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GEX-P900DAB

7. GENERAL INFORMATION

7.1 IC

MN6577H

TC74LVX244FT

U2730B-BFS

SAA3500

TC74HC74AF

U2733B-CFS

GGC1312 (M5M51008BFP85VLL)

TC7WU04F

U2759B-AFL

SAA2502H

TC74HC00AF

U2750B-BFS

AK4321VFP

SM5844AF

PD5440A

TC74HC126AF

TC9271F

PQ30RV1

TC74HCT541AF

NJM1496M

PQ3RF23

TC7W00FU

UPC277G2

Pin Functions (MN6577H)

Pin No.

Pin Name

I/O

Function and Operation

1-5

D0-D4

Digital codes outputs D0 : LSB D9 : MSB

DVSS

Digital GND

DVDD

Digital power supply

8-12

D5-D9

Digital codes outputs D0 : LSB D9 : MSB

TEST2

L : Normal operation mode H : Test mode with built-in resistor

TEST1

L : Normal operation mode H : Test mode with built-in resistor

DVDD

Digital power supply

16,17

DVSS

Digital GND

DVDD

Digital power supply

Not used

LINV

L : Normal output mode H : Inverted output from D8-D0

with built-in resistor

MINV

L : Normal output mode H : Inverted output from MSB(D9)

with built-in resistor

CLK

Clock input Performs sampling at the trailing edge of the clock.
Outputs digital codes at the leading edge of the 2.5th clock.

N0E

Digital output enable H : Digital output(D0-D9, OVF, UNDF) high-impedance

L : Digital output(D0-D9, OVF, UNDF)

POWD

H : Power down mode L : Normal operation mode
In power down mode, the UNDF terminal changes to "H" and other digital outputs
set to "L".

25,26

AVDD

Analog power supply

AVSS

Analog GND

Not used

VRTS

When using 3.0V for VRT and 1.0V for VRB : connecting VRT to AVDD and

VRBS to VRB

When using 2.0V for VRT and 0V for VRB : connecting VRT to VRTS and VRB to

AVSS

VRT

TOP side reference voltage input

31-33

VR1-VR3

Intermediate reference potential (capacity connection to AVSS)

VRB

Bottom side reference voltage input

VRBS

When using 3.0V for VRT and 1.0V for VRB : connecting VRT to AVDD and
VRBS to VRB

When using 2.0V for VRT and 0V for VRB : connecting VRT to VRTS and VRB to

AVSS

36,37

Not used

AVDD

Analog power supply

VIN

Analog signal input

40-42

Not used

AVSS

Analog GND

DVSS

Digital GND

DVDD

Digital power supply

UNDF

Under flow output

OVF

Over flow output

Not used

Содержание CRT2193

Страница 1: ...10 00 Wheelock Place Singapore 238880 C PIONEER ELECTRONIC CORPORATION 1998 K FES JULY 1998 Printed in Japan ORDER NO CRT2193 HIDE AWAY DAB TUNER GEX P900DAB EW CONTENTS 1 SAFETY INFORMATION 2 2 EXPLODED VIEWS AND PARTS LIST 2 3 SCHEMATIC DIAGRAM 6 4 PCB CONNECTION DIAGRAM 24 5 ELECTRICAL PARTS LIST 28 6 ADJUSTMENT 35 7 GENERAL INFORMATION 37 7 1 IC 37 7 2 TEST MODE 52 7 3 EXPLANATION 54 7 3 1 CIR...

Страница 2: ...d safely repair complex products such as those covered by this manual Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty If you are not qualified to perform the repair of this product properly and safely you should not risk trying to do so and refer the repair to a qualified service technician 2 EXPLODED VIEWS AND PARTS LIST 2 1 PA...

Страница 3: ...e Bag CEG1190 11 Carton CHG3514 12 Contain Box CHL3514 13 Protector CHP2057 14 Protector CHP2058 15 Spacer CHW1713 16 Angle CNB2351 17 Antenna Assy CXB2841 18 Clamper CNV1343 Mark No Description Part No Mark No Description Part No NOTE Parts marked by are generally unavailable because they are not in our Master Spare Parts List Screws adjacent to mark on the product are used for disassembly PACKIN...

