114
NX-820
SCHEMATIC DIAGRAM /
原理图
X57-824 10/10
AT
AU
AV
AW
AX
TX-RX UNIT (X57-8240-13)
Dual BUS Buffer
33A_2
FWD
REV
.
L 1 1 7
D104
HSB88AS-E
L114
9.5T
D105
HSB88AS-E
D 1 0 6
D Z 2 J 0 5 6 ( M )
L 1 1 6
.
C184
C158
4 7 0 p
C161
4p
C167
4p
C 1 6 5
4 7 0 p
C157
1000p
C187
1000p
C188
1000p
D 1 0 9
R B 5 2 0 S M - 3 0
D 1 0 8
R B 5 2 0 S M - 3 0
R148
0
R145
10
R160
0
R154
0
R 1 5 8
3 3 k
R161
100k
R143
100k
R140
150
R136
150
R159
0
R157
33k
R 1 5 2
1 k
R142
0
R139
150
R134
120
R176
220
R180
33k
R179
33k
.
R177
0
.
R178
0
.
R 2
C193
33p
C194
10p
L118
22n
C191
22p
C192
12p
C197
F o r w a r d P o w e r
R e v e r s e P o w e r
C O U P P L E R
BLC
MKEYI
MBL
SCK0
LCDCS
SDO0
HOOK_RXD1
EMG
TXD2
GLED
TXD1
BUCNT2
MKEYO
BUCNT1
BLED
RLED
50C
50C
SDI0
SB
5V_TXD2
/PTT
33M
POWER
.
I C 5 1 1
TC74VHCT244AFK
1
1G
2
1A1
3
2Y4
4
1A2
5
2Y3
6
1A3
7
2Y2
8
1A4
9
2Y1
10
GND
11
2A1
12
1Y4
13
2A2
14
1Y3
15
2A3
16
1Y2
17
2A4
18
1Y1
19
2G
20
VCC
.
I C 5 0 9
TC7WH126FU-F
1
G1
2
A1
3
Y2
4
GND
1
G1
2
A1
3
Y2
4
GND
5
6
7
8
Y1
G2
VCC
.
D 5 0 2
D B 2 S 3 1 0
.
D 5 1 1
D B 2 S 3 1 0
.
IC716
TC7WT126FU-F
.
CP508
100kX4
C N 5 3 0
.
CP512
100kX2
.
CP511
100X2
.
C P 5 1 5
100X2
.
CP516
100X4
.
CP501
100kX4
.
C611
47p
.
C 6 0 3
1 0 0 p
.
C 6 0 4
1 0 0 0 p
.
C 6 0 2
0 . 0 1 u
.
C609
47p
.
C610
47p
.
C612
100p
.
C 6 1 3
0 . 0 1 u
.
C 6 0 5
1 0 0 p
.
C 6 0 7
1 0 0 p
.
C614
1 0 0 p
.
C615
1 0 0 p
.
C616
1 0 0 p
.
C617
1 0 0 p
.
C618
1 0 0 p
.
C620
1 0 0 p
.
C650
0 . 1 u
.
C 6 5 1
0 . 1 u
.
C 6 5 2
0 . 1 u
.
R 6 1 7
0
.
R 6 1 3
1 0 k
.
R612
1k
.
R610
4 7 0 k
.
R 6 1 5
4 . 7 k
.
R 6 8 4
4 7 k
.
R686
22k
.
R 6 1 6
4 7 0 k
1k
.
R688
1k
.
R690
.
R 6 1 4
0
.
C 6 2 1
1 0 0 0 p
.
C661
4 7 p
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
.
C581
0.01u
L C D C E
L C D C L
G N D
H O O K
P T T
M K E Y
P O W E R
L C D D I
G N D
G N D
L C D D O
M I C
M E
M E
S B
S P +
S P +
S P -
S P -
S P +
S P -
B L C
M B L
E M G
G N D
G N D
N C
S B
R L E D
G L E D
B L E D
5 0 C
G N D
5V_TXD2
Dual BUS Buffer
(HOOK/MKEY)
BUS Buffer
D103
RKS151KJ
Reverse
Current Prevention
D104,105
TX Power Detection
D108,109
Over DC Supply Protection
Reverse
Current
Prevention
Reverse
Current Prevention
A2
5
6
7
8
Y1
G2
VCC
A2
M I C
.
CN514
ANT
R171
0
B-BUS
Over Voltage
Protection
7p
8p
0
T(5W) : 0.
8
V
T(25W) : 2.1V
R : 0V
Содержание NEXEDGE NX-820
Страница 122: ...NX 820 ...