Leader LT4670 Instructions Manual

Summary
The LT4670 is a 1U rack-sized synchronization and test signal generator that can be configured to output PTP, GNSS, (4K/HD) IP,
4K 12G, (3G/HD/SD) SDI, analog sync signals, AES/EBU, audio word clock and LTC synchronized to analog video sync signals.
The LT4670 offers customers unmatched flexibility, reliability, and redundancy with a full range of options.
Six independent analog sync signal outputs, digital audio output, word clock output, LTC input/output, and L-SYNC are provided as
standard. Options for GNSS sync, PTP, 4K IP, HD IP, 4K 12G-SDI, 4K Quad, 3G-SDI, HD-SDI, and SD-SDI allow customization to
match the needs of any audio or video system. The LT4670 can operate as a PTP grandmaster and provide two independent leader
and follower engines.
Features & Standards
LT4670 Base Configuration
Genlock
NTSC/PAL black burst and HD tri-level sync can be input to synchronize each
output signal. NTSC/PAL black burst with field reference pulse and NTSC black
burst signals with 10-field ID are also supported, as well as 10 MHz CW lock.
Stay-in-sink and slow lock
A "stay-in-sync" algorithm is used in case of abnormalities in the genlock input.
This is paired with "slow lock," which reduces the shock that occurs when
external genlock returns, delivering an extremely stable synchronization system.
The system supports BB, tri-level, 10 MHz CW, GNSS (SER01), and PTP
(SER03).
Analog video sync signal output
Six analog video sync signal outputs are available. Each output has
independently variable phase. NTSC/PAL black burst signals with field reference
pulse and NTSC black burst signals with 10 field IDs are also supported.
Word clock signal output
A 48 kHz word clock signal synchronized with the video signal is standard.
AES/EBU signal output
One AES/EBU signal output (AES/EBU terminal) with a sampling frequency of
48 kHz synchronized with the video signal is provided. In addition, there is one
AES/EBU signal output (SILENCE terminal) that is DARS compatible.
CW/1PPS output
A selectable CW/1PPS output is available.
Time code input/output
In addition to free-running based on internal time information,
the timecode generator can output to three LTC systems based on time
information from an NTP server, LTC, VITC, GNSS (SER01), and PTP (SER03),
multiplex to VITC for analog video sync signal output, and multiplex to ATC
(LTC/VITC) for SDI (SER02/SER04)
PTP
GNSS
GENLOCK
4K
IP TSG 12G
LT4670
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
Supports recall of presets and output of up to two alarms.
Synchronous control between devices (L-SYNC)
In a redundant system, time can be synchronized by using L-SYNC to connect
the main and backup LT4670, 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 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. Can connect to an NTP server to set the internal clock time, or
operate as an NTP server.
Preset memory
Up to 10 presets can be stored internally. Registered presets can be
conveniently recalled for operation and always start up with the same settings.
External memory support
Logs can be saved and preset data can be written and saved using a USB
memory stick from the front panel.
Logging
Operational status 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.
1
B.B. WC
Tri-level
3G HD SD
SDI SDI SDI
SYNC AND TEST
GENERATOR
AES-EBU
TC
SDI