Страница 4: ...4 GEX P900DAB 2 2 EXTERIOR ...

Страница 5: ...Shield CNC7516 16 Transistor Q803 2SB945 17 IC IC804 NJM7805FA 18 Insulator CNM5804 19 Terminal CN802 CKF1059 20 Main Unit CWM5731 21 Screw BMZ26P060FMC 22 Nut CBN1026 23 Plug CN801 CKS 460 24 Connector CN222 CKS2104 25 Connector CN221 CKS2600 26 Connector CN262 CKS3409 27 Connector CN261 CKS3414 28 Shield CNC7512 29 Holder CNC7518 30 Antenna Jack CN401 CKX1059 31 Holder CNC7519 32 Holder CNC7517 ...

Страница 6: ... UNIT 1 3 Note When ordering service parts be sure to refer to EXPLODED VIEWS AND PARTS LIST or ELECTRICAL PARTS LIST SYSTEM CONTROL RF SECTION A 2 3 DIGITAL SECTION A 3 3 A1 3 A a A b A a A a A b A b A b A b A a A a Large size SCH diagram Guide page Detailed page A a ...

Страница 7: ...7 GEX P900DAB 5 6 7 8 A B C D 5 6 7 8 SELECTOR ISOLATOR MUTE POWER SUPPLY ASENSE BSENSE POWER SUPPLY CEK1033 1 4mH A1 3 A b ...

Страница 8: ...8 GEX P900DAB DIGITAL SECTION A 3 3 A 1 2 3 4 B C D 1 2 3 4 A a A b A a 1 3 ...

Страница 9: ...9 GEX P900DAB SYSTEM CONTROL RF SECTION A 2 3 5 6 7 8 A B C D 5 6 7 8 A a A b A a 1 3 ...

Страница 10: ...10 GEX P900DAB SELECTOR ISOLATOR MUTE POWER SUPPLY ASENSE BSENSE A 1 2 3 4 B C D 1 2 3 4 A a A b A b 1 3 ...

Страница 11: ...11 GEX P900DAB POWER SUPPLY ASENSE BSENSE POWER SUPPLY CEK1033 1 4mH 5 6 7 8 A B C D 5 6 7 8 A a A b A b 1 3 ...

Страница 12: ...B BAND3 RF AMP L BAND RF AMP ANT DUMP POWER SUPPLY PL L BAND DOWN CONVERTOR A 1 2 3 4 B C D 1 2 3 4 A2 3 3 2 MAIN UNIT 2 3 A a A b A a A a A b A b A b A b A a A a Large size SCH diagram Guide page Detailed page A a ...

Страница 13: ...13 GEX P900DAB 5 6 7 8 A B C D 5 6 7 8 2nd MIXER 1st MIXER L SL SAW FILTER NULL DETECTOR DIGITAL SECTION A3 3 A1 3 A2 3 A b ...

Страница 14: ...14 GEX P900DAB BAND3 RF AMP L BAND RF AMP ANT DUMP POWER SUPPLY PLL A 1 2 3 4 B C D 1 2 3 4 A a A b A a 2 3 ...

Страница 15: ...15 GEX P900DAB L BAND DOWN CONVERTOR 5 6 7 8 A B C D 5 6 7 8 A a A b A a 2 3 ...

Страница 16: ...16 GEX P900DAB 2nd MIXER 1st MIXER PLL SL SAW FILTER NULL DETECTOR A 1 2 3 4 B C D 1 2 3 4 A a A b A b 2 3 ...

Страница 17: ...17 GEX P900DAB DIGITAL SECTION A 3 3 A 1 3 5 6 7 8 A B C D 5 6 7 8 A a A b A b 2 3 ...

Страница 18: ...3 4 DAB DECODER VCXO 5V to 3 3V LEVEL TRANSITION CLOCK CONTROL 3 3V to 5V LEVEL TRANSITION CLOCK CONTROL RF SECTION A 2 3 A3 3 3 3 MAIN UNIT 3 3 A a A b A a A a A b A b A b A b A a A a Large size SCH diagram Guide page Detailed page A a ...

