5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
ROSS
MD780 U1
DAC
5VA
3V3D
MOD_H
MOD_L_RFCS
DAC_DIN
DAC_SCLK
DAC_FS
TV_APC
Final_bias
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C
516
100P
C
516
100P
R566
0
R566
0
C500
33p
C500
33p
R513
100K
R513
100K
C501
330p
C501
330p
R512
10k
R512
10k
C513
1000P
C513
1000P
R567
0
R567
0
C510
100P
C510
100P
C512
0.1u
C512
0.1u
C506
0.01uF
C506
0.01uF
R
529
33K
R
529
33K
R500
100K
R500
100K
R505
0
R505
0
R502 1K
R502 1K
RN500 100*4
RN500 100*4
1
2
3
4
5
6
7
8
C523
NC
C523
NC
U500
U500
DV
DD
1
PD
2
LD
AC
3
DIN
4
SC
LK
5
CS
6
FS
7
DG
ND
8
AGN
D
9
RE
FINCD
10
OU
T
D
11
OU
T
C
12
OU
T
B
13
OU
T
A
14
RE
FINA
B
15
AVD
D
16
C507
0.01uF
C507
0.01uF
c508
10uF/16V
c508
10uF/16V
R528
68K
R528
68K
C524
NC
C524
NC
C
518
100P
C
518
100P
R506
10K
R506
10K
C502
3300p
C502
3300p
R504
1K
R504
1K
R503
1K
R503
1K
C511
10uF/10V
C511
10uF/10V
C521
NC
C521
NC
R510
10k
R510
10k
C504
NC
C504
NC
C505
NC
C505
NC
R509
10k
R509
10k
R564
0
R564
0
C509
0.1u
C509
0.1u
C514
0.1u
C514
0.1u
C522
NC
C522
NC
C
515
0.
1u
C
515
0.
1u
R565
0
R565
0
R507
0
R507
0
R501
10K
R501
10K
R514
100K
R514
100K
C503
1800PF
C503
1800PF
C
517
100P
C
517
100P
MD78X/MD78XG Schematic Diagram (DAC Circuit)
63
Содержание MD78X
Страница 1: ...DIGITAL MOBILE RADIO SERVICE MANUAL...
Страница 5: ...UHF1 400 470 MHz...
Страница 14: ...UHF1 400 470 MHz Exploded View and Packing Guide 7 3 2 Packing Guide...
Страница 56: ...UHF1 400 470 MHz Interface Definition 49 Pin No Name Description 39 GND Grounding 40 PWB_IN Power On Off signal...
Страница 62: ...55 9 PCB View MD78X MD78XG PCB View Front Panel Top Layer...
Страница 63: ...56 MD78X MD78XG PCB View Front Panel Bottom Layer...
Страница 64: ...MD78X MD78XG PCB View Main Board Top Layer 57...
Страница 65: ...MD78X MD78XG PCB View Main Board Bottom Layer 58...
Страница 111: ...UHF2 450 520 MHz...
Страница 120: ...UHF2 450 520 MHz Exploded View and Packing Guide 7 3 2 Packing Guide...
Страница 167: ...54 9 PCB View MD78X MD78XG PCB View Front Panel Top Layer...
Страница 168: ...55 MD78X MD78XG PCB View Front Panel Bottom Layer...
Страница 169: ...MD78X MD78XG PCB View Main Board Top Layer 56...
Страница 170: ...MD78X MD78XG PCB View Main Board Bottom Layer 57...
Страница 216: ...UHF3 350 400 MHz...
Страница 225: ...UHF3 350 400 MHz Exploded View and Packing Guide 7 3 2 Packing Guide...
Страница 272: ...54 9 PCB View MD78X MD78XG PCB View Front Panel Top Layer...
Страница 273: ...55 MD78X MD78XG PCB View Front Panel Bottom Layer...
Страница 274: ...MD78X MD78XG PCB View Main Board Top Layer 56...
Страница 275: ...MD78X MD78XG PCB View Main Board Bottom Layer 57...
Страница 321: ...UHF5 806 941 MHz...
Страница 330: ...UHF5 806MHz 941MHz Exploded View and Packing Guide 7 3 2 Packing Guide...
Страница 376: ...53 9 PCB View MD78X MD78XG PCB View Front Panel Top Layer...
Страница 377: ...54 MD78X MD78XG PCB View Front Panel Bottom Layer...
Страница 378: ...55 MD78X MD78XG PCB View Main Board Top Layer...
Страница 379: ...56 MD78X MD78XG PCB View Main Board Bottom Layer...
Страница 414: ...VHF 136 174 MHz...
Страница 423: ...VHF 136MHz 174MHz Exploded View and Packing Guide 7 3 2 Packing Guide...
Страница 468: ...PCB 52 9 PCB View MD78X MD78XG PCB View Front Panel Top Layer...
Страница 469: ...PCB 53 MD78X MD78XG PCB View Front Panel Bottom Layer...
Страница 470: ...MD78X MD78XG PCB View Main Board Top Layer 54...
Страница 471: ...PCB 55 MD78X MD78XG PCB View Main Board Bottom Layer...