60 to 0 dBFS in 1dBFS steps, assignable across up to 16 channels for 3G-A/HD/SD and 32 channels for 3G-B. Audio sampling resolution can be selected from 20 or 24 bit at 48 kHz and synchronized with the video signal. Audio clicks can be generated between 1 and 4 seconds or disabled.
  • Test patterns with synchronized audio can be generated for lip sync testing. The audio click setting is disabled in this mode. SDI output 1 is synchronized to the AES/EBU output. When using Leader’s LV5770A waveform monitor you can accurately measure the lip sync of SDI video and audio signals.
  • LT4610 has a genlock input and can be synchronized with NTSC/PAL black burst or HD tri-level sync signals. Six independent analog black burst reference signals are provided, which can be changed to tri-level sync. A 48 kHz word clock output and 48 kHz AES/EBU output are also provided for synchronizing audio signals.
  • Standard support for SNMP via Ethernet makes it easy to integrate the LT4610 into a network environment. Alarms are generated with SNMP and displayed on the front panel when errors do occur.
  • Redundant power supply with fast automatic switchover is standard.