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Bosch PLN-1LA10 Installation And User Instructions Manual

Security systems plena loop amplifier
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Plena Loop Amplifier
Installation and User Instructions
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PLN-1LA10

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  Summary of Contents for Bosch PLN-1LA10

  • Page 1 Plena Loop Amplifier Installation and User Instructions PLN-1LA10...
  • Page 3: Important Safeguards

    | 3 Important safeguards Before you install or operate the Plena Loop Amplifier, you must read the Important Safety Instructions. The Important Safety Instructions are supplied together with the Plena Loop Amplifier. Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 4: Acknowledgements

    Bosch Security Systems thanks the NVVS (Dutch Association of Hard of Hearing People) for the valuable information that was provided during the development of the Plena Loop Amplifier and the creation of the Installation and User Instructions. Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 5: About This Manual

    Note • Warning General sign for notes. If you do not obey the warning, you can cause personal injury or death. Note Refer to another information source. Bosch Security Systems | 2005-05 | 9922 141 50672...
  • Page 6: Conversion Tables

    Conductive compartment trays Electro-static voltage sensor Cotton overall Conductive floor mat Conductive boots/heel grounding protectors Conductive stool Strap (resistance 0.5 to 1.0 MΩ) Common reference point Conductive bench top Supply ground Bosch Security Systems | 2005-05 | 9922 141 50672...
  • Page 7: Table Of Contents

    Audio inputs ..................................21 Priority input ................................... 22 Fault output .................................... 23 Line output ..................................... 23 Power supply ..................................23 Slave to Master ..................................25 Slave to slave ..................................25 5. Configuration ................................27 Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 8 Phantom power ................................30 5.9.3 Voice activation ................................31 6. Operation ..................................33 Switch on ....................................33 Switch off ....................................33 Change volume ..................................33 Change tone ..................................34 Condition LEDs ..................................34 Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 9: System Overview

    EN55103-2 Safety: acc. to EN60065 figure 1.2: Assistive listening device Induction loop systems: acc. to EN60118-4 table 1.3: Assistive listening device acc. to IEC118-4 Description Tele-coil Microphone Gain control Amplifier Earphone Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 10: Benefits

    PC call stations, an ‘All-in-One’ system and a voice alarm system. Each element is designed to complement all others thanks to matched acoustical, electrical and mechanical specifications. Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 11 1.3: Front and rear views Priority 100V input Master in Phantom Bal. input Master Tone 0º Line Priority Limiter control 90º Slave out Bal. input Mute Line 90º 0º figure 1.4: Block diagram Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 12: Controls, Connectors And Indicators

    (refer to section 6.1 and section 6.2). control (AGC) or the limiter (refer to section 5.7.2). 25 AGC range control - Controls the range of the automatic gain control (see section 5.7.3). Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 13: Design And Planning

    Amplifiers work together to make a magnetic field that has the same strength throughout the whole covered area drops fast to zero beyond the borders of the covered area. figure 2. 1 : Simple system, single loop Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 14 Although it is not required, the sizes of the master and slave induction loops are typically the same. 0° 0° 90° 90° 0° 90° figure 2.3: Simple system, single loops figure 2.4: Simple system, multiple loops Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 15: Expanded Quadrature Systems

    50 and 66% of the width of the the same. master induction loops. 0° 50-66%W 0° 90° 90° 0° 0° 90° 50-66%W 90° figure 2.6: Low-spill system (example) figure 2.5: Expanded system (example) Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 16: Induction Loops

    The numbers next to the curves show the distance from the floor to the induction loop in % of the width (W) of the room. Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 17 2.75 2.50 2.25 2.00 1.75 1.50 1.25 1.00 AWG 20 0.75 0.50 0.25 0.00 76 90100 135 150 wire length (m) figure 2.9: Wire diameter vs. the wire length (copper wires) Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 18: Potential Problems

    2.4.3 Earth loops Earth loops can cause interference on the induction loop system. You can avoid earth loops when you connect the shielding of cables only to one device. Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 19: Installation

    (refer to figure 3.1). 0 dB -6 dB -2 0 dB Po we Cu rre Ma ste Fa ult Lo op Int eg rity AG C Lim ite figure 3. 1 : Installation Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 20 Plena Loop Amplifier | Installation and User Instructions | Installation en | 20 Intentionally left blank. Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 21: External Connections

    Dynamic range: 100 dB Signal-to-noise ratio: 63 dB @ max. volume 75 dB @ min. volume/mute Headroom: 25 dB Phantom power: Switchable, 16 V VOX functionality: Switchable, input 1 mutes input 2 Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 22: Priority Input

    4.3: Priority input, connection Location: Rear side Input sensitivity: 100 V, transformer-balanced Signal-to-noise ratio: 63 dB @ max. volume 75 dB @ min. volume/mute Headroom: 25 dB Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 23: Fault Output

    63 dB @ max. volume 220 to 240 V(AC) 75 dB @ min. volume/mute Headroom: 25 dB Note The PLN-1LA10 Loop Amplifier is delivered with the voltage selector in the 230 position. Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 24 400 W Mains inrush current: max. 7 A @ 230 V(AC), max. 14 A @ 115 V(AC) Signal-to-noise ratio: 63 dB @ max. volume 75 dB @ min. volume/mute Headroom: 25 dB Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 25: Slave To Master

    Phant Phant Line fuse Line fuse : 230 V 3A : 230 V 3A Phant 115V Phant 115V Line Loop Line Loop Line Line figure 4.8: Master and slave loop amplifiers Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 26 Plena Loop Amplifier | Installation and User Instructions | External Connections en | 26 Intentionally left blank. Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 27: Configuration

    9 Switch off the master loop amplifier with the power switch on the front. 10 When the induction loop system contains slave loop amplifiers, configure the electric current through the slave induction loops (refer to section 5.2.2). Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 28: Slave Induction Loops

    Do not forget to re-connect all induction loops 5 Repeat the procedure for the other loop amplifiers in after you have configured the electric current the induction loop system. through the induction loop of the last loop amplifier. Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 29: Supervision

    Priority input volume control. The Priority input volume control is on the rear of the loop amplifier (refer figure 5.5: AGC/Limiter switch to figure 5.4). Priority input Limiter 5K 10K 100V figure 5.4: Priority input volume control Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 30: Range

    Phantom switch in the OFF position. Limiter 5K 10K figure 5.7: Frequency range switch Phantom Line figure 5.9: Phantom switch Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 31: Voice Activation

    To switch Vox off, set the Vox/Mix switch in the Mix position. The audio signal of audio input 1 and the audio signal of audio input 2 are mixed. Phantom Line figure 5. 1 0: Vox/Mix switch Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 32 Plena Loop Amplifier | Installation and User Instructions | Configuration en | 32 Intentionally left blank. Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 33: Operation

    The Power switch is on the front of the loop amplifier (refer to figure 6.1). The green power LED on the front of the loop amplifier (refer to figure 6.2) goes off. Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 34: Change Tone

    Check which input is too Refer to section 5.7. of the inputs is clipped off loud and turn its volume because it is too strong. control counterclockwise to decrease the volume. Bosch Security Systems | 2005-05 | 9922 141 50672en...
  • Page 36 For more information visit www.boschsecuritysystems.com © Bosch Security Systems B.V. Data subject to change without notice 2005-05 | 9922 141 50672en...