Страница 19: ...19 GEX P900DAB 5 6 7 8 A B C D 5 6 7 8 SELECTOR 48 44 1kHz CONVERSION DIGITAL INTERFACE TRANSMITER SELECTOR DAC OPT IN OUT A1 3 A3 3 A b ...

Страница 20: ...20 GEX P900DAB DAB DECODER RF SECTION A 2 3 A 1 2 3 4 B C D 1 2 3 4 A a A b A a 3 3 ...

Страница 21: ...21 GEX P900DAB VCXO 5V to 3 3V LEVEL TRANSITION CLOCK CONTROL 3 3V to 5V LEVEL TRANSITION CLOCK CONTROL A 5 6 7 8 A B C D 5 6 7 A a A b A a 3 3 8 ...

Страница 22: ...22 GEX P900DAB SELECTOR 48 44 1kHz CONVERSION DIGITAL INTERFACE TRANSMITER A 1 2 3 4 B C D 1 2 3 4 A a A b A b 3 3 ...

Страница 23: ...23 GEX P900DAB SELECTOR DAC OPT IN OUT A 1 3 5 6 7 8 A B C D 5 6 7 8 A a A b A b 3 3 ...

Страница 24: ...A MAIN UNIT 24 GEX P900DAB A 1 2 3 4 B C D 1 2 3 4 4 PCB CONNECTION DIAGRAM 4 1 MAIN UNIT A ...

Страница 25: ...MS 1 The parts mounted on this PCB include all necessary parts for several destination For further information for respective destinations be sure to check with the schematic diagram 2 Viewpoint of PCB diagrams Capacitor Connector P C Board Chip Part SIDE A SIDE B A ...

Страница 26: ...26 GEX P900DAB A 1 2 3 4 B C D 1 2 3 4 A MAIN UNIT A ...

Страница 27: ...27 GEX P900DAB 5 6 7 8 A B C D 5 6 7 8 SIDE B A ...

Страница 28: ...3SK223 Q 531 Transistor 2SC2712 Q 532 Transistor 2SA1162 Q 533 Transistor 2SC2712 Q 534 Transistor 2SC2712 Q 535 Transistor 2SC2712 Q 551 Transistor 2SC2712 Q 552 Transistor IMT2A Q 553 Transistor 2SK1067 Q 554 Transistor 2SC4099 Q 581 Transistor IMT2A Q 582 Transistor IMX2 Q 583 Transistor 2SC2712 Q 584 Transistor 2SA1162 Q 701 Transistor 2SC2712 Q 702 Transistor 2SC2712 Q 703 Transistor 2SC2712 ...

Страница 29: ...Inductor CTF1295 L 701 Inductor CTF1295 L 801 Choke Coil 1 4mH CTH1129 TH 407 Thermistor TN20 3E681K CF 531 Filter CTF1447 CF 551 SAW Filter CTF1450 X 181 Resonator 24 576MHz CWX2266 X 221 Crystal Resonator 11 2896MHz CSS1088 X 601 Resonator 10 00MHz CSS1428 X 701 Resonator 18 432MHz CSS1440 VR 391 Semi fixed 10kΩ B CCP1181 F 401 Filter CTF1452 F 351 Filter CTF1456 EF 351 CCG1086 EF 801 CCG1051 EF...

Страница 30: ...R 354 RS1 16S472J R 355 RS1 16S101J R 357 RS1 16S222J R 358 RS1 16S222J R 359 RS1 16S101J R 360 RS1 16S0R0J R 361 RS1 16S223J R 362 RS1 16S222J R 363 RS1 16S222J R 364 RS1 16S183J R 365 RS1 16S682J R 366 RS1 16S102J R 367 RS1 16S103J R 368 RS1 16S104J R 369 RS1 16S223J R 370 RS1 16S183J R 371 RS1 16S473J R 372 RS1 16S123J R 373 RS1 16S104J R 374 RS1 16S103J R 375 RS1 16S223J R 376 RS1 16S223J R 37...

