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SoundPals™

DMIC-24 User Guide

Dual Microphone Pre-amp

& A-to-D converter

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Содержание DMIC-24

Страница 1: ...SoundPals DMIC 24 User Guide Dual Microphone Pre amp A to D converter ...

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Страница 3: ...d and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at your own expense Warranty Statement Graham Patten warrants that the equipment it manufactures is free from defects in workmanship a...

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Страница 5: ...g Phantom Power 5 DMIC 24 Operation 6 DMIC 24 Interconnection 6 Basic Analog Mic Input to Digital Mixer 6 Advanced Sub Mix from Analog Equipment 7 DMIC 24 Internal Jumpers 8 DMIC 24 Troubleshooting 10 DMIC 24 Specifications 11 Audio Specifications 11 Environmental Specifications and Dimensions 11 Inside the Module 12 In This Section 12 Before You Begin 12 Opening the Module 12 Closing the Module 1...

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Страница 7: ...s modules are extremely compact rugged and identical in size for ease of installation interconnection and use In addition SoundPals support AES3id This allows longer more robust AES signal distribution using standard coaxial cable Error free distances of 1000 feet can be attained using inexpensive coaxial cables Documentation Conventions The following documentation conventions are used in this gui...

Страница 8: ...h box to be sure that all parts are included If any items are missing contact your dealer immediately Power Supply Note SoundPals are delivered with a power connector only A separate power supply must be obtained Graham Patten offers several power solutions for both domestic and international customers Refer to External Power for detailed power specifications for users who wish to configure their ...

Страница 9: ...4 are available 44 1 KHz Model This model defaults to 44 1 KHz via the internal crystal However if an external reference is applied to the AES REF connector the output frequency will lock to the reference 48 KHz Model This model defaults to 48 KHz via the internal crystal However if an external reference is applied to the AES REF connector the output frequency will lock to the reference NOTE The p...

Страница 10: ... supply Refer to External Power for more information regarding external power 3 Phantom Power Switch applies 48 V phantom power to both microphone inputs when in the UP on position In the DOWN off position phantom power is not applied 4 AES Balanced Output provides AES balanced output via XLR connector Output is concurrent with the front panel s AES unbalanced output BNC both can be used simultane...

Страница 11: ...front panel lights when a valid reference signal is applied To phase lock the unit s sample frequency to a reference connect a reference signal between 30 KHz and 50 KHz sampling rate to the AES REF BNC connector The AES signal output will now phase lock to the incoming reference independent of the DMIC s default reference frequency Note that the AES REF input is normally terminated internally wit...

Страница 12: ...fferent sensitivities switching can be accomplished by moving just the higher sensitivity switch Minimum sensitivity occurs when no switches are down When using a stereo pair of microphones ensure that both channels are set to the same sensitivity To set the left and right microphone sensitivity 1 If an input is not used set sensitivity to minimum 2 Have your announcer give a steady normal voice l...

Страница 13: ...e output of the DMIX is routed to the digital mixer for further processing Note that in this configuration all SoundPals are considered synchronous D ESAM Mixer Digital Sources Analog Mics Program Out Digital In SoundPals ADC 24 AES Out AES Ref Right In Left In PWR R Trim L Trim AES Out SoundPals DMIX 41 AES In 1 AES In 2 AES In 3 AES In 4 PWR Control AES Out SoundPals DFADE 2 AES In AES Out PWR R...

Страница 14: ...mpers J12 J13 J14 and J15 affect phantom power Jumpers J12 and J13 affect the left mic input Jumpers J14 and J15 affect the right mic input With pins 2 3 connected on each of the four jumpers phantom power is enabled This is the default factory position With pins 1 2 connected on each of the four jumpers phantom power is completely disabled even if the Phantom Power Switch is UP This setting is re...

Страница 15: ... define the Emphasis Function SW6 SW7 Not Indicated 0 0 None 1 0 50 51 0 1 CCITT J 17 1 1 Switch 8 determines the Channel Mode Function SW8 Not Indicated 0 Stereo 1 If Switch 1 is Open the unit is in the Consumer Mode and the following switch settings apply Switches 2 and 3 define the Sample Frequency Function SW2 SW3 44 1 CD 0 0 48 kHz 1 0 32 kHz 0 1 44 1 kHz 1 1 Switch 4 defines the Emphasis Fun...

Страница 16: ...nd power supply No audio on AES output Is microphone connected correctly Check to pin 2 or ground to pin 3 Does microphone require phantom power Set Phantom Power Switch to UP On position Front panel meters not registering Is microphone sensitivity within SoundPals operating range Adjust sensitivity Ext Ref indicator not lit on front panel Is AES reference connected Check that an AES signal is app...

Страница 17: ... Digital Outputs Terminated 110Ω AES3 75Ω AES3id Sample Rate 30 KHz 50 KHz Output resolution 24 Bit Options RT 2 1RU rack tray for mounting up to 3 units Power supplies PSU 1 90 260V 50 60Hz in line power supply with detachable IEC power cord NOTE All specifications listed above subject to change without notice Environmental Specifications and Dimensions Parameter Specification Dimensions less con...

Страница 18: ...Pals module 1 On the rear panel remove the four Phillips screws from the four corners of the SoundPals module 2 On the front panel remove all Philips XLR mounting screws from the SoundPals module 3 On the front panel remove the BNC nut and associated lock washer 4 Pulling the rear panel carefully draw the internal circuit board and rear panel assembly from the housing CAUTION Keep the case horizon...

Страница 19: ...89 336 EEC EMC Directive 93 68 EEC The connector locking ring must be tight Portable Power Sources For portable SoundPals power sources sealed lead acid nickel cadmium or alkaline primary batteries may be used However the maximum voltage must not exceed 8 6 volts and a minimum of 5 6 volts is required for normal operation Maximum current drain will be 500 mA Power Supply Specifications The followi...

Страница 20: ...Hz with European wall plug CE compliant Elpac MI2007 95 250V AC 47 63 Hz with IEC inlet line cord required Will power up to six units CE compliant Note the following important points regarding the DMIC 24 Under normal conditions a DMIC 24 requires about 300 mA When phantom power is used 500 mA with low ripple is required Only the GPS supplied universal power supply or the Elpac MI2007 is satisfact...

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