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AMU1-CHD+mk2 

 

Issue 1 

 

1.0 

Introduction 

 
The AMU1-CHD+ mk2 is a 1RU x 320mm deep Audio Monitoring Unit with two 26 segment 
bargraphs for audio level measurement. 
 
The following features are standard: 
 

  Two switch selectable stereo analogue inputs 

  Four AES /EBU inputs  

  Two HD/SDV auto sensing inputs 

  Out-of-phase error indication 

  EBU Digital and PPM metering scales 

  Encoded PAL/NTSC composite or SDI output (Switch selectable) 

  Re-clocked serial output of the selected input 

  Integral loudspeaker system 

  40 Watt total amplifier power with 12VDC input 

  Headphone outputs with LS muting 

  Two 12V DC inputs 

  Stereo /multi channel line outputs 

  Two decoded AES outputs 

  Variable line output 

 
 
 
 

 
 
 
 
 
 
2.0 

Front Panel Controls and Indicators 

 
 
2.1 

Input and Meter Selection Switches 

 

Digital Source Select

   

Selects AES 1-2 and 3-4 (in conjunction with the channel    

 

 

 

 

switch) and SDI 1 & 2 Groups 1-4  

 

Channel Select 

 Selects AES1,2,3 and 4 and pairs 1 (D1) and 2 (D2) from both the 
SDV inputs. Analogue 1 and 2 are also selected in position Anl 1 
and Anl 2. 

 

Meters

 

Left Channel is fed to the left bargraph and Right Channel is fed to 
the right bargraph. 

 
Phase 

Momentary  phase  reverse  between  A1  and  A2  pairs.  A  non 
latching push switch with Red/Green LED indicates phase. Push to 
reverse. 

 

 

Volume Control 

Allows the audio level to be varied. 

 
 
 
 
 
 
 

Summary of Contents for AMU1-CHD+MK2

Page 1: ...AMU1 CHD MK2 AUDIO MONITORING UNIT Handbook TSL Products Units 1 2 First Avenue Globe Park Marlow Bucks SL7 1YA Telephone 44 0 1628 564610...

Page 2: ...AMU1 CHD mk2 Issue 1 This Page is Blank...

Page 3: ...n nearest the pip on the Lemo style connector All metal panels are bonded together Check that the voltage selector setting if fitted and the fuse rating is correct for the local mains supply Due consi...

Page 4: ...ult Report sent with the unit A contact name and telephone number are also required with the Fault Report sent with the unit Fault report details required Company Name Address Contact Name Telephone N...

Page 5: ...AMU1 CHD mk2 Issue 1 This Page is Blank...

Page 6: ...witches 2 2 Monitoring select Switch 3 0 Pin out Details 3 1 Analogue XLR Connectors 3 2 AES XLR connectors 3 3 Analogue Output connector D25 Socket Pin out 3 4 AES Input Output connector 3 5 DIP swit...

Page 7: ...phone outputs with LS muting Two 12V DC inputs Stereo multi channel line outputs Two decoded AES outputs Variable line output 2 0 Front Panel Controls and Indicators 2 1 Input and Meter Selection Swit...

Page 8: ...al loudspeakers and line outputs N B Position D is spare 3 0 Pin out Details 3 1 Analogue XLR Connectors C PIN FUNCTION ANALOG 1 1 GND ANALOG 1 2 1 IN ANALOG 1 3 1 IN ANALOG 2 1 GND ANALOG 2 2 2 IN AN...

Page 9: ...ng cable D 25 SOCKET ON AMU AUDIO OUTPUTS PIN NO FUNCTION 1 14 2 15 3 16 4 17 5 18 6 19 7 20 8 21 9 22 10 A2 FR 23 A2 FR 11 Ground 24 A1 FL 12 A1 FL 25 Ground 13 N C Note this is a generic pin out the...

Page 10: ...Input 2 15 Ch3 4 Input 2 3 Ch5 6 Input 3 16 Ch5 6 Input 3 4 Ch7 8 Input 4 17 Ch7 8 Input 4 5 Ch1 2 Output 1 18 Ch1 2 Output 1 6 Ch3 4 Output 2 19 Ch3 4 Output 2 7 N C 20 N C 8 N C 21 N C 9 N C 22 Gro...

Page 11: ...level configuration switches on the HDC2 board operates in a 2 s complement manner the relationship between the dBfs level setting in the digital domain and the dBm level setting in the analogue doma...

Page 12: ...re the changes take effect Output analogue levels are adjustable over the following range 0dBm 0 775V into 600 i e 1mW power dissipation 0dBu 0 775V RMS PPM 4 Nominally 18 dB ref 0FS 0dBu output Europ...

Page 13: ...Standard AES3 1994 at 48kHz 44 1kHz or 32kHz Impedance 110 ohm balanced Input HD SDV 1 2 Connector Type BNC Standard 4 2 2 component with embedded 48Khz audio SMPTE 259M 292M and 424M Impedance 75ohm...

Page 14: ...type See section 3 4 for details Impedance 110 Ohm Output Selected SDI group HD Standards Supported 1080i 50 1080i 59 94 1080i 60 720p 50 720p 59 94 720p 60 Performance Response 70Hz to 20KHz Electri...

Page 15: ...AMU1 CHD mk2 Issue 1 7 0 Front and rear view...

Page 16: ...AMU1 CHD mk2 Issue 1 8 0 Block Schematic...

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