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112
NX-720
SCHEMATIC DIAGRAM /
原理图
X57-823 8/10
AJ
AK
AL
AM
AN
TX-RX UNIT (X57-8230-11)
50CS
50CS
TV2
TV1
/T_R
50R
50R
VCO_MOD
50C
THP1
THP1
/T_R
L26
D17
RKS151KJ
L27
100n
2SC5108(Y)F
Q11
L25
120n
D16
RKS151KJ
.
IC201
BD7542FVM
1
2
3
4
oUT1
VSS
5
6
7
8
VDD
D10
1SV282-F
L13
220n
D12
1SV282-F
MCH3914(7)-H
Q7
L11
220n
D15
1SV278F
D7
1SV282-F
D11
1SV282-F
D5
1SV325F
L18
43n
D9
1SV282-F
L23
3.3u
MCH3914(7)-H
Q6
D4
1SV325F
L7
10u
L6
10u
L24
3.3u
2SC5383-T111
Q4
L22
D14
DA2S101
L16
180n
D8
1SV282-F
2SC5108(Y)F
Q10
L15
180n
L19
2SC5108(Y)F
Q5
D13
1SV305F
L21
47n
D6
1SV305F
SSM3J15FS
Q9
L202
560n
3SK318
Q201
L201
.
D203
1SV283F
L203
270n
XF1
L71-0678-05
49.95MHz
L205
39n
.
L207
220n
BPF
.
L209
27n
.
D202
1SV283F
L204
33n
.
L210
27n
L301
150n
L20
28n
L12
3.3u
L14
3.3u
.
L220
.
C218
270n
Q8
EM6M1
4
6
2
1
3
5
CN203
CN204
CN205
.
R257
100k
.
R230
0
R64
8.2k
R67 100
R66
100
R62
100
R69
4.7k
R65
100
R63
10k
.
R234
100k
.
R242
150k
.
R233
270k
.
R243
100k
.
R237
100k
.
R241
10k
.
R235
10k
R38
0
R52
470k
R56
0
R61
150k
R48
4.7k
R60
47k
R59
1k
.
R46
47k
R58
22
R55
220
.
R44
27k
R54
330
R37
0
R36
0
R57
22
R50
56
R42
100k
R51
560
R43
100k
R34
1.8k
R39
10k
R53
56k
R35
0
R70
470k
R245
1k
R208
180k
R204
4.7k
.
R212
100k
R203
680
R210
220k
R205
150
R201
47
R209
100k
.
R258
100k
R207
100k
R394
180
L319
180n
L317
390n
L4
10n
L10
5.6n
L17
6.8n
C82
1000p
C86
470p
C84
15p
C83
5p
C87
1000p
C81
22p
C88
0.1u
C89
15p
C85
1000p
.
C240
1u
.
C239
0.1u
C58
470p
C41
100p
C77
0.5p
C54
180p
C80
470p
C44
100p
C66
10p
C69
8p
C73
0.01u
C74
0.01u
C67
6p
C57
4p
C45
330p
C55
39p
C76
0.5p
C78
1000p
C79
1000p
C63
0.75p
C68
10p
C70
1u
25
C42
100p
C64
10u
10
C59
4p
.
C51
1u
C49
220p
C56
8p
C61
470p
C52
470p
C53
220p
C46
10p
C50
7p
C60
4p
C35
6p
C40
8p
C37
8p
.
C229
1000p
C212
22p
C360
0.01u
.
C223
1000p
.
C202
0.01u
.
C232
22p
C370
22p
C215
1000p
C293
470p
C207
1000p
C205
470p
C213
3p
2p
C209
12p
C208
12p
.
C224
22p
C217
4p
.
C227
1000p
C210
0.01u
C358
10p
C203
470p
C216
1000p
C214
15p
C211
6p
C201
0.01u
.
C204
4.7u
.
C225
1000p
C357
0.5p
C71
470p
C43
100p
.
R223
0
CN206
-
-
+
RX VCO
TX VCO
POWER
MIC
ME
SP+
SP-
POWER
MIC
ME
SP+
SP-
+
DC AMP(BPF)
Ripple Filter
Buffer AMP
(PLL Fin)
RX VCO
TX VCO
T/R VCO Switch
T/R VCO
Switch
Buffer AMP
Buffer AMP
RX 1st Mixer
RX VCO
Frequency Control
TX VCO
Frequency Control
PLL f-in BPF Tune
RX VCO Assist Tune
TX VCO Assist Tune
RX VCO Assist Tune
D9,10
TX VCO
Assist Tune
PLL f-in BPF Tune
Speed up
FM
Modulation
T/R Switch
D16,17
RX BPF Tune
D202-207
FIN
33C
R87
0
R88
0
R83
0
R86
0
R81
0
R82
0
R80
0
D11,12
B-BUS
B-BUS
B-BUS
B-BUS
L206
100n
150C
150C
150C
150C
.
R45
47k
4.77V
R:4.76V
T:4.74V
f L:2.2
8
V
fC:4.96V
fH:
8
.93V
13.94V
R:4.61V
T:4.62V
R:0.72V
T:0.6
8
V
R:4.00V
T:0V
R:3.79V
T:3.76V
R:0V
T:4.02V
R:1.56V
T:1.35V
R:0.
8
6V
T:0V
R:3.56V
T:3.76V
R:0V
T:3.9V
R:0V
T:1.0
8
V
R:2.9V
T:2.
8
2V
R:4.0
8
V
T:0V
R:2.01V
T:2.4
8
V
R:1.21V
T:1.97V
R:2.7V
T:2.49V
R:4.09V
T:4.06V
R:2.75V
T:0V
R:3.2
8
V
T:0V
Summary of Contents for NEXEDGE NX-720
Page 122: ...NX 720 ...