Installing and Operating a System
38
1 Integrus Tech IO ST/SEU-CO | | 03.Mar.0 6 © Robert Bosch GmbH reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties. Security Systems Installing and Operating a System System connections Signal delay calculation Programming the Transmitter Testing the reception quality I&O Manual
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Installing and Operating a System. System connections Signal delay calculation Programming the Transmitter Testing the reception quality. I&O Manual. Connecting the DCN Next Generation system. - PowerPoint PPT Presentation
Transcript of Installing and Operating a System
1 Integrus Tech IOST/SEU-CO | |03.Mar.06 © Robert Bosch GmbH reserves all rights even in the event of industrial property rights. We reserve all rights of
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Installing and Operating a System
System connections
Signal delay calculation
Programming the Transmitter
Testing the reception quality
I&O Manual
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Connecting the DCN Next Generation system
The transmitter can be directly connected to the optical network of the DCN Next Generation conference system by means of an optical network cable
Network mode must be enabled
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Connecting the DCN system
The transmitter requires the DCN Interface Module
The connections between DCN units and the transmitter are made in a loop-through configuration.
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DCN interface module
For interfacing with DCN
Allows simultaneous interpretation generated by DCN
LBB3423/20
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Connecting the CCS800 and Interpreter desks
The transmitter requires the Symmetrical Audio Input and Interpreters Module.
Up to 12 6-Channels interpreter desks can be loop-through connected to the module.
The floor signal for the interpreters desk is connected to the Aux-Left input of the transmitter.
The floor signal from a CCS 800 discussion system line output or from an external audio source, such as an audio mixer.
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For use with analogue audio systems with 8 symmetrical Inputs
Up to 12 6-Channels interpreter desks LBB3222/04
Automatic floor selection for unused interpretation channels
LBB3422/20
Symmetrical Audio Input Module
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Symmetrical Audio Input Module
TT TT TT TT TT TT TT TT
T=optional (Beyer type TR/BV3)
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Settings on the Audio Input Module
Floor audio connection from CPSU line output to Aux. input of infra-red transmitter
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Maximum cable length to interpreters’ desks
Maximum Up to 12 6-Channels interpreter desks can be loop-through connected to the module.
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LBB3422/20Symmetrical Audio
Input Module
LBB3422/20Symmetrical Audio
Input Module
3,3uF/25V
1
14
4
18
2
16
5
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7
19
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6
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11
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21
3
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13
10
Audio 1 input
Audio 2 input
Audio 3 input
Audio 4 input
Audio 5 input
Audio 6 input
Audio 7 input
Audio 8 input
Audio Comm
Audio AF
Supply (+12V)
Supply (+12V)
1
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4
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OR Floor Channel
Channel 1
Channel 2
Channel 3
Channel 4
Channel 5
Channel 6
Busy in
Comm.
OR2 Auto RelaySupply (+27V)
Supply (+27V)Ground
Ground
FL. CH.1 CH.2 CH.3 CH.4 CH.5 CH.6
Earth
Interpreter‘s
Desk
Supply (- 12V)
Supply (- 12V)Earth
Interface connection to Recording System
To be made locallyTo be made locally
To recording systemTo recording system
LBB3222/046-Channel
Interpreter’s Desk
LBB3222/046-Channel
Interpreter’s Desk
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Connecting other external audio sources
The audio signals (stereo or mono) are connected to the audio input cinch connectors.
When the cinch audio inputs are used in combination with inputs via one of the interface modules, the signals on corresponding channels are mixed.
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To use the emergency signal function, a switch (normally-open) must be connected to the emergency switch connector.
When the switch is closed, the audio signal on the Aux-right input is distributed to all output channels, overriding all other audio inputs.
The Aux. Input mode of the transmitter must be set to ‘Mono + Emergency’
Connecting an emergency signal switch
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Connecting to another transmitter
The transmitter can operated in slave mode to loop-through the IR radiator signals from a master transmitter.
One of the six radiator outputsof the master transmitter is connected with an RG59 cable to the radiator signal loop-through input of the slave transmitter.