Страница 31: ... R 567 RS1 16S471J R 568 RS1 16S270J R 569 RS1 16S102J R 570 RS1 16S102J R 581 RS1 16S272J R 583 RS1 16S681J R 585 RS1 16S152J R 586 RS1 16S151J R 587 RS1 16S682J R 588 RS1 16S471J R 589 RS1 16S103J R 590 RS1 16S473J R 601 RS1 16S470J R 602 RS1 16S470J R 603 RS1 16S470J R 604 RS1 16S473J R 606 RS1 10S473J R 607 RS1 16S102J R 608 RS1 10S472J R 609 RS1 16S102J R 610 RS1 16S102J R 611 RS1 10S473J R 6...

Страница 32: ...C 190 CCSQCH150J50 C 191 CCSQCH150J50 C 192 CCSQCH150J50 C 221 CCSRCH150J50 C 222 CCSRCH150J50 C 223 CKSRYB104K16 C 224 CKSRYB104K16 C 225 CKSRYB104K16 C 226 CKSRYB104K16 C 227 CKSRYB103K25 C 228 CCSRCH150J50 C 229 CKSRYB222K50 C 230 CKSRYB102K50 C 231 CKSRYB102K50 C 232 CKSRYB222K50 C 233 CKSQYB104K16 C 234 CKSQYB104K16 C 235 CKSQYB104K16 C 261 CCSRCH221J50 C 262 CCSRCH221J50 C 263 CKSRYB103K25 C...

Страница 33: ... 495 CKSRYB102K50 C 496 CKSRYB102K50 C 497 CCSRCH121J50 C 498 CCSRCH820J50 C 499 CCSRCH820J50 C 501 CKSRYB102K50 C 502 CKSRYB102K50 C 503 CCSRCH4R0C50 C 504 CKSRYB102K50 C 506 CCSRCH101J50 C 507 CCSRCH101J50 C 508 CKSRYB102K50 C 509 CKSRYB104K16 C 510 CCSRCH101J50 C 512 CCSRCK1R0C50 C 514 CCSRCH820J50 C 515 CCSRCH101J50 C 516 CKSRYB102K50 C 517 CCSRCK1R0C50 C 518 CCSRCK1R0C50 C 519 CCSRCH820J50 C ...

Страница 34: ...04K16 C 802 CEAS220M16 C 803 CKSRYB104K16 C 804 CEAS220M16 C 805 CEAS220M16 C 806 CKSQYB104K25 C 807 CKSRYB104K16 C 808 CEAS220M10 C 809 CKSRYB104K16 C 810 CEAS220M10 C 811 CEAS220M16 C 812 CKSQYB104K25 C 813 CKSRYB104K16 C 814 CEJA100M16 C 815 CKSRYB104K16 C 816 CEAS220M16 C 817 CKSQYB103K25 C 818 CEZA471M16 C 831 CKSRYB104K16 C 832 CSZST220M16 C 833 CKSRYB103K25 C 834 CKSRYB103K25 C 835 CKSRYB10...

Страница 35: ... P900DAB with an IPBUS cable 2 Set the power to ON and enter DAB Service mode 3 Set frequency to 13 F 4 Check R556 on the side where P1 is located the side not in contact with D551 with DMM 1 so that VT tuning voltage can be measured Adjust air core coil L553 so that VT is 7 00 V 5 Set frequency to 5 A and confirm that VT is within the range from 1 2 to 1 7 V L473 Pin 7 DMM 2 L503 L475 L477 L505 L...

Страница 36: ...djust the air core coil L505 behind FET as well as the air core coil L507 behind L505 Repeat these adjustment steps several times to set SLEVEL voltage to maximum Confirmation of Operation Equipment required Head unit RF SG Capable of outputting DAB signals up to 1 5 GHz IQ modulation function is required DAB encoder e g KENWOOD DAB 3801 1 Confirming Operation 1 Confirming BAND 3 Set the encoder t...

