Telex RTS SPK300L User Manual Download Page 14 | Manualshive

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OPERATION

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Summary of Contents for RTS SPK300L

Page 1: ...MODEL SPK300L TW INTERCOM SYSTEM PORTABLE SPEAKER USER STATION 9300 3505 00 Rev F 08 2005 ...

Page 2: ...92 Please include a note in the box which supplies the company name address phone number a person to contact regarding the repair the type and quantity of equipment a description of the problem and the serial number s Shipping to the Manufacturer All shipments of product should be made via UPS Ground prepaid you may request from Factory Service a different shipment method Any shipment upgrades wil...

Page 3: ... station functional components input output connections and controls The SPK300L User Station has the following functional components a microphone preamplifier with limiter an electronic microphone switch a bilateral current source line driver a listen volume control a headphone amplifier a speaker amplifier a speaker switch a channel selector switch The Microphone Preamplifier limiter converts th...

Page 4: ...or each channel a separate wire and a termination network consisting of a 200 ohm resistor and a 10 microfarad capacitor in series See the Application Diagrams in the TW Intercom Systems Technical Manual A TW System Power Supply terminates a line with 200 ohms Operational Controls The SPK300L User Station has the following controls described and shown in Section 3 Channel Select Switch Latching ac...

Page 5: ...mperes power supply at voltage 12 volts OPERATING DISTANCES MaximumDC limit 5 000 ft distance along cable power supply to single station 22 gauge wire DC voltage drop limitation MaximumAC limit 10 000 ft dry pair power supply at each end 22 gauge wire System Capacitance 0 3 microgarads cumulative effect of 10 000 ft of maximum cable at 30 picofarads foot USER STATIONS SPECIFICATIONS Input DC volta...

Page 6: ...in 24 dB Overall Voltage Gain 9 volts peak to peak into 25 ohms Output Power Headset Station 1 2 watt into 25 ohms Speaker Station 2 watts into 8 ohms Frequency Response 150 Hz to 8000 Hz 3 dB Headphone Impedance Range 25 to 600 ohms Sidetone Adjustment Range 20 dB to full ON CALL LIGHT Signaling Frequency 20 000 kHz 3dB Flashing Rate 3Hz 2 Hz DIMENSION 3 468 H x 1 5 W x 3 0 D 13 21 x 3 81 x 7 62 ...

Page 7: ...re recommended because less line current is required from the power supply Use headphones with an impedance of 25 ohms or greater Low impedance 8 ohm headphones are not recommended Headphones with good acoustic isolation 20 to 40dB improve communication in high ambient noise environments and allow the user to use the headphones at a less tiring lower volume In the headset connecting cable prevent ...

Page 8: ...plications may use either standard microphone cable for convenience or two twisted pair cable considerably less expensive than microphone cable Standard wire size for the TW Intercom System is 22 gauge wire for interconnection For permanent installations it is recommended that each channel should have individually shielded twisted pair of at least 22 gauge wire such as Belden 8723 for 2 channels C...

Page 9: ...cameras When the microphone switch is turned on the dynamic micro phone acts as a sensitive antenna for hum sources USER STATION CONNECTIONS Dynamic Microphone headset connector XLR 4 31 type receptacle J1 Input level 55 dbu nominal Output level to headphone 10 volts peak to peak open circuit Pin 1 Microphone low Pin 2 Microphone high Pin 3 Headphone low Pin 4 Headphone high Carbon Microphone head...

Page 10: ...INSTALLATION 8 ...

Page 11: ...ning ON the microphone here also slightly dims or attenuates the speaker 4 Volume A speaker headphone volume control May be dual control for the Duel Listen DL or Program E Option CAUTION Always turn this control all the way couterclockwise to the left before plugging in the headset 5 Call Light Indicator This switch indicator appears only on the user stations with the Switch Call Light option Whe...

Page 12: ...ckwise then adjust it clockwise for a comfortable level of your own voice while talking into the headset microphone EN5541 Installation Local Power Option RMS300 and SPK300L The RMS300 amd SPK 300 can be powered from an external local power supply of between 18 to 33 volts DC the local power option as supplied by RTS Systems uses a power supply assembly RTS 9020 4425 00 which is 117 VAC 60 Hz in 2...

Page 13: ...l channels are termiated with a 200 ohm system termination System terminations see diagram below include An RTS System TW power supply A discrete 200 ohm resistor for each locally supplied channel When application of a D C voltage is expected or possible a 10 microfarad 50 Volt capacitor in series with the 200 ohm resistor for each locally supplied channel Examples of RTS Systsm power supplies are...

Page 14: ...OPERATION 12 ...

Page 15: ...13 CHAPTER 4 DRAWINGS ...

Page 16: ...RMS300 Standard L Option and Local Power Option WD2712 Wiring Diagram pg 2 of 7 SPK RMS300 3CH and 3CH L Options WD2712 Wiring Diagram pg 3 of 7 SPK RMS300 DL WD2712 Wiring Diagram pg 4 of 7 SPK RMS300 FB Option WD2712 Wiring Diagram pg 5 of 7 SPK RMS300 DL 3CH WD2712 Wiring Diagram pg 6 of 7 SPK RMS300 Program Input Option WD2712 Wiring Diagram pg 7 of 7 SPK RMS300 DL Dual Listen E Program Input ...

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Page 37: ...NOTES ...

Page 38: ...12000 Portland Avenue South Burnsville MN 55337 U S A ...

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