LT4446 – Auto Changeover for the LT4600

Perfect match for the LT4600, the LT4446 provides redundancy for key signals in critical sections of the operation. With its 1RU x 1RU size, this changeover saves space and costs and it’s easy to implement.

LT4446 – Auto Changeover for the LT4600

The LT4446 is a changeover unit that automatically switches the signal from the primary signal to the backup signal when problems are detected in the primary signal.  Two systems of input signals (primary and backup) are connected to the LT4446.  The changeover detects errors in the amplitude of the primary input signal.

A single LT4446 provides 11 channels. These channels can receive SDI, NTSC/PAL black burst, HD  tri-level sync, AES/EBU digital audio, and word-clock signals.  SDI signals are switched with relays; all other signals can be switched with electronic switches.  The power supplies are redundant.  Alarms are generated when errors occur.

 

MAIN FEATURES:

  • I/O Connectors:
    The LT4446 is equipped with 11 sets of I/O connectors (a single set consists of a primary input connector, a backup input connector, and an output connector).
  • Input Switching:
    Relays are used to switch between the primary signals and backup signals of channels 1 to 3.  High speed electronic switches are used to switch between the primary signals and backup signals of channels 4 to 11.
  • Input Signal Selection:
    On channels 1 to 3, you can select SDI signals (3G, HD, SD), NTSC/PAL black burst signals, or HD tri-level sync signals.
    On channels 4 to 8, you can select NTSC/PAL black burst or HD tri-level sync signals.
    Channels 9 and 10 are exclusively for AES/EBU digital audio signals.
    Channel 11 is exclusively for word-clock signals.  It also receives TTL signals.
  • Faulty Detection:
    When an input signal level error is detected, the LT4446 lights the panel fault LED as well as the panel LED that indicates the channel that is causing the problem.  This feature allows quick investigation of the problem.
    Channels 4 to 11 are equipped with high-speed fault detection circuits.  These enable the LT4446 to switch to a backup signal with barely any disturbances shown on the screen when problems, such as interruptions, occur in the primary signal.
  • Alarm Detection:
    If an error is detected at an output connector of channels 4 to 11 or at the power supply, a panel LED indicating where the error occurred lights up to alert the user.
  • Power Supply Start Time:
    A delay for starting the fault detection at power up can be set to approximately 1 minute or approximately 4 minutes, depending on the rise time of the system signal source that the LT4446 is connected to.
  • SNMP v1 Ready:
    Error monitoring over an Ethernet network is possible.  Traps are issued for error detection, panel control, and remote control.  In addition, the error details and DIP switch settings (except for the user-defined fault detection level) can be read as status information.  IP address configuration software is included.
  • Redundant Power Supply:
    Redundant power supply provides extra reliability.  Alarms are generated when an error occurs.

 

 

LT4446 Changeover Data Sheet

 

2-YEAR STANDARD WARRANTY

Leader Instruments Corporation warrants its products to be free from defects in materials and workmanship for a period of two years from the date of purchase.

Leader’s obligation under this warranty is limited to repairing or replacing, at its sole option, any such defective product. Product must be returned to a Leader Service Center with transportation charges prepaid and must be accompanied by a brief description of the problem encountered and date and place of purchase. This warranty does not apply to equipment, which has been damaged by accident, negligence, and misapplication, altered or modified in any way.

LEADER EXPRESSLY DISCLAIMS AND EXCLUDES ALL OTHER WARRANTIES, EXPRESSLY IMPLIED AND STATUTORY, INCLUDING WITHOUT LIMITATION, THE WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

LEADER EXPRESSLY DISCLAIMS AND EXCLUDES ALL LIABILITY FOR INCIDENTAL AND CONSEQUENTIAL DAMAGES.

 

EXTENDED WARRANTY

In addition, we offer extended warranty coverage for an additional year (3-year extended warranty) or three years (5-year extended warranty). For your peace of mind, we highly suggest considering any of these extended warranties as soon as possible (and before the end of the standard warranty period) because, in some cases, the cost to repair your instrument could be up to 50% of the original purchase value. If interested in any of these extended warranties, please contact your LEADER authorized representative or visit our Warranty Page for details and pricing (within 30 days of original purchase).

View Warranty Info

 

IMPORTANT NOTE:
Damage caused due to negligence or accident is not covered by Leader’s Warranties. LCD Display, CRT and transformer parts costs are not covered by the Extended Warranty. There is no Extended Warranty available for accessories.