dataword 0000 æ codeword 0000000 æ corrupted 1100001 æ s2s1s0 100 change q2 table 10 5 æ corrected codeword 1100101æ dataword 1100 the dataword is found but it is incorrect c 7 4 cannot correct three errors
bài giải bài tập truyền số liệu
... incorrect C( 7, 4) cannot correct two errors 3 d Dataword: 0000 → Codeword: 00000 00 → Corrupted: 1 100 0 01 → s2s1s0 = 100 Change q2 (Table 10. 5) → Corrected codeword: 1100 1 01→ dataword: 1100 The dataword ... The dataword is correctly found b Dataword: 0111 → Codeword: 01 1100 1 → Corrupted: 00 1100 1 → s2s1s0 = 011 Change b2 (Table 10. 5) → Corrected codeword: 01 1100 1 → dataword: 0111 The dataword is correctly ... correctly found c Dataword: 1111 → Codeword: 1111111 → Corrupted: 0111 110 → s2s1s0 = 111 Change b1 (Table 10. 5) → Corrected codeword: 0101 110 dataword: 0101 The dataword is found, but it is incorrect...
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Xe ô tô BMW X5 E70 SM 01a_E70 Introduction
... 3 45 / 24 Air resistance (coefficient of drag) cd 0. 341 0. 351 Top speed (electronically limited) 130 150 Front tires 255 /55 R18 H XL RSC 255 /55 R18 H XL RSC Rear tires 255 /55 R18 H XL RSC 255 /55 ... 4, 8 54 4, 6 67 Width (mm) 2,1 97 2,180 Height (mm) 1 ,76 6 1 ,70 7 Wheelbase (mm) 2,933 2,820 Track width, front (mm) 1, 644 1 , 57 6 Track width, rear (mm) 1, 650 1 , 57 6 E70 Introduction Technical Data Specification ... Specification Number of doors/seats X5 3.0i SAV X5 4. 8i N52B30O1 N62B48O1 5/ 5 units 5/ 5 Vehicle length/width/height, unladen mm 4, 8 54 /1,933/1 ,72 8 4, 8 54 /1,933/1 ,72 8 Wheelbase/turning circle mm/m...
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Xe ô tô BMW X5 E70 SM 01b_E70 Glovebox
... voltage The unlocking mechanisms (3 and 4) of the glovebox receive this signal for approximately 100 ms Each unlocking mechanism features an electronic circuit, which controls and monitors the unlocking ... electronic circuit The unlocking-mechanism electronic circuit evaluates the signal from the glovebox button The glovebox light is switched on as soon as the signal from the junction-box ECU changes ... unlocking-mechanism electronic circuit recognizes when the junction-box ECU transmits the signal for unlocking The unlocking drive (11) is activated once synchronization has been completed The unlocking...
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Xe ô tô BMW X5 E70 SM 02a_E70 Powertrain
... characteristic of the multi-disc clutch can vary slightly due to the mechanical tolerances in the production process After measuring the actual locking power on the clutch test rig, a resistor is fitted ... resistance and correspondingly selects the optimum characteristic map for the installed transfer box To facilitate accessibility, the coding resistor is no longer fitted on the casing of the worm ... a chain to the propeller shaft to the front axle and apportioned by a multi-disc clutch The torque transmission efficiency of the multi-disc package has remained the same compared to the ATC500...
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Xe ô tô BMW X5 E70 SM 02b_E70 Gasoline Engines
... (rpm) 2 35/ 320 6100 261/ 350 6300 Torque (Nm) at engine speed (rpm) 44 0 3600 4 75 350 0 Compression ratio 10. 0 10. 5 Valves/cylinder 4 Fuel type (RON) 98 98 Firing order 1 -5- 4- 8-6-3 -7- 2 1 -5- 4- 8-6-3 -7- 2 ... plausibility of the signal A new plug connector ensures the greatest possible contact quality In this connector, the contact force that acts on the pins is decoupled from the plug-in force In this ... required cooling capacity but rather the restricted space conditions For this reason, the 200 W Pierburg pump is not used as is standard on the N52K engine 22 E70 Gasoline Engines Cooling Circuit N62B48O1...
