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User Manual for Lectrosonics SPNCWB - Wideband Bridging Conference Interface Click to enlarge the picture
Contents of the user manual for the Lectrosonics SPNCWB - Wideband Bridging Conference
- Product category: Audio Conferencing Lectrosonics
- Brand: Lectrosonics
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Lectrosonics Audio Conferencing
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User manual for the Lectrosonics SPNCWB - Wideband Bridging Conference contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Lectrosonics product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Lectrosonics user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Lectrosonics product will considerably shorten its lifespan!
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Product description The SPNCWB from Lectrosonics is a wideband conference interface that makes tele-presence and multi-site bridging simple and effective in any conference room, with full bandwidth audio frequency response and a unique Quad-reference AEC (Audio Echo Canceller).
Each conference connection includes a dedicated AEC for fast and reliable echo cancellation. The AEC converges very fast and will remain converged during double-talk and any signal type, including sine waves, enabled by an advanced DSP algorithm. Cancellation depth increases even with brief signal peaks from the far ends.
The AEC in combination with the proportional gain mixing algorithm provides excellent audio quality without echo heard at the far ends. Signals from the far ends of the conference are routed to the local sound system and to three mixes that are used as reference signals by the AEC. Audio from the local microphones (which includes far end audio delivered by local loudspeakers) is routed to the AEC via another final mix for cancellation of the far end signals. After processing, the output of the AEC is routed back to the far ends through the matrix.
A full complement of audio signal processing is provided for all inputs and outputs. In addition, a proprietary NRF (Noise Reduction Filter) is provided on each input to suppress noise in severe conditions. The NRF employs a proprietary noise reduction algorithm using a 1/3 octave analysis and downward expansion.
The amount of noise reduction applied to the signal at each input is adjustable from 6 dB to 35 dB as needed for the signal conditions and individual preferences. The process is very effective, with almost no audible artifacts up to about 18 dB. Higher values are available for very poor conditions where noise is extremely high and intelligibility is improved at the expense of artifacts in the audio.
A two channel power amplifier is included for loudspeakers in the local sound system. The power amplifier is driven by final mix outputs from the matrix and has a full set of signal processing, including delay, parametric EQ, compressor and limiter. Class-D amplification with a late generation component provides efficiency, low heat and excellent audio performance. The amplifiers cannot be damaged by wiring errors or unusual loads. The processor interconnects with other ASPEN processors via the 1Gbp bus built into all models. - Quad-reference wideband acoustic echo canceller supporting 3-way bridging
- Two maximum speed grade, 4th generation SHARC processors
- TCP/IP Ethernet addressable
- Fully integrated with ASPEN digital matrix
- Adaptive proportional gain automatic mixing at the matrix cross-points
- Third octave noise filter on each channel
- Sigma-Delta class-D audio power amplifiers
In the Box Lectrosonics SPNCWB - Wideband Bridging Conference Interface AC Power Cable Three (3) Year Limited Warranty Table of Contents
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Technical parametersLectrosonics SPNCWB Specs | Echo Cancellation | Acoustic Echo Canceller: 128 ms tail time - will never diverge, regardless of signal type (i.e. sine wave)
Line Echo Canceller: 48 ms tail time
Telephone Hybrid Return Loss: 26 dB + line echo canceller = 45 dB | | Audio Inputs | Codec: 1 x 5-pin Phoenix
Input Impedance: 15kΩ (differential); 375kΩ (common)
Gain: -20 dB to +20 dB, programmable in 1 dB steps | | Audio Outputs | Codec: 1 x 5-pin Phoenix, floating balanced
Output Impedance: 50Ω
Nominal Level: 0 dBu
Headphone: 1 x 1/4" TRS (front panel)
Amplifier Output: 1 x 5-pin Phoenix | | Other Connectors | 1 x USB Type B (front panel)
2 x RJ-11 Telephone Set/Line
2 x RJ-45 Remote Control
2 x RJ-45 ASPEN Port
2 x DB-25 Programmable Logic
1 x RJ-45 Ethernet
1 x DB-9 RS-232 | | Proprietary Network | Physical level: LVDS (Low Voltage DIfferential Signal) high speed
Cable Type: CAT-6
Transmission Speed: 1 Gbps | | Control Input | Number of Inputs: 15
Analog Voltage Range: 0-5V
Logic Input: TTL, LVTTL, CMOS, LVCMOS | | Control Output | Number of Logic Outputs: 8
Logic Control: Active low
Max Sink Current: 100 mA
Max Supply Voltage: 40V
Supply Voltage for Control I/O: 5V
Max Current: 750 mA | | Remote Control | Codec 1: Lectrosonics RCWTH4, RJ-45 jack
Telephone: Lectrosonics RCWTH4, RJ-45 jack | | Power Requirements | 100~240VAC, 50/60 Hz
15W power consumption | | Dimensions (WxDxH) | 19 x 7.25 x 1.72" (483 x 184 x 44 mm) | | Weight | 3.6 lb (1.6 kg) | | | | Package Weight | 9.0 lb | | Box Dimensions (LxWxH) | 24.0 x 14.6 x 6.6" |
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