Dual Audio Interface Unit LBB 3535/00 The DAI unit can be Assigned for: Two Delegate positions two microphones two loudspeakers or Chairman position one microphone priority control panel one loudspeakers Accepts line input I&O Manual 10.11.2004 DCN SA PO FMU

Dual Audio Interface Unit LBB 3535/00 6-pole Connector for connection of other system units (loop-through). 2 x 3.5 mm stereo jack-plug sockets for connection to LBB 3538/00 FM loudspeaker panel. 2 x 8-pole 262° DIN-type connectors for connection to Microphone with FM Control Panel LBB 3537/xx, or standard hand held microphones LBB 3536/x0 or the Chairman microphone Priority Switch Panel LBB 3537/10 to connector input1. 1 2 3 Notes: - The output is switched off when the corresponding input is switched on. - In voice-activate mode only one microphone input 2 is active! 10.11.2004 DCN SA PO FMU

Dual Audio Interface Unit LBB 3535/00 J2 J1 Closed Open J2 Chairman's microphone : input 2 Priority control panel : input 1 Function Mic. On 1&2 (factory setting) Ambient microphone on input 2 Jumper setting J1 10.11.2004 DCN SA PO FMU

Dual Audio Interface Unit LBB 3535/00 2 1 3 4 5 6 Initialisation button (INIT) used for initialising the unit during installation. Also used to reset the unit’s address. Input 1 and 2: ± 3 dB input level potentiometer for fine adjustment. Initialisation LED indicator. Selector switch for selecting an asymmetrical/symmetrical microphone input Input attenuation selection of: 0, 6, 12 or 18 dB. Factory setting: 6 dB. Microphone or line level select switch. Balanced audio line-input level (-12 dBV) or microphone-input level (-60 dBV) sources, with or without phantom power supply. 10.11.2004 DCN SA PO FMU

Multi-purpose connection unit LBB3540/15 The MPCU can be Assigned for: One Delegate position or One Chairman position Entrance Unit Exit Unit I&O Manual 10.11.2004 DCN SA PO FMU

Multi-purpose connection unit LBB3540/15 6-pole Connector for connection of other system units (loop-through). 2 x 3.5 mm stereo jackplug sockets for connection to: - LBB 3538/00 FM loudspeaker panel. 2 x 8-pole 262° DIN-type connectors for connection to: Microphone with FM Control Panel LBB 3537/xx, or standard microphones LBB 3536/00 and /10 or the Chairman microphone Priority Switch Panel LBB 3537/10 to connector input1. Note: When two microphones are connected (delegate mode only), both are switched on at same time. 1 2 3 10.11.2004 DCN SA PO FMU

Multi-purpose connection unit LBB3540/15 20-pole Micromatch connector for connection to: - LBB 3541/00 FM Delegate voting control panel. - LBB 3542/xx FM Delegate/Chairman voting control panel with LC-display 6-pole modular jack for LBB 3555/00 Intercom handset. 10-pole Micromatch connector for connection to LBB 3543/15 FM ID-Card reader panel. 2 m long cable terminated with a 6-pole circular connector for connection to the trunk-line. 4 5 6 7 10.11.2004 DCN SA PO FMU

Multi-purpose connection unit LBB3540/15 Input level potentiometer: ± 3 dB. Initialisation micro switch (Init) used for initialising the unit during installation. Also used to reset the unit’s address (De-Init). Initialisation indicator (LED) indicating the unit requires initialising. Jumper for assigning the unit as either a delegate or as a chairman unit. Selector switch for selecting: Asymmetrical / Symmetrical microphone input or Symmetrical microphone input with Phantom power supply (applicable to both inputs). Input attenuation selection of: 0, 6, 12 or 18 dB (applicable to both inputs). Default setting: 6 dB. 9 10 8 11 12 13 10.11.2004 DCN SA PO FMU

Multi-purpose connection unit LBB3540/15 Solder spot J2 Open (default): Normal operation Closed: Microphone LED-ring will begin to flash when the last 60 seconds of speech time remains NOTE: If J2 is ‘closed’ when the ‘Voice’ activation mode is selected, the microphone LED-ring will remain lit when speaking into the microphone. Solder spot J3 Closed: No display unit connected J03 J02 J01 10.11.2004 DCN SA PO FMU