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Xe ô tô BMW X5 E70 SM 02c_E70 Transmissions
... to 4 .7 bar (0 mA = bar, 70 0 mA = 4 .7 bar) • Supply voltage 12 V • Resistance 5. 05 Ohm (at 20 C) EDS with rising characteristic Electronic pressure control valves 4, 5, 6: Yellow cap, rising characteristic ... downshift characteristic 2nd downshift characteristic 3rd downshift characteristic Accelerator pedal movement Multiple downshift Dynamics boost 25 E70 Transmissions Shift Speed Characteristics The ... transmission fluid is cold: Electronic Pressure Control Valves (EDS) EDS with rising characteristic Electronic pressure control valves 1, 2: Orange cap, rising characteristic Technical data: • Pressure...
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Xe ô tô BMW X5 E70 SM 03a_E70 Voltage Supply and Bus
... FD Rear Compartment Display CA Comfort Access FKA Rear Compartment Heating and A /C CAS Car Access System FLA High Beam Assistant CCC Car Communication Computer FRM Footwell Module CDC CD Changer ... plugged into the PCB with a connection in the plug connector The other plug connector is connected directly with the connectors on the wiring harness The advantages of this design modification are: ... In the E70, the MOST bus is used for the components in information/communication systems The CCC, or the CHAMP is used as the master control unit Other bus users may be: • CD changer/DVD changer...
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Xe ô tô BMW X5 E70 SM 03b_E70 Car Access System 3
... for the data exchange The cryptic code provides the enable to start the engine The Car Access System is backwards compatible with the Car Access System This means the functions of the Car Access ... transmission control The electronic transmission control deciphers and checks these individual codes If the check is successful, the gearbox control unit will enable the gearbox functions The electronic ... control 14 E70 Car Access System Control Unit Replacement A defect in the control units belonging to the EWS represents a challenge for the Service technician Since a defective control unit cannot...
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Xe ô tô BMW X5 E70 SM 03c_E70 Energy Management
... Management Closed-circuit Current The closed-circuit current on the E70 is approximately 22 mA on fully equipped US vehicles A check control message is sent as from a closed-circuit current value ... 30g_f relay is activated by the junction box control unit and switches off the connected electric loads if a fault occurs The terminal 30g_f relay is a bistable relay Each switching status is retained ... closed circuit current progression in the E70 in connection with the various operating modes in the vehicle electrical system The actual current values change depending on the vehicle equipment configuration...
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Xe ô tô BMW X5 E70 SM 04a_E70 Chassis Dynamics
... force takes effect, the full lateral cornering force can be established in accordance with the radius of the Kamm's circle In the same way, the full braking or acceleration force can be established ... about the z axis • E70 vertical dynamics systems - The following essentially act upon the vertical wheel forces and the wheel contact forces: – VDC – EHB – ARS E70 Chassis Dynamics This affects the ... Distance for the center of gravity from the road surface Wheelbase Track width The position of the center of gravity in the vehicle, its distance from the road surface, the wheelbase and the track width...
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Xe ô tô BMW X5 E70 SM 04b_E70 Lateral Dynamics Systems
... is moved, the code disc turns within the optical sensor Code disc Optical sensor Code Disc The code disc is black and has a pattern of lines This pattern consists of two continuous lines on the ... the front left of the vehicle The AS control unit is integrated into the vehicle electrical system by the PT-CAN and the F-CAN The AS control unit calculates the control signals for the AS actuating ... guide is fixed to the circuit board with two screws The LED and light guide form the optical sensor together with the line camera Line Camera The line camera is fitted under the code disc The line...
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Xe ô tô BMW X5 E70 SM 04c_E70 Vertical Dynamics Systems
... force characteristic curves • Communications media The VDM control unit is connected to the PT-CAN, F-CAN and FlexRay; the EDC satellite control units are only connected to the FlexRay 35 E70 ... axle counteract the rolling moment [M] Using this approach, the roll angle is compensated for in accordance with the characteristic curve specified in the control unit The roll angle is fully compensated ... the EDC-K already fitted on the E 65 Like EDC-K, VDC is notable for its continually adjustable dampers whereby, within certain limits, as many damping characteristic curves (damping force - piston...