Страница 37: ...trailing edge of the clock Outputs digital codes at the leading edge of the 2 5th clock 23 N0E I Digital output enable H Digital output D0 D9 OVF UNDF high impedance L Digital output D0 D9 OVF UNDF 24 POWD I H Power down mode L Normal operation mode In power down mode the UNDF terminal changes to H and other digital outputs set to L 25 26 AVDD I Analog power supply 27 AVSS I Analog GND 28 NC Not u...

Страница 38: ...tection 23 fso O Frame sync output low indicates DAB null symbol position 24 AGC LOCK Not used 25 AGCW Not used 26 GND4 Digital ground 27 OCLK O Output data clock negative edge indicates new data 28 VDD2 Voltage supply 3V 29 OIQ O Output I or Q select signal or frame trigger if OIQ high 30 ocir I Output select baseband if OIQ 1 CIR if OIQ 0 31 oen I OUT enable if low 32 39 OUT 0 7 O Baseband or ch...

Страница 39: ...ntinuous or SFCO clock burst 58 rde I RDI output enable if low 59 RDO O Receiver data interface biphase output 60 GND6 Digital ground 61 wr O Write data to RAM 62 68 A 17 11 O Address outputs external RAM 69 RD O Read data from RAM 70 CS O Chip select 71 78 D 7 0 I O Data I O external RAM 79 VDD4 Voltage supply 3V 80 GND7 Digital ground 81 91 A 10 0 O Address outputs external RAM 92 TCO I Connect ...

Страница 40: ...IGITAL TO ANALOG CONVERTER PHASE COMP DIVIDER SPDIF ENCODER 1 2 3 4 5 6 7 8 9 10 11 33 32 31 30 29 28 27 26 25 24 23 12 13 14 15 16 17 18 19 20 21 22 44 43 42 41 40 39 38 37 36 35 34 INPUT INTERFACE DEQUANTIZATION AND SCALING DECODING CONTROL DEMULTI PLEXER SYNTHESIS SUB BAND FILTER CLOCK GENERATOR FSCLK SCK SD WS TRST SPDIF CCLK CDATA CMODE INT RESET PHDIF TCK FSCLKIN X22IN X22OUT GND2 MCLK24 VDD...

Страница 41: ...age 1 19 CDSY I Coded data byte or frame sync input 20 CDVAL I Coded data valid flag input 21 TMS I Boundary scan test mode select input 22 REFCLK I PLL reference clock input 23 PHDIF O PLL phase comparator output 24 TCK I Boundary scan test clock input 25 FSCLKIN I Sample rate clock input 26 X22IN I 22 579 MHz clock oscillator input or signal input 27 X22OUT O 22 579 MHz clock oscillator output 2...

Страница 42: ...42 GEX P900DAB AK4321VFP TC74HC126AF TC74HCT541AF ...

Страница 43: ...900DAB TC74HC74AF TC7W00FU VCC 1Y 2B 2A 8 7 6 5 1A 1B 2Y GND 1 2 3 4 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 1G 1A1 2Y4 2Y2 2Y1 GND 2A1 1Y4 2A2 1Y3 2A3 1Y2 2A4 1Y1 2G Vcc 1A4 1A2 2Y3 1A3 TC74LVX244FT ...

Страница 44: ... INTERFACE MODE SWITCH CLOCK SELECT TIMING CONTROLLER INPUT SIDE DIVISION 12 13 14 15 16 17 18 19 20 21 22 44 43 42 41 40 39 38 37 36 35 34 11 10 9 8 7 6 5 4 3 2 23 24 25 26 27 28 29 30 31 32 33 1 FORMAT CONTROLLER DIRECT MUTE OUTPUT SIDE DIVISION OPERATIONAL CIRCUIT DE EMPHASIS OPERATIONAL ATT FILTER OPERATIONAL OUTPUT OPERATIONAL MCOM DMUTE1 DMUTE2 VDD1 VDD2 MODE MDT FSI1 MCK FSI2 MLEN DEEM1 MLE...

