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SRM9020
Simoco SRM9020 Service Manual
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DRAFT D
TNM-M-E-0001
Page
63
P3
TEST PORT
0VA
3N3
/BG
/BR
EBG
EINT
EBR
ELIN
ECLK
ELOUT
EMS
EE
ERES
/RESET
7
12
13
9
19
17
14
10
8
2
23
5
4
3
25
1
6
13V8_UNSW_F
3N3
0VA
AUD_OUT
OC_SWITCH
TXD
RXD
TFS
RFS
SCLK
18
FC0
15
20
PWR_ON
P1
OPTIONS CONNECTOR
60651106.cdr rev6
C61
100p
0VA
C62
100p
0VA
C66
100p
0VA
C67
100p
0VA
C68
100p
0VA
C69
100p
0VA
C75
100p
0VA
C76
100p
0VA
C70
100p
0VA
C71
100p
0VA
C72
100p
0VA
C73
100p
5
7
8
4
6
3
1
2
0VA
0VA
PWR_ON
R190
100R
R189
100R
R195
6k8
3N3
R188
100R
FPGA84
Q1
BC849CW
R191
4k7
0VA
PF6
PF4
24
16
26
22
11
21
C1
100p
0VA
C2
100p
0VA
C97
100p
0VA
C98
100p
0VA
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
R11
6k8
+5V
R85
22k
0VA
3
2
D13B
BAT54SW
STX
SRX
C140
100p
0VA
1
3
D13A
BAT54SW
3
2
D14B
BAT54SW
1
3
D14A
BAT54SW
0VA
+5V
R203
680R
C141
100p
0VA
R204
100R
FPGA83
3N3
0VA
0VA
R205
1k
0VA
C143
10n
0VA
0VA
0VA
0VA
3
2
D16B
BAT54SW
0VA
1
3
D16A
BAT54SW
13V8_UNSW_F
1
3
D9A
BAT54SW
13V8_UNSW_F
1
3
D8A
BAT54SW
L50
FB
L51
FB
L52
FB
C74
10n
L60
N.F.
R216
3k9
Q106
BC849CW
0VA
13V8_UNSW_F
FPGA9
R217
1k
0W25
Q105
BCX51
GROUND
MIC AUDIO
MIC GND
H/S AUDIO
ON/OFF
TxDATA
RxDATA
+5V
13V8
PWR ON
IRESET
SIN
SOUT
AUDIO OUT
AUD IN SW
SCLK
RFS
TFS
PF4/IRQE
PF6/IRQ1
RXD
TXD
CONF2
OPTIONS PTT
+5V
3N3
SWITCHED
AUD_OUT
AUD_IN1
OPTION
AUDIO
OPTION_AUDIO
13V8
SWITCHED
IRESET
R3
150R
C13
1n0
AUD_IN2A
0VA
AUD_IN2
OPTION_AUDIO
R89
0R
L8
FB
C22
1n0
0VA
BATT_IN
C52
100p
0VA
4
5
1
2
11
12
9
10
6
13
0VA
C83
100p
0VA
SPKR_OUT1
SPKR_OUT2
L3
N.F.
3
7
PTT
C100
100p
0VA
3
2
D19B
BAT54SW
1
3
D19A
BAT54SW
R207
680k
13V8_UNSW
0VA
0VA
L56
FB
L58
FB
L57
FB
L59
FB
R211
100R
R210
1k
3
2
D20B
BAT54SW
0VA
1
3
D20A
BAT54SW
15
0VA
R212
1k
1
3
D11A
BAT54SW
C367
100n
D309
MBR0520LT1
0VA
Q320
BCX54-10
R379
1k
0VA
R378
10k
8
0VA
OC_SWITCH
3Q3
C369
1n0
0VA
14
R380
330R
AUD_IN2A
IGN
PTT_IN
FCO
3N3
13V8_UNSW
2
S1
RJ CONNECTOR
P2
DB15 CONNECTOR
PWR_ON
13V8_UNSW
8
3
3
PWR_ON
1
3
D17A
BAV99W
3
2
D17B
BAV99W
1
2
P4
N.F.