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Xe ô tô BMW X5 E70 SM 04d_E70 Longitudinal Dynamics Systems
... sensor in the hydraulic unit DSC Control Unit The DSC control unit can be replaced individually The 47 - pin connector connects the DSC control unit to the engine wiring harness 23 E70 Longitudinal ... sensor The code disc is connected by means of a driver to the steering wheel The code disc turns within the optical sensor as the steering wheel is turned Code Disc The code disc is black and ... in addition to the service brake, one of the main advantages of the EMF is that it enables dynamic braking with DSC control Dynamic Cruise Control (DCC) The dynamic cruise control is a conventional...
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Xe ô tô BMW X5 E70 SM 05a1_E70 Central Locking
... units The electronic vehicle immobilizer is also used in connection with the Car Access System The Car Access System is backwards compatible with the Car Access System Therefore, the Car Access ... signal, the Car Access System initiates activation of the central locking The Car Access System is the central control unit for the central locking The junction box control unit (26) executes the ... automatic soft close drive unit via a microswitch for the tailgate The microswitch is located in the tailgate lock The junction box control unit evaluates the microswitch The microswitch signal...
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Xe ô tô BMW X5 E70 SM 05a2_E70 Power Windows
... window switch Explanation Resistance-coded switch Control Units Car Access System The Car Access System is the central control unit for opening and closing the windows Therefore, it issues the enable ... position The footwell module sends the request via the K-CAN On conclusion of the corresponding check, the Car Access System initiates the comfort opening or closing procedure With Comfort Access ... overpull the switch again as the anti-trap mechanism is still active the first time the switch is overpulled Overpulling the power window switch the second time within seconds closes the window with...
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Xe ô tô BMW X5 E70 SM 05a3_E70 Comfort Access
... Comfort Access system in the E70 X5 • Locate all the components used in the system E70 Comfort Access Introduction Using Comfort Access the customer can unlock and open the vehicle without active ... MHz to the remote control receiver to obtain authentication The Car Access System checks the authentication of the ID transmitter Following successful authentication, the Car Access System issues ... locking The junction box control unit activates the central locking drive units 16 E70 Comfort Access Special Functions The Comfort Access additionally features the special functions described in the...
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Xe ô tô BMW X5 E70 SM 05a4_E70 Wipe-Wash System
... switch The wiper switch is an integral part of the steering column switch cluster SZL Wiper Switch The following functions are switched on with the wiper switch: • Intermittent wipe without the ... switch cluster The steering column switch cluster sends the signal on the F-CAN to the dynamic stability control From the dynamic stability control, the signal is made available on the PT-CAN The ... when the wiper switch on the steering column stalk (12) is operated is sent from the steering column switch cluster SZL (13) via the chassis CAN to the dynamic stability control DSC (4) The dynamic...
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Xe ô tô BMW X5 E70 SM 05a5_E70 Panorama Glass Sunroof
... is the precondition for the execution of the emergency closing function It is necessary to release and press the button again, as the first time the button is pressed the anti-trapping protection ... using the outside door handle with Comfort Access The sensitive area must be touched for a long time to launch the comfort closing process Only then will the roof function center execute the comfort ... Explanation Car Access System 3 Junction box control unit Footwell module Roof function center E70 Panorama Glass Sunroof Control Units Car Access System The Car Access System issues the release...
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Xe ô tô BMW X5 E70 SM 05a7_E70 Seats
... Seat Section The small seat section is monitored by a Micro-switch, since there is no belt integrated in the backrest The Micro-switch is situated on the mechanical lock on the inside of the seat ... position/backrest position Junction-Box ECU The junction-box ECU is the monitoring electronic control unit In the event of an incorrectly locked seat, the junction-box ECU no longer has ground contact ... backrest is in the fully set-down in position and locked All the switches are closed when the seat section is correctly locked One of the switches of a locked seat is always open or closed The...
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