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APPENDIX C - MEASUREMENTS        

ENG

  

Page 25 

 

MPX TEST 
 STRUMENTATION 

AUDIODEVICES MPX METER MF1 SOFTWARE KIT 
NATIONAL INSTRUMENT 6034E – 16 BIT ACQUISITION CARD 

 
 

9.4  PILOT QUALITY AND NOISE TEST 

 

 

 

 

PILOT LEVEL 

  -20.0dBr  (Referred to +12dBu 100% Modulation) 

PILOT FREQUENCY 

  19000.34Hz  (at 23° Celsius) 

PILOT DISTORSION 

  0.008%  ( on 100Khz Band) 

PILOT DISNOISE 

  0.078%  ( on 100Khz Band) 

NOISE 

  -88dBr  ( on 100Khz Band, Referred to 100% Mod) 

TEST CONDICTIONS 

  OUT LEVEL = +12dBu, LOAD=600Ohm, PILOT LEV= -20dB 
  MPX SOURCE= INPUT,  MODE=STEREO 

 
 

9.5  PILOT PROTECTION TEST   (MPX CLIPPER OFF) 

 

 

 

 

PILOT PROTECTION 

 78.3dB  (WINDOW FROM 17Khz to 21Khz, Referred to 6.9% Pilot 

injection

) 

NOTE: MEASURE PRESET INDEPENDENT 

TEST CONDITIONS 

OUT LEVEL = +12dBu, LOAD=600Ohm, PILOT LEV=-20dB 
MPX SOURCE= PROC  , MODE=STEREO, MPX CLIPPER=OFF

 

 

Summary of Contents for 50 FM

Page 1: ...Operating manual Rel 1 3 1 PART THREE PROCESSING Falcon 50 FM 6 Band DIGITAL audio PROCESSOR...

Page 2: ...2...

Page 3: ...ESET LIST 14 8 APPENDIX A 16 8 1 SYSTEMEVENTS 16 8 2 GENERALSYSTEMRESET 17 8 2 1 BEFORE BEGINNING 17 8 2 2 RESET PROCEDURE 17 9 APPENDIX B BLOCK DIAGRAMS OF SINGLE STAGES 19 9 1 ANALOGICINPUT 19 9 2 D...

Page 4: ...quit the screen without saving Enter the STEREO ENHANCER block SE and alter its parameters at will At the moment keep unaltered both Brilliance and Multiband Controls Click UNDO to discard last modif...

Page 5: ...e when the audio program to be processed contains very low music levels or very high levels If faster reaction to those audio contents is desired modify the AGC WINDOWS and AGC RELEASE parameters It...

Page 6: ...aving as a reference a Not ITU one To do this select the Preset You would like to begin from open the FINAL LIMITER block and change the Drive control to a value less than 1 5 dB 1 8 dB suggested Also...

Page 7: ...ous signal components To change the Preset currently on air double click the PRESETS block The CHANGE PRESET mask shows the current Preset On Air while the alternative one is shown in the Preset field...

Page 8: ...arameter f i You increase the AGC Release speed the screen header will revert to the the EDIT BUFFER ON AIR mode thus informing the user that the original Preset has been modified and he she is curren...

Page 9: ...s You have reached a final good configuration on the processor This file must be retained for future use f i to reload a valid configuration after a reset to clone the same configuration on multiple u...

Page 10: ...buttons according to their scope IMPORT PRESET Imports a single processing Preset from a file and places it in the memory position according to the selection done in the small black window memory pos...

Page 11: ...ch of two L R channels is splitted into two bands 6 1 TURNING THE AGC ON OFF When needed the AGC stage can be totally defeated by turning the Agc control to Disabled 6 2 SETTING THE AGC SPEED The AGC...

Page 12: ...ompensate in the shortest time Having set AGC Release speed 5 dB sec and WZ Thr 1 dB an input signal of 16 dBm will be amplified to 1 dB in exactly 3 seconds Once entered the Work Zone the approach to...

Page 13: ...tely correlated uncorrelated or partially correlated with percentage user definable With L R Linkage 100 the overall circuit gain is controlled by the greater of the left or right channel signals With...

Page 14: ...Mid 21 RockCompress General Purpose High Low 22 WideCompress General Purpose High Low 23 UrbanCompress Disco House Urban High Low 24 Rock Live General Purpose High Mid 25 Hot Live General Purpose High...

Page 15: ...usufruire della funzione Stereo Enhacer auto_off 7 1 SPEECH DETECTOR MODE TABLE BAND1 BAND2 BAND3 BAND4 BAND5 BAND6 STEREO_ENH MODE 1 0dB 0dB 0dB 0dB 0dB 0dB AUTO_OFF MODE 2 0dB 0dB 0dB 0dB 2dB 3dB AU...