0VA
1
3
D15A
BAV99W
3
2
D15B
BAV99W
3
IGN
0VA
13V8_UNSW
1
3
D21A
BAV99W
3
2
D21B
BAV99W
1
3
D23A
N.F.
R218
N.F.
5V0
3
2
D23B
N.F.
C358
N.F.
C148
N.F.
EXTERNAL INTERFACE
13.8V UNSWITCHED
GROUND
CONTROL HEAD/MIC.
DATA IN
EXT ON/OFF
BATTERY IN
GROUND
SPEAKER (+)
SPEAKER (-)
EXT. PTT
IGNITION
DATA OUT/EXT CONTROL
R240
220R
R241
330R
R242
270R
Figure
6
-
10
I/O Connections Schematic
66
68
Table of Contents
Default Chapter
2
Revision History
2
Table of Contents
3
1 Introduction
5
General
5
Scope
5
Description
5
Product Variants and Facilities
6
Table 1-1 Common Features for All Variants
6
Table 1-2 Conventional-PMR Variants
7
Table 1-3 Trunked Variants
8
Glossary
9
2 Service Philosophy
10
Service Concept
10
Warranty
10
Service Within and out of Warranty
10
Ancillary Items
10
Software Policy
10
Adjustment and Alignment
11
Technical Specification
12
General
12
Transmitter
13
Receiver
14
Signalling
15
Environmental
16
3 Technical Description
17
Receiver
17
Front End Filters and RF Amplifier
17
First Mixer and if Section
17
Figure 3-1 VHF/UHF Receiver Block Diagram
18
Quadrature Demodulator
19
Receiver Audio Processing
19
Transmitter
19
Drivers and PA Stages
19
Figure 3-2 VHF/UHF Transmitter Block Diagram
20
Power Control
21
Antenna Changeover and Harmonic Filter
21
Transmitter Audio Processing
21
Figure 3-3 VHF/UHF Synthesiser, Block Diagram
22
Frequency Synthesiser
23
General
23
Pll
23
Vco
23
Negative Bias Generator and Loop Filter
23
Phase Modulator
23
Reference Oscillator
24
Control
24
DSP and FPGA
24
Figure 3-4 VHF/UHF Control Block Diagram
25
DSP Clock Oscillator
26
Memory
26
Multiplexer
26
Power Supplies
26
Power on Function
26
Power Supplies
27
4 Alignment
29
Test Equipment
29
Figure 4-1 SRM9000 Programming & Alignment Breakout Box
30
Figure 4-2 SRM9000 Speaker Output Breakout Box
30
Test Set up
31
Figure 4-3 Test Set up
31
COMMS Set up
32
Radio Preparation
33
Alignment Procedure
34
5 Replaceable Parts
43
Figure 5-1 Replaceable Parts
43
Figure 5-2 Band-Specific Parts
44
6 Circuit Diagrams and Parts List
45
List of Illustrations
45
Figure 6-3 Power Supply Schematic
45
Figure 6-4E0 Receiver Circuit Schematic
45
Figure 6-6E0 Synthesiser - VCO Schematic
45
Figure 6-7E0 Synthesiser - PLL Schematic
45
Figure 6-11 SRM9000 PCB Layout, Top (1/2)
45
Figure 6-13 SRM9000 PCB Layout, Bottom (1/2)
45
Figure 6-1 SRM9000 Block Diagram
46
Figure 6-2 DSP and FGPA Schematic
47
Figure 6-8 A/D Converter Schematic
65
Figure 6-9 D/A Multiplexer Schematic
66
Figure 6-10 I/O Connections Schematic
67
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Operating Instructions
29 pages
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Simoco SRM9020 Specifications
General
Brand
Simoco
Model
SRM9020
Category
Transceiver
Language
English
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