
8-48
Schematics, Boards Overlays, and Parts Lists
: Transceiver (RF) Boards: UHF1/700–800 MHz
Figure 8-27. MNUS4000A/C/E 700–800 MHz Receiver Front End Circuit
CTRL_RX_78_LNA_A = 3V (HIGH), LNA'S TURN ON
CTRL_RX_78_LNA_A
DC_LIN_1_8V_A
IN
IN
22K
22K
2
3
1
Q401
MUN5212T
R413
1
E401
C427
R404
R403
R401
R402
4
3
5
Q402
1
6
2
Q402
C424
BC858CD
2.7
4.7UF
BC858CD
33PF
3.3K
68
82K
22K
2
C426
C425
L403
U406
L402
R406
R405
12NH
BFR380F
3PF
2.7
2.4NH
10
1PF
23
1
L401
C423
6.8PF
12NH
4.7UF
C422
C421
33PF
15PF
3
C413
1
CTRL_RX_78_SW1
L407
J3
GND
J2
V2
J1
V1
IN2
GND1
GND2
GND3
GND4
OUT2
OUT1
IN1
L408
5
7
3
FL401
6
4
1
5
2
U404
C418
C416
C412
7.5NH
33PF
10NH
AS211334
CTRL_RX_78_SW2
B4232
33PF
47PF
4
8
6
2
CTRL_RX_78_SW2
J3
GND
J2
J1
V1
6
4
1
3
5
2
U402
C408
C404
C406
C402
0
33PF
CTRL_RX_78_SW1
AS211334
33PF
33PF
V2
C409
0
CTRL_RX_78_SW1 = 0V, 700 PATH SELECTED
SW1 AND SW2 HAVE TO BE OPPOSITE
CTRL_RX_78_SW2 = 0V, 800 PATH SELECTED
TL_RX_78
IN
IN2
GND1
GND2
GND3
GND4
OUT2
OUT1
IN1
J3
GND
J2
V2
J1
V1
C405
C407
6
4
1
3
5
2
U403
C411
5
7
3
1
8
6
4
2
FL402
C410
AS211334
CTRL_RX_78_SW2
0
33PF
33PF
B4232
CTRL_RX_78_SW1
0
C415
6
4
1
3
5
2
U405
C414
C417
C419
CTRL_RX_78_SW2
0
AS211334
CTRL_RX_78_SW1
33PF
33PF
0
J3
GND
J2
V2
J1
V1
R408
R407
2
1
E402
1
6
2
Q403
R409
4
3
5
Q403
R410
BC858CD
68
3.3K
82K
22K
BC858CD
C428
C429
33PF
4.7UF
C434
C431
4.7UF
33PF
L404
L405
12NH
12NH
L406
R411
C430
2
3
1
U407
C432
C433
R412
RF_RX_FE_B2_OUT
10
2.7
3PF
.5PF
6.8PF
4.7NH
BFR380F
OUT
6
1
U408
NC7WZ04
CTRL_RX_78_SW1
IN
VCC
GND
NC
4
3
U408
2
U408
CTRL_RX_78_SW2
NC7WZ04
DC_LIN_3V
NC7WZ04
IN
5
Содержание ASTRO APX 7000
Страница 1: ......
Страница 4: ...iv Document History Notes ...
Страница 24: ...2 4 Radio Power DC Power Routing VOCON Board Notes ...
Страница 98: ...3 74 Theory of Operation Global Positioning System GPS ...
Страница 104: ...4 6 Troubleshooting Procedures Power Up Self Check Diagnostics and Repair Not for Field Use Notes ...
Страница 163: ...Troubleshooting Charts PA Failure 5 59 ...
Страница 164: ...5 60 Troubleshooting Charts PA Failure ...
Страница 168: ...6 4 Troubleshooting Waveforms Clocks 6 2 2 4 MHz Clock Trace 1 Trace recorded at R6113 Figure 6 2 4 MHz Clock Waveform ...
Страница 174: ...6 10 Troubleshooting Waveforms Audio SSI 6 3 3 Sync Trace 1 Trace recorded at R3005 Figure 6 8 Audio SSI Sync Waveform ...