Page 16: ...logger also shows if and when the system has been turned off on and if Alarm conditions arised To access the EVENTS LOG Screen click the SYSTEM tab and then the EVENTS page The EVENTS screen contain t...

Page 17: ...e manual EXPORT ALL procedure If you don t write down the settings for each parameter 7 3 2 RESET PROCEDURE REMOVE POWER from the Falcon 50 FM by disconnecting the AC power cord Disconnect all other c...

Page 18: ...r in its Left position the PC LINK LED will also turn Off As third step remove and set again the Jumper in its Left position very fast all LEDs will start blinking At this moment the Reset has not bee...

Page 19: ...TION MATRIX SWAP L R INVERT L INVERT R Stereo Mono L Mono R Mono L R Input L Input R L R TO AGC STAGE Analogic Input 15 KHz LP FILTER 15 KHz LP FILTER 8 2 DIGITAL INPUT DIGITAL INTERFACE PHASE ROTATOR...

Page 20: ...0 dB 0 100 BAND COUPLING 0 100 CROSS POINT FREQUENCY FILTER SLOPE RMS RMS COMPRESSION CONTROL DRIVE DRIVE 0 0 20 0 dB BAND COUPLING 0 100 RMS AVG LEFT INPUT RIGHT INPUT TO EQUALIZER TO EQUALIZER Dual...

Page 21: ...EXPANDER THRESHOLD RATIO BAND 1 FILTER BANK SELECTION TO BAND MIXER SUPER BASS FILTER SUPER BASS TYPE SUPER BASS COMPRESSOR COMPRESSOR THRESHOLD SUPER BASS 8 6 BAND 2 COMPRESSOR LIMITER 8 7 BAND 3 CO...

Page 22: ...ER BAND 5 COMPRESSOR BANK SELECTION FROM STEREO ENHANCER BAND 5 COMPRESSOR LIMITER STAGE THRESHOLD COUPLING ATTACK RELEASE PRE DRIVE BAND 5 LIMITER THRESHOLD ATTACK RELEASE BAND 5 CLIPPER LIMITER THRE...

Page 23: ...MITER CLIPPING MODE 50uS 75uS 50uS 75uS BRILLIANCE 50uS 75uS 15 KHz LP LA Meter HF Meter OutMixB1 OutMixB6 FINAL EXPANDER POWER LIMITER PA Meter FINAL MID HIGH LIMITER FINAL BASS LIMITER CLIPPING MODE...

Page 24: ...TAL OUT 0 15dB 30Hz 0 15dB 14 9Khz 50dB 16 5Khz DIGITAL INP ANALOGIC OUT 0 15dB 30Hz 0 15dB 14 9Khz 50dB 16 5Khz DIGITAL INP DIGITAL OUT 0 15dB 30Hz 0 15dB 14 9Khz 50dB 16 5Khz BYPASS SYSTEM PERFORMAN...

Page 25: ...ILOT DISTORSION 0 008 on 100Khz Band PILOT DISTORSION NOISE 0 078 on 100Khz Band NOISE 88dBr on 100Khz Band Referred to 100 Mod TEST CONDICTIONS OUT LEVEL 12dBu LOAD 600Ohm PILOT LEV 20dB MPX SOURCE I...

Page 26: ...ST CONDITIONS OUT LEVEL 12dBu LOAD 600Ohm PILOT LEV 20dB MPX SOURCE PROC MODE STEREO MPX CLIPPER 100 PRESET ROCK PRESET 0 9 7 RDS PROTECTION TEST MPX CLIPPER ON RDS PROTECTION 53 2dB WINDOW FROM 55Khz...

Page 27: ...dB 10Khz 72 3dB 15Khz TEST CONDITIONS OUT LEVEL 12dBu LOAD 600Ohm PILOT LEV 20dB MPX SOURCE INP MODE STEREO MPX CLIPPER 100 9 9 MAIN TO SUB TEST MAIN TO SUB 76 2dB 30Hz 75 9dB 100Hz 75 8dB 1Khz 71 3dB...

Page 28: ...equivalent performance to the internal MpxClipper when an external mpx clipper is used TEST CONDITIONS OUT LEVEL 12dBu LOAD 600Ohm PILOT LEV 20dB REFERENCE GENERATOR 1Khz LEFT RIGHT 100 Modulation MP...

Page 29: ...stal CS4272 Connector Type XLR male optical tos link Connector Type XLR male el Balanced EMI suppressed Formats AES3 EBU IEC60958 EIAJCP1201 Nominal Level 5 0 dBu to 20 0dBu 0 1dBu step Sample Rates 3...

Page 30: ...Slope All sound enhancing and Parametric equalizer modules are processed at 47 5 Ksamples sec PRESETS 50 Factory Presets 50 user definable SIX BANDS MULTIRATE PROCESS CONTROLS BICHANNEL DUAL BAND AGC...

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