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Pub. 42004-307G

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AGE

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NDUSTRIAL

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NTERCOMS

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f:\standard ioms - current release\42004 instr. manuals\42004-307g.doc
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Figure 13. Unbalanced Common Line Configuration

Figure 14. Master/Slave Balanced Configuration with Model 400-001 as Master

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Summary of Contents for GC-AC1

Page 1: ...way communication in non hazardous industrial applications Each model is field configurable for one of two types of systems either Listen Talk or Master Slave All units are factory configured for the Listen Talk system Listen Talk System In a Listen Talk system the press to talk switch must be held down as long as the operator talks Releasing the switch deactivates the microphone and returns the u...

Page 2: ...two pair cable No 18 AWG between stations for maximum system hum noise immunity Extreme hum noise areas may require shielded twisted two pair cable Installation Since a good installation is important in obtaining the best possible performance of the communications system determine the operating mode of each unit and carefully plan the overall installation before actual work is started Read the ent...

Page 3: ...e six screws securing the front cover 3 Lift out the front panel assembly and tilt to the left Use caution to ensure that no unnecessary strain is placed on the attached wiring harnesses 4 If configuring the unit as a slave slide the PCBA s mode switch SW3 to the SLAVE position See Figure 2 5 If operating in an unbalanced cable system reposition the PCBA s jumper P5 J5 from the BAL position to the...

Page 4: ... purposes 2 The audio control wiring for all models is designed for connection to Class 2 circuits Mounting Instructions The wall s mounting surface composition and hardware to be used customer supplied must be suitable to withstand the unit s weight to prevent damage and or personal injury If the unit is mounted to building structure GTC Part No 12704 001 Mounting Bracket Kit should be used Refer...

Page 5: ...em you are installing Reminder about balanced and unbalanced systems If interconnecting to an unbalanced system be sure to move the Intercom s internal jumper P5 J5 to the UNBAL position For example GAI Tronics RigCom products use an unbalanced system therefore the Intercom s internal jumper P5 J5 must be moved to the UNBAL position Figure 3 Master Slave Unbalanced Configuration Figure 4 Unbalance...

Page 6: ...4 307G EZ PAGE INDUSTRIAL INTERCOMS Page 6 of 16 f standard ioms current release 42004 instr manuals 42004 307g doc 03 15 Figure 5 Master Slave Balanced Configuration Figure 6 Balanced Common Line Configuration ...

Page 7: ...en Talk or Master unit s control cable pair will allow hands free operation of the unit s Listen Talk functions Refer to Figure 7 for more detail showing interconnection to system wiring No internal connection to the unit is needed OFF ON VOLUME PUSH TO CALL GAI TRONICS CORPORATION No 400 001 RIGCOM MASTER SLAVE COMMON DATE CODE 17R9 CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN Figure 7 Footswitch I...

Page 8: ...n the Listen Talk switch in the TALK position and talk into the speaker which acts as the microphone The Master unit s Listen Talk switch performs the added function of switching the Slave unit s mode from talk to listen The Slave unit will broadcast the received page from its speaker Releasing the Listen Talk switch does the following Returns the unit to the listen mode by switching the Master un...

Page 9: ...lk unit Note These wires should be left un terminated and insulated Correct system wiring Acoustic feedback when making a page Units are positioned too close together or oriented toward each other Reorient units away from each other or reduce speaker volume level Listen Talk or Master unit is always in the talk mode Internal mode switch is set to SLAVE Reposition internal mode switch to L MASTER P...

Page 10: ... nominal Power consumed at nominal Off mute Standby Maximum speaker out 8 watts 5 3 VA 1 8 W 6 9 VA 4 W 27 VA 22 W Amplifier PCBA Frequency response 250 8 000 Hz 0 3 dB ref to 1 kHz 155 Hz 12 kHz 6 dB Distortion 1 maximum THD 1 kHz 8 watts Gain 25 dB nominal listen mode 46 dB nominal talk mode Input sensitivity for rated output 1 kHz 310 mVRMS Controls Balanced Unbalanced jumper L Master Slave mod...

Page 11: ...th wire ends Enclosure Cast aluminum Color Blue RAL5017 Temperature range Operating Storage 40º F to 158º F 40º C to 70º C Dimensions 11 20 H 6 97 W 5 45 D 284 5 177 0 138 4 mm Recommended Maximum number of Listen Talk units per system 20 Maximum number of Slave units per Master unit 1 Shipping weight GC AC1 and GC AC2 13 0 lbs 5 9 kg Shipping weight GC DC1 12 0 lbs 5 4 kg Unit weight GC AC1 and G...

Page 12: ... the ability to operate unbalanced or balanced In the balanced system the audio pair is not ground referenced and the control signal requires a ground signal with it For interoperability between the EZ Page and the MS39xx Series configure the EZ Page for an unbalanced system by placing the jumper for P5 in the UNBAL position No changes are required to the MS39xx Series For Master Slave operation c...

Page 13: ...07G EZ PAGE INDUSTRIAL INTERCOMS Page 13 of 16 f standard ioms current release 42004 instr manuals 42004 307g doc 03 15 Figure 9 Master Slave Configuration with EZ Page as Slave Figure 10 Common Line Configuration ...

Page 14: ...d reference for the control signal In the balanced system the audio pair is not ground referenced and the control signal requires a ground signal For interoperability between the Model 400 001 and the EZ Page Series configure the 400 001 and the EZ Page identically balanced or unbalanced by the location of P5 on the EZ Page and P3 on the Model 400 001 The following wiring diagrams are for the diff...

Page 15: ...DUSTRIAL INTERCOMS Page 15 of 16 f standard ioms current release 42004 instr manuals 42004 307g doc 03 15 Figure 13 Unbalanced Common Line Configuration Figure 14 Master Slave Balanced Configuration with Model 400 001 as Master ...

Page 16: ...NDUSTRIAL INTERCOMS Page 16 of 16 f standard ioms current release 42004 instr manuals 42004 307g doc 03 15 Figure 15 Master Slave Balanced Configuration with Model 400 001 as Slave Figure 16 Balanced Common Line Configuration ...

Page 17: ... of the Contractor s personnel from the work site Re performance of services shall be Buyer s sole and exclusive remedy and in no event shall GAI Tronics warranty obligations with respect to services exceed 100 of the total cost of the services provided hereunder Warranty Periods Every claim by Buyer alleging a defect in the goods and or services provided hereunder shall be deemed waived unless su...

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