The Transmission mode of the slave transmitter must be set to ‘Slave’
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Connecting radiators to transmitter
The transmitter has six BNC connectors on the rear panel. They can each drive up to 30 radiators in a loop-through configuration.
The radiators are connected with RG59 cables (75 Ohm).
The maximum cable length per output is 900 m.
Automatically cable termination by a built-in detection circuit.
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Connecting radiators to transmitter
Notes:
Never leave an open-ended cable connected to the last radiator in a loop-through chain.
When connecting infra-red radiators, do not split the cable, else the system will not function correctly.
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Signal delay calculation
Setting the radiator delay compensation switches
Differences in cable length between the transmitter and the radiators can cause black spots as a result of the multipath effect.
The IR signal from a radiator with a long cable is delayed with respect to the signal from a radiator with a shorter cable.
To compensate these cable length differences, the delay of a radiator can be increased to make it equal to the signal delay of the other radiators.
This signal delay can be set with delay switches at the back of the radiator.
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Signal delay calculation
Two ways for determining delay compensation switch positions of the radiator.
1. By measuring the cable lengths
1.1 Manual
1.2 delay switch calculation tool (recommended)
2. By using a delay measuring tool
2.1 Manual
2.2 delay switch calculation tool (recommended)
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Signal delay calculation 1.1
To determine the delay switch position based on cable lengths and calculating manually follow the next steps:
1. Measure the lengths of the cables between the transmitter and each radiator.
2. Multiply these cable length differences with the cable signal delay per meter (the manufacturer specified factor). This is the cable signal delay difference for that radiator.
3. Determine the maximum signal delay.
4. Calculate for each radiator the signal delay difference with the maximum signal delay.
5. Divide the signal delay difference by 33. The rounded off figure is the signal delay switch position for that radiator.
6. Set the delay switches to the calculated switch positions.
Cable Measuring
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Signal delay calculation 1
TransmitterTransmitter
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Signal delay calculation 1.2
To determine the delay switch position based on cable lengths and the delay switch calculation tool follow the next steps:
1. Start the calculation tool
2. Select system type
3. Fill-in the cable signal delay per meter of the used cable. (specified by the cable manufacturer).
4. Fill-in the number of radiator(s) on each output
5. Fill-in the measured cable lengths of the cables between the transmitter and each radiator.
6. Set the delay switches on the radiator(s) to the automatically calculated switch positions.
Calculation tool
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Signal delay calculation 2.1
To determine the delay switch position by delay measuring tool and calculating manually follow the next steps:
1. Disconnect the cable from a radiator output of the transmitter and connect this to a delay measurement tool.
2. Disconnect the cable from the first radiator in that trunk.
3. Measure the impulse response time (in ns) of the cable(s) between that transmitter and the radiator.
4. Reconnect the cable to the radiator and repeat steps 2 to 4 for the other radiators (started by the next radiator in that trunk).
5. Reconnect the cable to the transmitter and repeat step 2 to 5 for the other radiator outputs of the transmitter.
6. Divide the impulse response times for each radiator by two. These are the cable signal delays for each radiator.
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Signal delay calculation 2.1
7. Determine the maximum signal delay.
8. Calculate for each radiator the signal delay difference with the maximum signal delay.
9. Divide the signal delay difference by 33. The rounded off figure is the delay switch position for that radiator.
10. Set the delay switches to the calculated switch positions.
Delay Measuring
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Signal delay calculation 2.2
TransmitterTransmitter
563 ns 339 ns
584 ns 350 ns
237 ns
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Signal delay calculation 2.2
To determine the delay switch position by delay measuring tool and the delay switch calculation tool the follow the next steps:
1. Start the calculation tool, Select system type, Fill-in the number of radiator(s) on each output
2. Disconnect the cable from a radiator output of the transmitter and connect this to a delay measurement tool.
3. Disconnect the cable from the first radiator in that trunk.
4. Measure the impulse response time (in ns) of the cable(s) between that transmitter and the radiator.
5. Enter this impulse response time in the calculation tool.
6. Reconnect the cable to the radiator and repeat steps 2 to 4 for the other radiators (started by the next radiator in that trunk).