Страница 45: ...ATOR SERIAL INTERFACE BIFAZEMARK MODULATOR CATEGORY CODE REGISTER 1 2 3 4 5 6 7 8 9 10 11 12 28 27 26 25 24 23 22 21 20 19 18 17 13 14 16 15 45 GEX P900DAB UPC277G2 1 3 2 OUT 1 Ii 1 IN 1 GND IN 2 Ii 2 OUT 2 V 4 5 6 7 8 TC9271F NJM1496M 1 2 3 4 5 6 7 14 13 12 11 10 9 8 SIGNAL INPUT GAIN ADJ GAIN ADJ NC CARRIER INPUT NC CARRIER INPUT NC OUTPUT NC V SIGNAL INPUT BIAS OUTPUT ...

Страница 46: ...er input inverted 17 TH Threshold voltage of comperator 18 AGC I O Charge pump output of comperator AGC input for amplifier and mixer 19 IF O Intermediate frequency output 20 VCC3 Voltage supply 21 24 GND Ground 25 NRF I RF input inverted 26 RF I RF input 27 S I Control input 28 VCC4 Voltage supply U2730B BFS NC C VCC1 VCC2 TMD TRD CD TH AGC PD PLCK REF NREF IF VCC3 GND GND GND GND NRF RF S VCC4 G...

Страница 47: ...12 SWD O Switching output open collector 13 SWE O Switching output open collector 14 SWF O Switching output open collector 15 SWG O Switching output open collector 16 SWH O Switching output open collector 17 NRF I RF input inverted 18 RF I RF input 19 GND Ground 20 VS Supply voltage U2733B CFS SWITCHES 7 BIT LATCH MUX MUX FREQUENCY DOUBLER x2 REFERENCE COUNTER FRACTIONAL N CONTROL PROG 13 BIT COUN...

Страница 48: ... 7 NC Not used 8 IF2OUT O IF2 output 9 11 NC Not used 12 13 LO Local oscillator 14 15 NC Not used 16 THRIF I AGC threshold for IF amplifier 17 DC DC level 18 VREF Reference voltage 19 BG Bandgap 20 VS Supply voltage 21 22 NC Not used 23 GND Ground 24 IF1IN I IF1 input U2759B AFL 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 BANDGAP IF1IN THRPRE NC NC NC NC NC LO LO NC NC THRIF DC ...

Страница 49: ...GC mode selection 15 SLI AGC mode selection 16 17 SWI1 2 I Differential input of SAW driver 18 19 MXO1 2 O Differential mixer output 20 VS Supply voltage 21 GND GND 22 23 MBI2 1 I Differential input of mixer B 24 25 MAI2 1 I Differential input of mixer A 26 GND GND 27 28 LO2 1 O Differential output of LO for PLL U2750B BFS CP TH BDSW B2VC C2VC GND VS SWO1 SWI2 MXO1 SWO2 NWAGC SL1 SWI1 MXO2 VS GND ...

Страница 50: ...ut 30 IPOUT O IP BUS output KEYDISP output 31 L3OUT O L3BUS data output 32 L3IN I L3BUS data input 33 L3CLK O L3BUS clock output 34 L3MODE O L3BUS mode output 35 TxD O 36 AICDT I AIC data input 37 AICCLK I AIC clock input 38 AICWIN I AIC window input 39 int I SAA2502 INTERRUPT 40 icreset O IC reset output SAA3500 41 OPTEN O Optical output enable 42 MPEGRES O IC reset output SAA2502 43 DABPW O DAB ...

Страница 51: ...e 81 88 MOUT 7 0 Not used 89 NC Not used 90 NULLSEL O NULL detect circuit select 91 I2 C_DT O I2 C data 92 I2 C_CK O I2 C clock 93 94 NC Not used 95 ANTSENS I Antenna terminal short detect 96 AVSS A D power supply 97 SL I Signal level input 98 VREF A D reference voltage input 99 AVCC A D power supply 100 AGCW I AGC window input PQ30RV1 VIN VO GND VADJ 1 2 3 4 THERMAL PROTECTOR PROTECTOR REFERENCE ...

