Leader LT 4441 Signal Changeover Unit
- Price: $6,494.95
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The Leader LT 4441 Signal Changeover Unit switches signals from primary to backup in case of errors in the amplitude of the primary input signal. The unit provides 11 channels, each channel consisting of a primary input, a backup input, and an output.
Depending on the configuration of the internal switches, the channels receive SDI, analog black burst, tri-level sync, AES/EBU digital audio, and word-clock signals. The unit uses relays for switching channels between 1 and 3 while the electronic switches are used to switch channels between 4 and 11. Equipped with high-speed detection circuits, the channels between 4 and 11 offer error-free switching of signals.
Channel 9 and 10 inputs are dedicated inputs for AES/EBU digital audio signals. Channel 11 input is a dedicated input for word-clock signals, receives TTL signals, and transmits +5 V CMOS signals.
On signal interruption, the LT 4441 Signal Changeover Unit switches the control to a signal (primary or secondary) with least glitches. The LED panel indicates the channel with error in signal. Depending on the rise time of the system signal source connected to the unit, you can schedule the start of error-monitoring at power up by setting the status of the unit as fast or slow. When used in combination with LT 443D signal generator, the LT 4441 Changeover Unit can be mounted in 3 U space.
- Switches signals from primary to secondary in case of errors in the amplitude of the primary input signal
- Provides 11 channels - with each channel consisting of a primary input, a backup input, and an output
- Receive SDI, analog black burst, tri-level sync, AES/EBU digital audio, and word-clock signals (depending on the configuration of the internal switches)
- Uses relays for switching channels between 1 and 3 while the electronic switches are used to switch channels between 4 and 11
- High-speed detection circuits between channel 4 and 11 ensure error-free switching of signals
- You can switch between the level detection of SDI, NTSC or PAL analog black burst, and HD analog tri-level sync signals (by using the internal preset switches)
- Channel 9 and 10 inputs are dedicated inputs for AES/EBU digital audio signals
- Channel 11 input - dedicated input for word-clock signals; receives TTL signals and transmits +5 V CMOS signals
- AES/EBU digital audio and word-clock signals are received through dedicated connectors.
- Switches the control to a signal (primary or secondary) with least glitches
- LED panel indicates the channel with error in signal
- You can configure the timing of error monitoring as fast or slow depending on the rise time of the system signal source
- Mountable in 3U space when used in combination with LT 443D signal generator
| Input |
Primary Input - 10 input connectors (75 Ω BNC connectors) 1 input connector (TTL input, 75 Ω BNC connector)Backup Input - 10 input connectors (75 Ω BNC connectors) 1 input connector (TTL input, 75 Ω BNC connector) |
| Output |
10 output connectors (75 Ω BNC connectors) 1 output connector (+5 V CMOS output, 75 ΩBNC connector) |
| Return Loss |
Relay Switches (CH1-CH3): 30 dB (0 to 10 MHz) 15 dB (10 to 750 MHz) 10 dB (750 MHz to 1.5 GHz Electronic Switches (CH4-CH10): 30 dB (0 to 10 MHz, internally terminated) Electronic Switches (CH11): TTL input |
| Insertion Loss |
Relay Switches (CH1-CH3): 0.2 dB (0 to 10 MHz) 0.5 dB (10 to 200 MHz) 2.0 dB (200 MHz to 1.5 GHz) Electronic Switches (CH4-CH10): 0.3 dB (0 to 10 MHz) Electronic Switches (CH11): TTL input |
| Crosstalk |
Relay Switches (CH1-CH3): -60 dB (0 to 10 MHz) -30 dB (10 MHz to 1.0 GHz) -20 dB (1.0 to 1.5 GHz) Electronic Switches (CH4-CH10): -55 dB (0 to 10 MHz) -45 dB (10 to 30 MHz) Electronic Switches (CH11): TTL input |
| Switching Voltage |
Relay Switches (CH1-CH3): ±5 V Electronic Switches (CH4-CH10): ±1.5 V Electronic Switches (CH11): -0 V; +5 V for dedicated TTL word-clock input |
| Switching Time |
Relay Switches (CH1-CH3): 10 ms or less Electronic Switches (CH4-CH11): 100 ns or less |
| Signal Type |
Relay Switches (CH1-CH3): HD-SDI (1.485 Gb/s), SD-SDI (270 Mb/s),SD-SDI (143 Mb/s), tri-level sync,NTSC black burst, and PAL black burst Electronic Switches (CH4-CH8): NTSC black burst, PAL black burst, and trilevelsync Electronic Switches (CH9, CH10): AES/EBU Electronic Switches (CH11): Word-clock signal (TTL) |
| Environmental Conditions |
Operating Temperature Range: 0 to 45 °C Operating Humidity Range: 90 %RH or less (no condensation) Operating Environment: Indoors Elevation: Up to 2,000 m Overvoltage Category: II Pollution Degree: 2 |
| Power Requirements |
90 to 250 VAC (no switching necessary) 50/60 Hz |
| Power Consumption | 25 W max |
| Dimensions | 426 × 44 × 560 mm / 16.77 x 1.73 x 22.04" |
| Weight | 4 kg/ 8.81 lb |
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What's in the Box
- 2 x Rack Supports
- 4 x Rack Support Mounting Screws
- Power Cord
- Instruction Manual
- Cover/Inlet Stopper
- 1 - Year Warranty
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