MSD100C

MSD100C Loudness Audio & Loudness Meter

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Product Description

Audio Connector 25-pole D-Sub connector: 2 balanced, analogue stereo inputs, 1 AES3 input
   
Digital Input 
Sample rate 30 kHz to 100 kHz
Input sample rate converter Default internal sample rate: 48 kHz
Bit resolution 24 bit
Group delay 1.75 msec
Passband ripple ±0.008 dB
Total harmonic distortion less than –103 dB at 1 kHz and –1 dBFS
Dynamic range larger than 120 dB
Nominal input impedance 110 ohm
   
Analogue Inputs 
Maximum input level +24 dBm
Sample rate with internal sync 48 kHz
Sample rate with external sync 32 to 50 kHz
Bit resolution 24 bits
Frequency response 10 Hz to 21 kHz within 0.3 dB
Passband ripple ±0.002 dB
Dynamic range more than 103 dB
Crosstalk between inputs less than –96 dB
Signal-to-noise ratio typical 93 dB relative to –1 dBFS
Nominal input impedance larger than 20 kohm
   
Scales
Loudness scale +9 dB to +18 dB LU for bar graph display of L, R, and Sum. ITU BS.1771 Type II display. Numerical display of sum channel, The value of the programme in loudness units (LU) represents the loss or gain in dB that is required to bring the programme to 0 LU.
Phase Correlation Meter -1 to +1. A reading of +1 indicates full correlation, while –1 indicates no correlation or out  of phase signals.
Audio Stereo Vectorscope Mono and S axis with indication of L at 135o and R at 45o
   
Loudness
Reference level digital -18dBFS at 300 Hz.
Reference level analogue -6 dBu to +6 dBu.
Gate level range rel. to reference level -6 dB to -63 dB.
Sliding integration window range 0 to 9 seconds
Longtime integration range 1 year
Peak indicator threshold -2 dBFS
Peak indicator hold time >0.5 s
Calibration: ±0.1 dB
Dynamic response @ 5 kHz burs 10 ms: -17 dB
100 ms: -7 dB
300 ms: -3 dB
1000 ms: -0.3 dB
Return time for 20 dB 1.7 s
   
LCD Display Type
External Display output Colour VGA, 640 x 480 pixels
Backlight CCFT Backlight
   
Utility Connector
  9-pole D-Sub
Power input 12 to 15 V DC
Serial data port RS-232
   
Power Supply
Wall plug version  
Voltage: 100 to 240 V AC 100 to 240 V AC
Frequency 48 to 62 Hz
   
Mechanical Data
Height 144mm
Width 186 mm
Depth 30 mm
Weight 1.2kg

Features

  • 1 AES3 Balanced input
  • 2 analogue inputs, transformer balanced
  • Accurate loudness matching of audio signals
  • Loudness Measurement in accordance with ITU Rec. BS.1770 and BS.1771
  • Fast mode for real time control of loudness
  • Integration mode for loudness gain setting
  • Selectable digital and analogue stereo inputs
  • Displays left and right channel
  • loudness as well as the summed loudness
  • Numerical display of summed loudness
  • Scale in Loudness Units (LU) from –18 dB to +9 dB
  • Audio vector oscilloscope and phase correlation meter displays
  • Full VGA colour display and VGA output for external display
  • Includes wall plug power supply

User Manual

For detailed performance parameters and technical specifications, refer to Datasheet MSD100C