
900MHz Schematics, Board Overlays, and Parts Lists
9.5-11
6816985H01-B
August 16, 2007
Figure 9.5-10. Frequency Generation Unit (FGU) Schematic - Sheet 1 of 3
DNP
DNP
-35dBm Second Harmonic RX VCO
-33.5dBm Second Harmonic TX VCO
-20dBm RX VCO
3 to 11V in TX mode
Not placed
Measured with HP85024A
SYNTHESIZER TOP SHIELD
12.8V (Typical)
All values above are ’typical’
-18.5dBm TX VCO
SYNTHESIZER BOTTOM SHIELD
2 to 9V in RX mode
Steering Line DC Voltage
MODIN
(SOURCE)
High Frequency Probe
C228
.015uF
C293
100pF
15K
R6
C238
39pF
SHIELD
SH202
1
C227
0.10uF
NU
L299
1.8uH
L203
1uH
750
C233
0.10uF
R210
39pF
C222
C203
.01uF
.01uF
IF572
R290
33K
IF200
L290
1uH
47K
R295
C211
SHIELD
SH201
1
0.1uF
C298
0.1uF
0.1uF
C218
IF205
2K
R285
K
0
2
5
1
2
R
C226
39pF
0.10uF
C289
R212
39pF
C216
330
R208
1K
.01uF
.01uF
C205
C239
.01uF
C232
2.2uF
D
N
G
5
SCLK
6
SYNC
3
D
D
V
1
VOUT
AD5320BRT
U202
4
DIN
2
1
K2
2
K3
3
IF208
6
A1
5
A2
4
A3
K1
4700pF
2
1
D201
L205
C235
R206
2.2uH
91
C292
0.1uF
R291
36K
R250
IF206
.015uF
0
C229
C201
2.2uF
.01uF
C202
.01uF
0
0
R213
R252
2.2uH
200
L200
2
1
R207
0.75pF
C237
IF566
0.10uF
C285
IF202
IF568
IF201
150
150
R201
R294
0
22pF
C206
33pF
R216
1000pF
47K
C290
10uF
C207
.01uF
C243
C220
39pF
4
1
2
R
K
2
1
68
R286
1
IF212
2
0
2
P
T
1
TEST_POINT
TP201
.01uF
.01uF
C204
IF203
R204
0
R211
IF571
C217
0
L206
2.2uF
L207
2.2uH
R200
0
100
100
L204
6.8nH
C215
0.10uF
C295
0.1uF
C236
39pF
IF573
R205
IF570
3.9K
C213
.01uF
0.10uF
C225
ANA_3V
TP203
TEST_POINT
1
10uF
C208
2.2uH
SHIELD
SH204
L201
CLC450
U205
4
3
1
5
2
C200
0.10uF
C210
39pF
C219
0.10uF
.01uF
C244
0.10uF
C212
0.1uF
C223
220pF
IF585
C221
0.1uF
C291
0.1uF
0
R251
150
150
R202
C209
0.10uF
1
R217
100
16.8MHz
45J68
Y200
D
N
G
2
OUT
3
C
C
V
4
VCON
C248
3.3pF
2
1
10uF
IF204
C240
1000pF
C286
2
K
J10
WARP
XTAL1
K9
XTAL2
K10
D
D
V
1
D
D
V
7
K
2
D
D
V
0
1
C
3
D
D
V
0
1
A
VMULT1
K4
VMULT2
K3
K1
VMULT3
VMULT4
J1
O
R
V
G10
SFCAP
H10
SFIN
E10
SFOUT
G7
TEST1
A9
TEST2
A8
VBYPASS
G6
P
C
V
2
A
4
D
H1
MODOUT
A6
NC1
G4
NC2
F10
NC3
F7
PREIN
D10
PVREF
B10
REFSEL
G5
SFBASE
4
E
1
D
N
G
8
K
2
D
N
G
7
E
3
D
N
G
5
D
IADAPT
A4
INDMULT
K5
IOUT
A5
LOCK
E1
MODIN
D1
D6
CCOMP
CLK_CLK
F4
CPB1
D7
CPB2
A7
DATA
F1
EN_CEX
G1
FREFOUT
K6
D
N
G
ADAPTSW
A3
AUX1
A1
AUX2
B1
AUX3
C1
AUX4
C234
35U92
U201
39pF
0.10uF
IF567
C241
5
A2
4
A3
1
K1
2
K2
3
K3
6
A1
IF211
D202
C214
2.2uF
OUT
5
7
SHDN
4
D
D
V
CLK
8
1
COM
D
N
G
3
IN
2
6
OS
8.2K
R293
MAX7414
FL200
IF569
C242
39pF
16_8_filtered
5V
ANA_3V
AUX4
AUX3
AUX2
VSF
SSI_CLK_1
SSI_FSYNC_2
TX_SSI_FSYNC
SPI_MOSI_RX
SPI_MOSI_TX
SPI_MOSI_A
SPI_CLK_TX
SPI_CLK_RX
SPI_CLK_A
16_8_RX
UNIVERSAL_CS_1
UNIVERSAL_SPI_CS
TX_SSI_DATA
SSI_CLK_2
SSI_FSYNC_1
TX_SSI_CLK
5V
VCTRL
SC_FILT_EN
LOCK_DET
PRESC
Summary of Contents for ASTRO MT 1500
Page 4: ...iv Table of Contents August 16 2007 6816985H01 B Notes ...
Page 164: ...August 16 2007 6816985H01 B 5 6 Troubleshooting Procedures Operational Error Codes Notes ...
Page 188: ...August 16 2007 6816985H01 B 6 1 24 VHF Troubleshooting Charts Secure Hardware Failure Notes ...
Page 212: ...August 16 2007 6816985H01 B 6 2 24 UHF1 Troubleshooting Charts Secure Hardware Failure Notes ...
Page 236: ...August 16 2007 6816985H01 B 6 3 24 UHF2 Troubleshooting Charts Secure Hardware Failure Notes ...
Page 710: ...9 2 40 UHF1 Schematics Board Overlays and Parts Lists August 16 2007 6816985H01 B Notes ...
Page 806: ...9 5 32 900MHz Schematics Board Overlays and Parts Lists August 16 2007 6816985H01 B Notes ...
Page 816: ...Index 4 August 16 2007 6816985H01 B Notes ...
Page 817: ......