Multi-purpose connection unit LBB3540/15 Configuration if Assigned as: Delegate Unit with : Microphone’s, Control Panel(s) (with or without LC-Display), Intercom handset, ID-Card reader. Chairman Unit with : Microphone’s, Control Panel(s) (with or without LC-Display), Intercom handset, ID-Card reader. Entrance Unit with : ID-Card reader, LC-Display Control panel. Exit Unit with : ID-Card reader, LC-Display Control panel. Jumper on topside Chairman / Delegate Open Chairman Delegate Jumper Jo1 inside unit solder type Closed Function Assigned as Chairman Unit Delegate Unit Entrance Unit Exit Unit 10.11.2004 DCN SA PO FMU

FM - Microphone adjustment in DCN Test set-up Audio sine wave generator Home made loudspeaker reference source “A” (see figure below) CPSU/ CCU AC mV meter DCN FM Unit 10.11.2004 DCN SA PO FMU

FM - Microphone adjustment in DCN Microphone stem When the microphone stem assembly has to be replaced, it is required that the input level of the microphone is adjusted again by use of the preset potmeter R(x).. This due to the spread in sensitivity of the microphone capsule (approx.. ±3dB). Procedure The adjustment is a practical procedure to compare factory adjusted units with units were the microphone stem is replaced and to be tuned to the system level again. Measurement data output and adjustments is represented by the symbol Ä Test procedure Comment . 1 - Connect the Delegate unit with the CCU. Select mode only one active mic. on the CCU! 2 - Connect to the ‘Line out’ of the CCU the AC mV meter 3 - Adjust the audio source to approx. 1kHz. The audio level of the lsp. should be distortion free and at a level of speaking distance Takes care that no acoustic nuisance from outside influence the measurements. 10.11.2004 DCN SA PO FMU

FM - Microphone adjustment in DCN Test procedure Comment . 4 - Place the mic. of a factory adjusted Idea, make from an old DCN microphone head Delegate unit close to the loudspeaker on housing an audio reference source. a fixed distance. Mount inside the (empty) head e.g. a paging bleeper as ref. loudspeaker. Important is that for all measurements the distance between loudspeaker and microphone is equal. Ä Measure the audio level on the AC meter. Take this level as ref. for the DCN FM units to be adjusted. Repeat the ref. measurement for a check with other unit(s). The factory level adjustment is ±0.5dB 5 - Remove the factory-adjusted unit and Do not change the audio setting adjustments. place the unit for adjustment in the same position. Ä Read the audio level on the AC meter. Ä Tune R(x) to the audio ref. Default as For the LBB3537/xx, tune the +/- 3dB adjustment measured before. potmeter of the LBB3535/xx or LBB3540/xx 10.11.2004 DCN SA PO FMU

DCN Voting Unit Range LBB4141/x0 LBB4141/00 Voting Panel LBB4141/50 Voting Panel Chinese I&O Manual 10.11.2004 DCN SA PO FMU

DCN Voting Unit LBB4141/00 Allows three types of voting: parliamentary multiple choice (1-5) audience response (++,+,0,-,--) LED vote confirmation indicators LED unit active indicator Pimple for locating third button 10.11.2004 DCN SA PO FMU

DCN Voting Unit Chinese Version LBB4141/50 Allows parliamentary voting Colored voting buttons Chinese text LED vote confirmation indicators LED unit active indicator Pimple for locating “Yes” button 10.11.2004 DCN SA PO FMU

DCN Voting Unit LBB4141/00 1 2 3 4 1 De-init/init switch for de-initialization and initialization of the unit 2 Button order jumper for setting the voting button order for parliamentary voting 3 DCN cable 1 meter DCN cable with male connector 4 DCN cable 1 meter DCN cable with female connector 10.11.2004 DCN SA PO FMU

DCN Voting Unit LBB4141/00 1 2 1 Jumper Position 1 – for Parliamentary Voting 2 Jumper Position 2 – for Multiple Choice (1-5) and for Audience Response (++,+,0,-,--) Note : The default position of the button order jumper is position 2 10.11.2004 DCN SA PO FMU

End Caps. (Set of 50 Pieces). LBB4125/00 Couple Pieces End Caps (Set of 50 Pieces) LBB4125/00 Couple Pieces (Set of 50 Pieces) LBB4127/00 10.11.2004 DCN SA PO FMU

DCN Flush Mounting Units End of section  Robert Bosch GmbH All rights are reserved. Reproduction or passing on to third parties in whole or in parts is prohibited without the written consent of the copyright owner. 10.11.2004 DCN SA PO FMU