Imagine Communications Videotek CMN-LA Loudness Analyzer

Imagine Communications Videotek CMN-LA Loudness Analyzer

Imagine Communications Videotek CMN-LA Loudness Analyzer

B&H # IMCMNLA MFR # CMN-LA
Imagine Communications Videotek CMN-LA Loudness Analyzer

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  • 1Description

The Videotek CMN-LA Loudness Analyzer from Imagine Communications is an audio monitoring device that measures loudness and true peak measurements according to the ITU-R BS.1770-3 standard with five times oversampling. Built-in modes offer quick setup to ARIB TR-B32, ATSC A/85 or EBU R 128 recommendations. Up to five days of loudness data are stored internally and easily retrieved through the USB port or internal web server. Metering of up to 16 channels simultaneously makes for rapid alignment checks.

The CMN-LA has an integrated TC Electronic loudness radar meter which shows loudness on short-terms meters, graphs covering periods from one minute to 24 hours, and numeric display of the long-term center of gravity (average loudness) and consistency (loudness range). The flexible display of the CMN-LA presents data in a format most useful for the job at hand. Use the integrated TC Electronic loudness radar meter during production, the audio status display during program ingest, and the combination of loudness and true peak meters, numeric display and trend chart for master control monitoring. The chart data can be exported for compliance reporting. Adjustable audio output delay compensates for video monitor processing in critical evaluation suites.

The basic CMN-LA unit operates with 3G/HD/SD-SDI embedded audio sources, with a hardware option for eight AES inputs, four AES outputs and eight analog outputs. The analog outputs are meant to drive high impedance loads. The CMN-LA also includes internal speakers and a front-panel headphone jack for source confirmation. A mixdown mode can be applied to the headphone output when using discreet sources. The mixdown parameters are taken from VANC medatada if present, otherwise internal menu settings are used. The CMN-LA loudness analyzer has a short mounting depth which makes it ideal for use in a QC monitoring rack or on the meter bridge of an audio console.

Loudness measurement to ITU-R BS.1770-3
True peak measurement to ITU-R BS.1770-3 with five times oversampling
Integrated TC Electronic loudness radar display
Trend chart of levels (15 seconds to 24 hours)
Export values to a PC
Audio status display of clips, mutes, average, high and low levels
Meter up to 16 channels
Alarms for levels, status and Dolby metadata
Two triple rate SDI inputs
Adjustable output delay
In the Box
Imagine Communications Videotek CMN-LA Loudness Analyzer
  • Breakout Connector for LTC/GPI
  • Power Cord
  • Power Supply Assembly
  • Limited 27-Month Warranty
  • Table of Contents
    • 1Description
    Analog Audioyfaurzuu
    Audio Frequency Response ±0.1 dB
    Signal to Noise Ratio (SNR) ≥ 100 dB
    Total Harmonic Distortion/Noise .02%
    Crosstalk ≤ -80 dB
    SD/HD/3G-SDI
    Input
    Input Type 2 active looping inputs
    Input Connector BNC female
    Input Impedance 75 ohms nominal
    Signal Amplitude 800 mV nominal
    DC Offset ±0.5 V
    Input Return Loss 3G-SDI: ≤ -10 dB, 1.485 to 2.97 GHz
    HD-SDI: ≤ -15 dB, 270 MHz to 1.485 GHz
    SD-SDI: ≤ -25 dB, 5 to 270 MHz
    Cable Equalization 3G-SDI: ≥ 80 m, Belden 1694A
    HD-SDI: ≥ 100 m, Belden 8281
    SD-SDI: ≥ 300 m, Belden 8281
    Output
    Output Impedance 75 ohms
    Output Return Loss ≤ -15 dB, 5 MHz to 1.485 GHz
    ≤ -10 dB, 1.485 to 3 GHz
    Output Signal 800 mV ±10%
    DC Offset 800 mV ±10%
    DVI-I Output
    Connector DVI-I
    Output Resolution 1024 x 768 (XGA)
    Levels Digital, Per DDWG DVI rev 1
    Pixel Fill Rate 65 Mbps
    Analog Outputs
    Connector 3.5 mm phone jack, headphone
    Load Impedance 16 ohms nominal
    Maximum Output Level 44 mW RMS
    Total Harmonic Distortion/Noise ≤-65 dB
    Communication Interface
    Ethernet RJ45 Ethernet port
    Standard: 10/100Base-T conforms to IEEE802.3
    Performance Metric: Transfer a captured frame to a PC in 30 sec, dedicated LAN
    USB USB 2.0 host port
    LTC Channels 15-pin Sub-D, LTC/GPIO
    Power Requirements
    Connector 15 VDC nominal
    11 VDC minimum
    17 VDC maximum
    Power Consumption 25 W nominal
    Over Voltage Protection ±50 VDC nominal
    Environmental
    Operating Temperature 32 to 122° F (0 to 50° C)
    Storage Temperature -22 to 149° F (-30 to 65° C)
    Humidity (Non-condensing) Operating: 20 to 80%
    Non-Operating: 5 to 90%
    Transport Protocols 24" (9.5 cm) impact-drop survivable in original factory packaging
    Altitude 6562' (2000 m)
    Pollution Degree 2
    Mechanical
    Dimensions 5.22 x 8.46 x 5.8" (13.26 x 21.49 x 14.73 cm)
    Weight 5 lb (2.27 kg)
    Packaging Info
    Package Weight 5.0 lb
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