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Blonder-Tongue MICM-45D
Modulator A/V Channelized

OUR PART #:  MICM-45D

MICM series of products are fixed-channel analog audio/video modulators available in the following models: MICM-45D: Is available in NTSC channels 2-79 and 95-99 (54-550 MHz).
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Blonder-Tongue MICM-45D
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MICM series of products are fixed-channel analog audio/video modulators available in the following models: MICM-45D: Is available in NTSC channels 2-79 and 95-99 (54-550 MHz). This 5th generation of the MICM series, equipped with the CALMTones feature, utilizes an Audio AGC (Automatic Gain Control) solution that eliminates variations in loudness level that may be present among various program sources. MICM-45DS: Is the same as MICM-45D but with stereo audio output.

Features:

  • Prohibits commercials that accompany broadcast programs from:(i) having modulation levels substantially higher than the broadcast program; and(ii) having an average maximum loudness substantially higher than that of the broadcast program.
  • Provides consistent audio level among all broadcast programs on different channels and among different programswithin the same channel
  • Compact design allows for deployment of 12 channels in 2RU
  • Utilizes SAW filters for improved performance
  • Die-cast chassis for RFI immunity
  • Integrated Stereo encoder

Specifications:

Input

Video

  • Connector: “F” Female
  • Impedance: 75 O 
  • Return Loss: 20 dB 
  • Input Level: 1.0 volt Peak-to-Peak (87.5% depth of modulation) 
  • Frequency Response: 1.0 dB Peak-to-Valley (fv to fv+4.2 MHz) 
  • Peak to Peak Video-to-RMS Hum Ratio: 64 dB 
  • Signal-to-Noise Ratio: 65 dB (Weighted; 4MHz bandwidth) 
  • Differential Gain: 2.0% (87.5% depth of modulation) 
  • Differential Phase: 2.0 degree (87.5% depth of modulation) 
  • Chrominance/Luminance Delay: Per FCC Requirements

Mono Audio(standard)

  • Connector: RCA 
  • Input Impedance: Greater than 10 kO, unbalanced 
  • Input Level (for 25 KHz deviation): 0.5 to 4.0 volt peak-to-peak (constant AGC range) 
  • Frequency Range: 50 Hz to 12 kHz 
  • Frequency Response: ± 0.5 dB 
  • Total Harmonic Distortion: 1% @ 25 kHz deviation 
  • Signal-to-Noise Ratio: 70 dB

Stereo Audio (optional)

  • Connector: RCA 
  • Input Impedance: Greater than 10 kO, unbalanced 
  • Input Sensitivity (for 55 kHz peak deviation): 0.5 to 4.0 volt peak-to-peak (AGC Range with pilot tone) 
  • Frequency Response: +/- 0.75 dB (50 Hz to 12 kHz) 
  • Separation: 20 dB @ 50 Hz to 10 kHz

Output

  • Connector: “F” Female 
  • Impedance: 75 O 
  • Return Loss: 15 dB 
  • Frequency Range: 54 to 550 MHz (NTSC CATV Ch. 2 - 79 and 95-99) 
  • Power Level: +45 dBmV 
  • Power Level Range: 10 dB continuously adjustable 
  • Carrier-to-Noise (In Channel): 63 dB 
  • Broadband Noise: -90 dBc (@ +45 dBmV output level, 4 MHz bandwidth) 
  • Spurious Outputs: -66 dBc 
  • Aural/Visual Carrier Ratio: -11 to -19 dB continuously adjustable 
  • 4.5 MHz Aural Inter-carrier Freq. Tolerance: ±250 Hz; 32 to 122 °F (0 to 50 °C) 
  • Visual Carrier Frequency Tolerance:
      -  Standard Channels
          *  ±10 kHz; 32 to 122 °F (0 to 50 °C) 
      -   FCC Aeronautical Channels:
          *  ±5 kHz; 32 to 122 °F (0 to 50 °C)

Alarms/ Monitoring/ Control

  • Front-Panel Indicators:
      -  Power: Green LED
      -  Stereo: Red LEd (when equipped)
      -  Video Over-Modulation: N/A
      -  Audio Over-Modulation: N/A
  • Front-Panel Control:
      -  Output Level: Potentiometer
      -  Video Level: Potentiometer
      -  Audio Level: Potentiometer
      -  Aural Carrier Level: Potentiometer

Dimensions (W x D x H)

  • MICM Modules: 1.0 x 7.78 x 3.5 inches (25 x 198 x 89 mm) 
  • MIPS-12C Power Supply: 4.6 x 7.5 x 3.5 inches (106 x 191 x 89 mm) 
  • MIRC-12V Chassis: 19 x 12.0 x 5.25 inches (483 x 305 x 133 mm) 
  • Power via MIPS-12C Power Supply: 100-240 VAC; 50/60 Hz 
  • Power Dissipation: ~ 3 W (per MICM Module) 
  • Weight MICM Module: 0.65 lbs (0.3 kg) 
  • Weight Fully Loaded Chassis: 18.2 lbs (8.3 kg) 
  • Operating Temperature: 32 to 122 °F (0 to 50 °C) 
  • Storage Temperature: -13 to 158 °F (-25 to 70 °C) 
  • Operating Humidity: 0 to 95% RH @ 35 °C max, non-condensation 
  • Storage Humidity: 0 to 95% RH @ 35 °C max, non-condensation

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