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Linear Acoustic MT2000 Multichannel Bitstream Analyzer

The Linear Acoustic MT2000 Bitstream Analyzer is a portable, handheld diagnostic tool that can monitor and generate Dolby Digital, Dolby Digital Plus, Dolby E, and PCM bitstreams.

With its built-in test-signal generator, the MT2000 allows audio system integrators and service engineers to quickly monitor and check the integrity and composition of Dolby encoded and PCM signals routed through production, broadcast, cable, and satellite facilities, or even a home theater system – a very efficient tool for end-to-end system testing and is the ideal next generation replacement for the original Dolby® DM100 analyzer.

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Product Description

The Linear Acoustic MT2000 accepts signals via AES, TOSLINKTM optical, 3GHz SDI, or HDMI connectors.The unit identifies the format of the selected input signal and activates the appropriate built-in decoder. Pass-through mode permits modification of the AES channel status bits of the input signal before passing it to the outputs. Monitoring capabilities include error detection at the AES3 layer and within the coded audio layers, including SMPTE 337 formatting information and Dolby E guard band position.

In addition to displaying audio signal statistics and metadata, the MT2000 includes ITU-R BS.1770-1/2/3 loudness measurement with selectable Dolby Dialogue IntelligenceTM to support ATSC A/85 and EBU R128. Logging is provided via the USB connector and/or via SNMP over Ethernet.

An extensive set of useful Dolby Digital, Dolby Digital Plus, and Dolby E test bitstreams is stored internally, and users can modify the set in the field via software download.The MT2000 can generate the selected bitstream simultaneously on all output connectors, even while receiving and decoding an input signal.The MT2000 is also capable of generating two-channel PCM signals. In this mode, the user can select the output waveform type (white noise, pink noise, sine, square), amplitude, and frequency.Test signals and analysis are also provided for latency and basic lip sync.

Signals are provided simultaneously via the AES and TOSLINK optical outputs and can be re-embedded into any of the SDI pairs. Output can be the original input signal, a multichannel PCM decoded version of the input signal, test signals, or, in the case of the SDI output, a combination of all of these. Inputs can be used as sources for embedding even if not used for decoding thus channel shuffling can be easily accomplished.

A bright yellow OLED display and integrated rotary navigation cluster provide straightforward menu navigation and function adjustment. A standard 1/8-inch stereo headphone jack can be switched to monitor any two decoded channels or a downmix of the whole program. Digitally amplified stereo speakers provide a surprisingly loud output useful for quick checks and for emulating sound systems found in portable devices.

The MT2000 is powered by an internal NiMH rechargeable battery pack or from its DC power port via an included universal power supply. It ships with a soft carrying case and multiple adapters.

Linear Acoustic MT2000 Specifications

Audio Formats: Dolby Digital, Dolby Digital Plus, and Dolby E inputs and outputs of test bitstreams; Stereo (AES/TOSLINK optical) and multichannel PCM (SDI and HDMI) input; Live generation of PCM waveforms such as white noise, pink noise, sine, and square waves, latency test signal, A/V sync test pulse (for beep/flash)
Metering: ITU-R BS.1770 loudness measurement with Dolby Dialogue Intelligence; Error detection at the AES3 layer and within the coded audio layers, including SMPTE 337 formatting information and Dolby E guard band position
AES and MADI I/O: All connectors are 75-Ohm BNC female; Main inputs with 75-Ohm internal termination; Signal levels per SMPTE 276M/AES-3ID-2001. Compatible with consumer S/PDIF connections. AES I/O connectors also serve as I/O for MADI
HD/SD-SDI I/O Auto-sensing 3GHz HD/SD-SDI (SMPTE 292M/259M/424M), up to 1080p/60/59.94/50Hz, access to audio and VANC metadata and timecode
DVB-ASI (Option) DVB-ASI (ETSI TR 101 891 v1.1.1) Transport Stream Input (via SDI connector). Audio PID can be selected for decoding and measurement
HDMI Input (Option) Multichannel baseband or encoded audio can be demultiplexed and analyzed from HDCP and non-HDCP signals
TOSLINK Optical I/O Supports consumer IEC 61937 input and output
Front Panel Controls and Indicators Rotary joystick navigation cluster plus graphical OLED display
Ethernet 10/100BT via RJ45, supports logging, updates, and optional SNMP
USB Connection for local storage for logging and metadata via adapter
Metadata Input VANC from SDI input; serial metadata via USB to RS-485 adapter supporting Dolby Metadata (SMPTE RDD6)
Headphone Output 3.5mm (1/8-inch) side connector, +12 dBu max into 600-Ohms
Power Requirements Internal NiMH rechargeable battery which can be field replaced if necessary; Power and charge via dedicated DC input
Dimensions and Weight 7.9”H x 4”W x 1.6”D (200 x 100 x 41 mm)
Net weight: 3 lbs (1.36 kg), approximate
Shipping Weight 6 lbs. (2.7 kg), approximate
Warranty Standard Telos Alliance 5-Year Warranty. 90 days for battery
Supplied Accessories Carrying case, universal DC power supply, USB memory stick containing user manual

Linear Acoustic MT2000 Bitstream Analyzer Introductory Video


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