Controls: Application Information

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IT4A 4-CHANNEL ISOLATION TRANSFORMER UNIT APPLICATION INFORMATION BASIC IT4A HOOKUP (1 OF 4 CHANNELS) UNBALANCED OR ELECTRONICALLY BALANCED SOURCE REQUIRING ISOLATION 1/4" (6.3mm) 3-COND. PHONE PLUGS 1 LINE IN NEUTRI K CROSSOVER IS O OUT NEUTRIK G ND 2 LIF T XLR MALE LINE IN MIXER XLR FEMALE IS O OUT NEUTRI K NEUTRIK G ND LIF T 3 LINE IN NEUTRI K IS O OUT NEUTRIK G ND LIF T 4 LINE IN NEUTRI K 1/4" (6.3mm) 3-COND. PHONE PLUG EQUALIZER IS O OUT NEUTRIK G ND LIF T IT-4A MIXER KEYBOARD ISOLATED BALANCED OR UNBALANCED LOAD ALL CONNECTORS ACCESSIBLE FROM FRONT OF UNIT POWER AMP CROSSOVER SIGNAL PATH MICROPHONE CABLE (Balanced) PATCH CABLE (Balanced/Unbalanced) EQUALIZER CONTROLS: LINE IN: Female 3-pin XLR-type connector or 3-conductor 1/4” (6.3mm) phone jack accepts signal from low-impedance (0 ohm nominal) line-level source. Input impedance (with 600 ohm load on ISO OUT): approx. 680 ohm. GND/LIFT: GND position connects pin 1 (and jack sleeve) of LINE IN to pin 1 (and jack sleeve) of ISO OUT. LIFT position “floats” ISO OUT. Used to reduce hum and buzz by eliminating ground loops and providing proper grounding for various conditions. ISO OUT: Male 3-pin XLR-type connector or 3-conductor 1/4” (6.3mm) phone jack provides floating transformer-isolated lowimpedance output to feed line-level input. Recommended load impedance: 600 ohm. Pro Co Sound 225 Parsons Street | Kalamazoo, MI 49007 800-253-7360 »»www.procosound.com APPLICATION INFORMATION NOTES: 1. For safety reasons all equipment should be equipped with 3-wire AC power cords and plugged into properly grounded receptacles. If all mixers are grounded properly, GND/LIFT switches should be set in the LIFT position for minimum hum and buzz. If this setting does not minimize hum and buzz, it may be indicative of poor grounding quality or improperly wired AC receptacles. Such conditions may be haz¬ardous and should be investigated. If a GND/LIFT switch seems non-functional, check the wiring of all mic cables plugged into the unit. Cables with a jumper between pin 1 and the connector shell can defeat the GND/LIFT switches. CIRCUIT DIAGRAM: PRO CO MODEL: IT4A DIMENSIONS.....................4.75” D x 19” W x 1.75” H 120.7mm D x 482.6mm W x 44.4mm H (1) OF (4) CHANNELS WEIGHT. . ................................................4.40 lb/2.00 kg LIFT SHIPPING WEIGHT............................5.00 lb/2.25 kg S (PIN 1) GROUND LINE IN BRN GRN RED BLU ORN VIO YEL GRY S (PIN 1) C- (PIN 3) T R NOTE: ODD CHANNELS SHOWN EVEN CHANNELS MAGNETIC POLARITY REVERSED. ISO OUT H+ (PIN 2) LOT-1 TRANSFORMER H+ (PIN 2) TOP VIEW C- (PIN 3) T R FRONT VIEW Other TradeTools™ Products from Pro Co AV1A AVP1 AVP1V CB1 DB1 DB2 DB4A DBA1 HJ4P HJ6 iFace iGate iPlate iRack Audio/Video Interface Unit Wallplate Format Audio/Video Interface Unit Wallplate Format Audio/Video Interface Unit with Input Level Control Direct Box Professional Direct Box Professional Stereo Direct Box Rackmount Quad Direct Box Professional Active Direct Box Professional Stereo headphone Junction Box Headphone Junction Box Portable Audio Player Interface Universal Audio Gateway Wallplate Format Portable Audio Player Interface Rackmount Portable Audio Player Interface IT1 Isolation Transformer Unit IT4A Rackmount Quad Isolation Transformer Unit IT8A Rackmount 8-ch. Isolation Transformer Unit LS82 Rackmount 8-ch. 1:2 Line Level Splitter MC2 Microphone Combiner MS2 1:2 Microphone Splitter MS3 1:3 Microphone Splitter MS42A Rackmount Quad 1:2 Microphone Splitter MS43A Rackmount Quad 1:3 Microphone Splitter MS82 Rackmount 8-ch. 1:2 Microphone Splitter MS82P Rackmount 8-ch. 1:2 Phantom Power Microphone Splitter MS83 Rackmount 8-ch. 1:3 Microphone Splitter MS83P Rackmount 8-ch. 1:3 Phantom Power Microphone Splitter RA1 Reamping Box . . . plus our full line of audio cabling, snakes! Pro Co Sound 225 Parsons Street | Kalamazoo, MI 49007 800-253-7360 »»www.procosound.com IT4A-02 Rev. 03/10