Genlock Function

The Leader Instruments LT4670 is capable of genlocking, which is a feature that synchronizes multiple video and audio recording devices so that video/audio output can be seamlessly switched without any artifacts. This unit takes NTSC/PAL black burst signals and HDTV tri-level sync signals, which are analog video sync signals, and synchronizes them to each output signal. NTSC/PAL black burst signals with field reference pulse and NTSC black burst signals with 10-field ID are also supported. This unit also supports 10 MHz CW lock as standard.

Stay-in-Sync and Slow Lock Functions

This unit features a stay-in-sync function in case of abnormalities in the genlock input. In addition, a slow-lock function is provided to reduce the shock that occurs when the genlock is performed again after a stay-in-sync, thus realizing an extremely stable synchronization system. The system supports BB, tri-level, 10 MHz CW, GNSS (SER01), and PTP (SER03).

Word Clock Signal Output

One 48 kHz word clock signal synchronized with the video signal can be output.

AES/EBU Signal Output

One AES/EBU signal with tone and one muted AES/EBU signal can be output.

CW or 1PPS Output

This unit features a selectable 10MHz CW or 1PPS output.

Time Code Output

Based on internal time information, NTP server, LTC (LTC terminal input), VITC (SER02), GNSS (SER01), and PTP (SER03) time information, output to 3 LTC (LTC terminal) systems, multiplex analog sync signal to VITC, and SDI (SER02/SER04) output to ATC (SER02/SER04) output can be multiplexed to ATC (LTC/VITC).

LTC Input/Output

LTC can output three independent systems for each input. The outputs can be set for frame rate and offset time relative to the reference time, respectively.

GPIO Pin

Preset recall and alarm contacts can be output.

Synchronous Control Between Devices (L-SYNC)

In a redundant system, time can be synchronized by using L-SYNC to connect the main and backup devices synchronized by the same analog video sync signal. Synchronized time outputs are PTP (SER03), LTC, black signal (VITC), SDI signal ATC (VITC/LTC) (SER02/04), AES/EBU signal, and NTP.

Real-Time Clock

The real-time clock is backed up by a battery. There is no need to reset the date and time when the power is turned on and off.

Ethernet

The instrument can be controlled via HTTPS/HTTP and a REST-API as well as with SNMP. This instrument can connect to a NTP server to set the internal clock time, or operate as an NTP server.

Preset and Memory Functions

The last memory, which maintains the last setting when the power is turned off, and up to 10 presets can be stored internally. For operational convenience, registered presets can be recalled to always start up with the same settings.

External Memory Support

Logs can be saved and preset data can be written and saved using an USB memory stick from the front panel.

Logging

The operational status of the instrument can be logged to internal or external memory.

Last Memory Recall

When the power is turned on, the system starts up with the panel settings from the previous power down.

Redundant Power Supply, Non-Stop Power Supply, and Fan Replacement

The LT4670SER11 Redundant Power Supply (not included) can be added for redundant operation. The power supply unit and fans are hot-swappable.

Web Browser

By connecting the LT4670 to a PC, settings and monitoring can be performed via a web browser.