Calculation tool
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Signal delay calculation 2.2
7. Reconnect the cable to the transmitter and repeat step 2 to 5 for the other radiator outputs of the transmitter.
8. When the cable signal delays are known, the delay switch calculation tool will calculate the delay switch positions automatically.
Calculation tool
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Signal delay calculation with more transmitters
When radiators in one multi purpose room are connected to two transmitters, an extra signal delay is added by:
Transmission from master transmitter to slave transmitter (cable signal delay).
Transmission through the slave transmitter.
Calculation tool
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Signal delay calculation with more transmitters
For calculating the delay switch positions for a system with a master-slave configuration, use the following procedure:
1. Calculate the cable signal delay for each radiator, using the procedures for a system with one transmitter.
2. Calculate the signal delay of the cable between the master and the slave transmitter in the same way as for cables between a transmitter and a radiator.
3. Add to the cable signal delay of the cable between the master and the slave, the delay of the slave transmitter itself: 33 ns. This gives the master-to-slave signal delay.
4. Add the master-to-slave signal delay to each radiator connected to the slave transmitter.
5. Determine the maximum signal delay.
Calculation tool
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Signal delay calculation with more transmitters
6. Calculate for each radiator the signal delay difference with the maximum signal delay.
7. Divide the signal delay difference by 33. The rounded off figure is the signal delay switch position for that radiator.
8. Set the delay switches to the calculated delay switch positions.
Calculation tool
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Tx SlaveTx Slave
R1
R3
R4
R5
R6
R2
R8
R10 R7
R9
20m
20m20m30m
20m
30m
20m
30m
20m
30m
Signal delay calculation with more transmitters
50m Tx MasterTx Master
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Signal delay calculation with more transmitters
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Radiation signal delay
A situation in which a radiation signal delay occurs.
For systems with more than four carriers, add one delay switch position per 10 meter difference in signal path length to the radiators which are closest to the overlapping coverage area.
In this Figure the signal path length difference is 12 meter. Add one delay switch position to the calculated switch position(s) for the radiator(s) under the balcony.
Calculation tool
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Transmitter menu structure
Setup 4
3Enquiry
2Monitoring
Fault Status 1
Transmitter Status 0
Back <
I&O Manual
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Transmitter menu structure
Setup 4
3Enquiry
2Monitoring
Fault Status 1
Transmitter Status 0
Back <
I&O Manual
2ASource and Volume
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Transmitter menu structure
Setup 4
3Enquiry
2Monitoring
Fault Status 1
Transmitter Status 0
Back <
3C FPGA Version
3B HWVersion
3A SerialNumber
3D SW Version
I&O Manual
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Defaults4P
Headphone on/off4O
Unit Name4M
Mini Radiator on/off4N
Sensitivity Aux. Right4K
Carrier Settings4G
Number of Channels4C
Transmission Mode4A
Transmitter menu structure
Setup 4
3Enquiry
2Monitoring
Fault Status 1
Transmitter Status 0
Back <
Network Mode4B
I&O Manual
Language List4E
Channel Name4F
Channel Quality4D
Carrier Overview4H
Sensitivity Aux. Left4J
Aux. Input Mode4I
Sensitivity Inputs4L
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Testing the reception quality
An extensive reception quality test must be done to make sure that the whole area is covered with IR radiation of adequate strength. Such a test can be done during installation and during the meeting:
Test during installation:
1. Check that all radiators are connected and powered up and that no loose cables are connected to a radiator. Switch the transmitter off and on. (needed for the auto signal equalisation)
2. Set the transmitter in the Test-mode. For each channel a different frequency test tone will be transmitted.
3. Set a receiver on the highest available channel and listen via the headphones to the transmitted test tone.
4. For testing all positions follow the instruction of chapter 1.6 of the Integrus ‘Installation and Operating Instructions’
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Testing the reception quality
Testing during the meeting:
1. Set a receiver in the Test-mode and select the highest available carrier. The quality of the received carrier signal is indicated on the display of the receiver.
The quality indication should be between 00 and 39 (good reception).
2. For testing all positions follow the instruction of chapter 1.6 of the Integrus ‘Installation and Operating Instructions’
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Installing and Operating a System
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