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Active Mic

Splitter

Operation Manual

August ‘04

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Summary of Contents for MS1224

Page 1: ...Active Mic Splitter Operation Manual August 04 ...

Page 2: ...Page 2 This page has been left intentionally blank for your notes ...

Page 3: ...4 0 DESCRIPTION OF CONTROLS 8 4 1 Phantom 4 2 48V indicator 4 3 Pad 4 4 Listen 5 0 EXTERNAL CONNECTIONS 9 14 5 1 Input 5 2 Link 5 3 Output A B C and D 5 4 Power In 5 5 Power Out 5 6 Signal Levels 5 7 Multiway Connector Option 5 8 Input Output Options 5 9 Grounding Output D 6 0 POWER SUPPLY UNIT 15 17 6 1 Description of Front Panel 6 2 External Connections 6 3 Power Requirements 7 0 DIMENSIONS 18 ...

Page 4: ...hantom Power is provided with a Phantom Presence LED The MS1224 incorporates a channel monitoring circuit which is accessed on the PSU unit Each channel has a Listen button that connects it momentarily both to an LED bargraph and headphone socket on the PSU front panel The headphone monitor circuit incorporates a dynamics enhancement and protection system This controls the dynamics of the signal i...

Page 5: ...ent 17V 17V DC and 48V PHYSICAL Input Connector XLR 3 pin female Pin 2 hot Output Connector XLR 3 pin male pin 2 hot Interconnection 36 way Centronics cable Multiway connector option 56 pin EDAC Dimensions mm ins 483 19 W 225 8 85 D 133 5 25 H 3U Weight Unit 5 5kg 12 1lbs Shipping 6 1kg 13 4lbs Temperature Range Operating 0 C to 50 C Storage 30 C to 75 C 2 2 MS1224 POWER SUPPLY Power connector Det...

Page 6: ...o comply with the latest Electromagnetic Compatibility EMC regulations However we recommend you do not operate the unit close to strong emitters of electromagnetic radiation such as power transformers motors mobile telephones or radio transmitters The unit should only be connected to a power supply of the type described in 3 4 POWER REQUIREMENTS or as marked on the unit Disconnect the mains supply...

Page 7: ... of charge Limitations This warranty does not cover damage resulting from accident or misuse The warranty is void unless repairs are carried out by an authorised service centre The warranty is void if the unit has been modified other than at the manufacturers instruction The warranty does not cover components which have a limited life and which are expected to be periodically replaced for optimal ...

Page 8: ...s whenever a voltage i e phantom power is present at the Input connector The Phantom Power source detected can be either internal via MS1224 Power Supply or external via for example a FOH console 4 3 PAD switch This switch inserts a 20dB pad into the signal path To be used when line level signals are connected to the MS1224 Please note Maximum input level with the PAD in the 0dB position is 0dBu 0...

Page 9: ...tch on the power supply see Section 6 1 5 2 LINK LINK is wired in parallel with the INPUT connector and can be used to provide a direct feed from the source Ex works the LINK connector is fitted on the front of unit Option A It can however be swapped for OUTPUT A which is normally mounted on the rear panel Option C see Section 5 6 5 3 OUTPUT A B C and D All outputs on the MS1224 are transformer ba...

Page 10: ...rophone levels and maximum input level is 0dBu i e 0 775Vrms The 20dB position should be used for line level signals Maximum input level is then 20dBu and overall voltage gain will be 20dB Maximum Output level from the MS1224 is 20dBu into a 600R load 5 7 MULTIWAY CONNECTOR OPTION In the standard ex works configuration the connector panel on the MS1224 Active Mic Splitter has no provision for mult...

Page 11: ... B and C are on the rear of unit Option B The reverse of Option A i e INPUT LINK and OUT D are on rear of unit and OUT A B C are on front of unit Option C INPUT OUT A and OUT D are on front of unit and LINK OUT B and OUT C are on rear of the unit Option D The reverse of Option C i e INPUT OUT A and OUT C are on rear of unit and LINK OUT B and OUT C are on front of unit The standard factory configu...

Page 12: ...s through 180 i e 10 way ribbon cable connectors J4 on channel boards are now closer to the rear of the unit refit the main assembly to the chassis 8 x M3 Hex Button head screws 2mm Allen Key required and 4 x M3 x 6 countersunk screws on base Re fit Switch panel assembly to front of unit 8 x M3 Pan screws and plug in 12 x Ribbon cable connectors Re fit Connector panel assembly to rear of unit 8 x ...

Page 13: ...0205 between P3 P6 Fit a 3 way 16cm cable assembly Order No 2010205 between P2 P7 Turn chassis through 180 only required for Option D i e 10 way ribbon cable connectors J4 on channel boards are now closer to the rear of the unit refit the main assembly 8 x M3 Hex Button head screws 2mm Allen Key required Re fit Switch panel assembly 8 x M3 Pan screws and plug in 12 x Ribbon cable connectors Re fit...

Page 14: ...to rear of Switch panel Re fit cover 8 x M3 countersunk screws 5 9 GROUNDING OUTPUT D Referring to the above diagram the shorting link on P11 can be used to ground pin 1 on OUT D Please note Ex works default is with OUTPUT D ground lifted ...

Page 15: ...TPUT D is normally supplied with ground lifted See Section D doe details on grounding OUTPUT D This should be repeated on all channel boards that are required to be grounded The front panel accessible fuses are connected in series with the Ground Lift switches and provide over current protection should voltage potentials occur between interconnect equipment To ensure continued protection always re...

Page 16: ...l levels This enables monitoring of microphone function during set up without the need of a vocalist being present on the mic It also provides user protection against sudden loud signals PHONES Headphone output of the monitor buss signal Please note The headphone output uses a standard 6 35mm TRS socket with the monitor signal fed to both Tip and Ring connections i e suitable for use with standard...

Page 17: ...f the rear panel fuse is shown on the cover 230V 115V T315mA T630mA All are slow blow type Please note If the fuse requires changing at any time please ensure the correct type is fitted An incorrect fuse could cause damage to the unit and may constitute a fire hazard The detachable IEC mains lead connections to the appliance are coloured in accordance with the following code Green and Yellow Earth...

Page 18: ...Page 18 7 0 DIMENSIONS ...

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