Страница 175: ...Troubleshooting Waveforms Audio SSI 6 11 6 3 4 BCLK Trace 1 Trace recorded at R3006 Figure 6 9 Audio SSI BCLK Waveform ...
Страница 177: ...Troubleshooting Waveforms RX SSI 6 13 6 4 2 DA Trace 1 Trace recorded at R1005 Figure 6 11 RX SSI DA Waveform ...
Страница 178: ...6 14 Troubleshooting Waveforms RX SSI 6 4 3 FSync Trace 1 Trace recorded at R1004 Figure 6 12 RX SSI FSync Waveform ...
Страница 180: ...6 16 Troubleshooting Waveforms TX SSI 6 5 2 DA Trace 1 Trace recorded at R1017 Figure 6 14 TX SSI DA Waveform ...
Страница 181: ...Troubleshooting Waveforms TX SSI 6 17 6 5 3 FSync Trace 1 Trace recorded at R1007 Figure 6 15 TX SSI FSync Waveform ...
Страница 182: ...6 18 Troubleshooting Waveforms SPI 6 6 SPI 6 6 1 CLK Trace 1 Trace recorded at R6605 Figure 6 16 SPI CLK Waveform ...
Страница 183: ...Troubleshooting Waveforms SPI 6 19 6 6 2 CLK INV Trace 1 Trace recorded at R2325 Figure 6 17 SPI CLK INV Waveform ...
Страница 184: ...6 20 Troubleshooting Waveforms SPI 6 6 3 CS Trace 1 Trace recorded at Pin 34 of J2301 Figure 6 18 SPI CS Waveform ...
Страница 185: ...Troubleshooting Waveforms SPI 6 21 6 6 4 MOSI Trace 1 Trace recorded at R6603 Figure 6 19 SPI MOSI Waveform ...
Страница 187: ...Troubleshooting Waveforms I2C BUS 6 23 6 7 2 SCL 5V Trace 1 Trace recorded at R6204 Figure 6 21 I2C Bus SCA 5V Waveform ...
Страница 188: ...6 24 Troubleshooting Waveforms I2C BUS 6 7 3 SDA Trace 1 Trace recorded at R6209 Figure 6 22 I2C Bus SDA Waveform ...
Страница 194: ...6 30 Troubleshooting Waveforms USB 6 10 2 D Trace 1 Trace recorded at Pin 35 of J3001 Figure 6 28 USB D Waveform ...
Страница 196: ...6 32 Troubleshooting Waveforms UART 6 11 2 TX Trace 1 Trace recorded at F_Boot_Tx Figure 6 30 UART TX Waveform ...
Страница 198: ...6 34 Troubleshooting Waveforms SDRAM 6 12 2 CLKX Trace 1 Trace recorded at TP6308 Figure 6 32 SDRAM CLKX Waveform ...
Страница 276: ...7 58 Troubleshooting Tables List of Board and IC Signals Notes ...
Страница 318: ...8 42 Schematics Boards Overlays and Parts Lists Transceiver RF Boards VHF 700 800 Notes ...
Страница 380: ...8 104 Schematics Boards Overlays and Parts Lists Transceiver RF Boards UHF1 700 800 MHz Notes ...
Страница 432: ...8 156 Schematics Boards Overlays and Parts Lists Transceiver RF Boards UHF1 VHF Notes ...
Страница 458: ...8 182 Schematics Boards Overlays and Parts Lists Transceiver RF Boards UHF1 UHF2 Notes ...
Страница 498: ...8 222 Schematics Boards Overlays and Parts Lists Transceiver RF Boards UHF2 700 800 MHz Notes ...
Страница 546: ...8 270 Schematics Boards Overlays and Parts Lists Transceiver RF Boards UHF2 VHF Notes ...
Страница 606: ...8 330 Schematics Boards Overlays and Parts Lists VOCON Boards Notes ...
Страница 638: ...Glossary 10 Glossary Notes ...
Страница 643: ......