76
NX-720H(G)/720H
SCHEMATIC DIAGRAM
X57-823 10/10
AT
AU
AV
AW
AX
TX-RX UNIT (X57-8230-10)
FWD
REV
33A_2
L114
9
.5T
D103
RKS151KJ
D105
HSB88AS-E
D104
HSB88AS-E
.
L117
L118
68n
D106
DZ2J056(M)
D108
RB520SM-30
D10
9
RB520SM-30
R15
9
0
R161
100k
R160
0
R134
180
R143
100k
R158
33k
R152
1k
R136
180
R145
0
R13
9
100
R142
0
R154
0
R148
0
R157
33k
R176
470
.
R177
0
.
R178
0
R17
9
33k
R180
33k
C167
15p
C157
1000p
C163
22p
C165
470p
C158
470p
C184
22p
C161
4p
C188
1000p
C187
1000p
C1
9
3
100p
C1
9
1
150p
C1
9
2
10p
.
C182
27p
COUPPLER
Forward Power
Reverse Power
BLC
MKEYI
BLED
MBL
SCK0
SCK0
LCDCS
LCDCS
SDO0
HOOK_RXD1
TXD2
GLED
TXD1
BUCNT1
BUCNT2
MKEYO
50C
50C
RLED
SDI0
POWER
5V_TXD2
/PTT
SB
EMG
33M
.
CN514
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1
9
20
21
22
23
24
25
26
27
28
2
9
30
.
IC511
TC74VHCT244AFK
1
1G
2
1A1
3
2Y4
4
1A2
5
2Y3
6
1A3
7
2Y2
8
1A4
9
2Y1
10
GND
11
12
13
14
15
16
17
18
1
9
20
2A1
1Y4
2A2
1Y3
2A3
1Y2
2A4
1Y1
2G
VCC
.
IC50
9
TC7WH126FU-F
1
G1
2
A1
3
Y2
4
GND
5
6
7
8
A2
Y1
G2
VCC
.
CP501
100kX4
.
D502
DB2S310
.
D511
DB2S310
.
IC716
TC7WT126FU-F
1
G1
2
A1
3
Y2
4
GND
5
6
7
8
A2
Y1
G2
VCC
.
CP508
100kX4
CN530
.
CP512
100kX2
.
CP515
100X2
.
CP516
100X4
.
CP511
100X2
.
R617
0
.
R613
10k
.
R610
470k
.
R615
4.7k
.
R684
47k
.
R686
22k
.
R616
.
R688
.
R6
9
0
1k
.
R612
1k
.
R614
0
.
C611
47p
.
C603
100p
.
C604
1000p
.
C602
0.01u
.
C60
9
.
C610
47p
47p
.
C612
.
C613
.
C605
.
C607
100p
100p
.
C614
100p
.
C615
.
C616
100p
100p
.
C617
100p
.
C618
100p
.
C620
100p
.
C621
1000p
.
C650
0.1u
.
C651
0.1u
.
C652
0.1u
.
C661
47p
.
C581
0.01u
LCDCE
LCDCL
GND
HOOK
PTT
MKEY
POWER
LCDDI
GND
GND
LCDDO
MIC
ME
SB
SP+
SP+
SP-
SP-
POWER
MIC
ME
SP+
SP-
BLC
MBL
EMG
GND
GND
NC
SB
RLED
GLED
BLED
50C
GND
5V_TXD2
0.01u
100p
470k
1k
Dual BUS Buffer
BUS Buffer
Dual BUS
Buffer
Reverse
Current Prevention
TX Power Detection
D104,105
Over Voltage
Protection
Over DC
Supply Protection
D108,10
9
Reverse
Current Prevention
Reverse
Current
Prevention
.
R1
0
ANT
D511
R171
0
B-BUS
Summary of Contents for Nexedge NX-720H
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