Страница 52: ...CH 1 key is pressed SAA 3500 communications checking display After 2 seconds or when the CH 1 key is pressed MPEG IC communications checking display After 2 seconds or when the CH 1 key is pressed Test display Press the CH 1 key Returns to the normal display CH 2 Switches services Same as the Service UP key CH 3 ARC ON OFF Switches between ON and OFF of ARC Other keys are invalid Display in Test m...

Страница 53: ...h column 0 Not identified 1 4 Transmission mode DAB transmission mode AFC detection 6th column 0 AFC is not synchronized 1 AFC is synchronized MPEG signal synchronous 7th column 0 MPEG decoder is not synchronized 1 MPEG decoder is synchronized MPEG signal error 8th column 0 Normal 1 Error in MPEG data ...

Страница 54: ...ted attention along with development of FFT technology In DAB the system encodes and transmits signal 1 Encoding is error correction using convolutional code Compared with codes used in CDs block code convolution al code is more effective to handle random errors Generally it is called Viterbi decoding 2 DAB signal requires wide band 1 54 MHz and is given priority to be allocated to 12 channels of ...

Страница 55: ...corrects such part with error correction 1 Frequency interleave 2 Time interleave Portion containing error caused by multipath etc digital data 384ms Changes burst error to random error by the time axis Corrects error by Viterbi decoding Received signal 1 54 MHz Reallocation of frequency after FFT Distorted portion by multipath etc Disperses distorted carriers by frequency interleave to change the...

Страница 56: ...oints 1 ms Number of samples required for FFT 512 points 250 µs Guard interval The time of guard interval depends on modes Different time of guide interval is used for transmitting frequency receiving speed vehicle speed etc S1 S2 S1 S2 Actual DAB signal Interference between different symbols effect of delay Time required for FFT 1 ms Guard interval 250 µs Received DAB signal S1 S2 Time required f...

Страница 57: ...fferent from FM all transmitting antennas use the same frequency in SFN Thus completely muteless status can be achieved in NF 2 SFN receives frequency from several antennas simultaneously Thus network gain may be obtained by several dBs Viewing from the receiver both SFN and mutipath behave in the same manner antenna 1 102 2MHz antenna 2 89 6MHz antenna 3 106 8MHz antenna 1 225MHz antenna 3 225MHz...

Страница 58: ...n be transmitted 3 We are planning to transmit navigation related data such as DGPS and TMC in the future The DAB signal itself has a simple system to detect its own position TII Transmitter Identification Information implying a possibility of sim plified navigation Actual selection of service using a DAB receiver will be as the illustration shown below a large display is required Currently use of...

Страница 59: ...59 GEX P900DAB 7 3 2 BLOCK DIAGRAM A ...

Страница 60: ...nna Unit 2 Antenna Input 4 Power Supply 6 IP BUS Input Blue 7 Not used Optical Output Black 8 Not used Optical Input Blue 9 IP BUS cable 10 To IP BUS Input Blue 11 Multi CD player sold separately 14 Orange To terminal always supplied with power regardless of ignition switch position 15 Black ground To vehicle metal body 13 Fuse holder ...

Страница 61: ...e in the same way with the Steering Remote Controller supplied with the Head Unit For details refer to the Head Unit s Operation Manual Buttons 1 6 button button BAND button FUNCTION button TUNER DAB button PGM button DISPLAY button button PTY button button PTY button button TA button button SOURCE OFF button DISPLAY button ...

Страница 62: ... switch the sources OFF hold down the SOURCE OFF button for 1 sec ond or more Remote Controller Press the TUNER DAB button and select DAB as follows Tuner DAB Digital Audio Broadcasting OFF DAB READY Basic Operation Basic Operation of DAB 1 Select DAB When you first switch to DAB Auto Seek is performed to find the highest Ensemble frequency Auto Seek is also performed in the same way each time you...

Страница 63: ...nt is found Sound of that Service Component is output When a Service Component is not found Priority is given to the first Service After it is selected sound of that Service s Primary Service Component is output Hold for 0 5 seconds Hold for 0 5 seconds Basic Operation Specifications General Power source 14 4 V DC 10 8 15 1 V allowable Grounding system Negative type Max current consumption 0 6 A D...

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