Hytera HD705G Manuals

Manuals and User Guides for Hytera HD705G. We have 2 Hytera HD705G manuals available for free PDF download: Service Manual

Hytera HD705G Service Manual

Hytera HD705G Service Manual (513 pages)

Brand: Hytera | Category: Portable Radio | Size: 17 MB

Table of Contents

Table of Contents
4
Documentation Information

11
1 Introduction

12
2 Product Controls

13
3 Baseband Section

16
- Power Section
  16
  - Diagram of Power Control
    16
  - Radio On/Off
    16
  - Figure 3-1 Diagram of Power Control
    16
  - Figure 3-2 Diagram of Radio On/Off Control
    16
  - Power Protection
    17
  - Power Consumption Control
    17
- Control Section
  17
  - OMAP5912 Dual-Core Processor
    17
  - Figure 3-3 Diagram of OMAP5912
    18
  - Figure 3-4 Diagram of Overall Scheme
    18
  - External Memory
    19
  - Figure 3-5 Diagram of External Memory
    19
  - Clock
    20
  - Figure 3-6 Diagram of Baseband Clock
    20
  - Reset Signal
    21
  - Spi
    21
  - Mcbsp
    21
  - Figure 3-7 Diagram of Reset Signal
    21
  - Figure 3-8 Diagram of SPI Connection
    21
  - Usb
    22
  - Figure 3-9 Diagram of MCBSP Connection
    22
  - Figure 3-10 Diagram of USB Interface
    22
  - Uart
    23
  - I2C
    23
  - Figure 3-11 Diagram of UART Interface Connection
    23
  - Figure 3-12 Diagram of I2C Connection
    23
  - Microwire
    24
  - Mcsi1
    24
- Audio Section
  24
- Troubleshooting Flow Chart
  27
- PCB Difference
  28
4 GPS Circuit

29
- Circuit Description
  29
- Figure 4-1 Diagram of GPS Circuit
  29
- Schematic Diagram
  30
- Parts List
  30
- Figure 4-2 Schematic Diagram
  30
- Troubleshooting Flow Chart
  33
5 Tuning Description

34
6 Interface Definition

35
7 UHF1 (400-470Mhz) Information

42
- Transmitter Circuit
  42
- Receiver Circuit
  43
  - Receiver Front-End
    44
  - Figure 7-2 Diagram of Receiver Circuit
    44
  - Receiver Back-End
    45
- Frequency Generation Unit (FGU)
  45
  - Figure 7-3 Diagram of if Processor
    45
  - Figure 7-4 Diagram of FGU
    46
  - Working Principle of PLL
    46
  - Two-Point Modulation
    47
  - Working Principle of VCO
    47
- PCB View
  48
- Block Diagram
  56
- Schematic Diagram
  59
- Parts List
  75
- Troubleshooting Flow Chart
  125
8 UHF2 (450-520Mhz) Information

131
- Transmitter Circuit
  131
  - RF Power Amplifier Circuit
    131
  - Figure 8-1 Diagram of Transmitter Circuit
    131
  - Low-Pass Filter Circuit
    132
  - Auto Power Control Circuit
    132
- Receiver Circuit
  132
  - Receiver Front-End
    133
  - Figure 8-2 Diagram of Receiver Circuit
    133
  - Receiver Back-End
    134
- Frequency Generation Unit (FGU)
  134
  - Figure 8-3 Diagram of if Processor
    134
  - Figure 8-4 Diagram of FGU
    135
  - Working Principle of PLL
    135
  - Working Principle of VCO
    135
  - Two-Point Modulation
    136
- PCB View
  137
- Block Diagram
  145
- Schematic Diagram
  148
- Parts List
  164
- Troubleshooting Flow Chart
  215
9 UHF3 (350-400Mhz) Information

221
- Transmitter Circuit
  221
  - RF Power Amplifier Circuit
    221
  - Figure 9-1 Diagram of Transmitter Circuit
    221
  - Low-Pass Filter Circuit
    222
  - Auto Power Control Circuit
    222
- Receiver Circuit
  222
  - Receiver Front-End
    223
  - Figure 9-2 Diagram of Receiver Circuit
    223
  - Receiver Back-End
    224
- Frequency Generation Unit (FGU)
  224
  - Figure 9-3 Diagram of if Processor
    224
  - Figure 9-4 Diagram of FGU
    225
  - Working Principle of PLL
    225
  - Working Principle of VCO
    225
  - Two-Point Modulation
    226
- PCB View
  227
- Block Diagram
  235
- Schematic Diagram
  238
- Parts List
  254
- Troubleshooting Flow Chart
  305
10 UHF5 (806-941Mhz) Information

311
- Transmitter Circuit
  311
  - RF Power Amplifier Circuit
    311
  - Figure 10-1 Diagram of Transmitter Circuit
    311
  - Low-Pass Filter Circuit
    312
  - Auto Power Control Circuit
    312
- Receiver Circuit
  312
  - Receiver Front-End
    313
  - Figure 10-2 Diagram of Receiver Circuit
    313
  - Receiver Back-End
    314
- Frequency Generation Unit (FGU)
  314
  - Figure 10-3 Diagram of if Processor
    314
  - Figure 10-4 Diagram of FGU
    315
  - Working Principle of PLL
    315
  - Working Principle of VCO
    315
  - Two-Point Modulation
    316
- PCB View
  317
- Block Diagram
  325
- Schematic Diagram
  328
- Parts List
  344
- Troubleshooting Flow Chart
  398
11 VHF (136-174Mhz) Information

406
- Transmitter Circuit
  406
  - RF Power Amplifier Circuit
    406
  - Figure 11-1 Diagram of Transmitter Circuit
    406
  - Low-Pass Filter Circuit
    407
  - Auto Power Control Circuit
    407
- Receiver Circuit
  407
  - Receiver Front-End
    408
  - Figure 11-2 Diagram of Receiver Circuit
    408
  - Receiver Back-End
    409
- Frequency Generation Unit (FGU)
  409
  - Working Principle of PLL
    410
  - Working Principle of VCO
    410
  - Direct Modulation
    411
- PCB View
  412
- Block Diagram
  420
- Schematic Diagram
  423
- Parts List
  439
- Troubleshooting Flow Chart
  492
12 Disassembly and Assembly

498
- Disassembling the Chassis
  498
- Disassembling the TX and RX Units
  498
- Assembly
  499
13 Exploded View

500
14 Packing Guide

506
15 Specifications

507
16 Appendix

510
- Table 16-1 UHF1 Blind Spot
  511
- Table 16-2 UHF2 Blind Spot
  511
- Table 16-3 UHF3 Blind Spot
  512
- Table 16-5 VHF Blind Spot
  512

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Hytera HD705G Service Manual

Hytera HD705G Service Manual (299 pages)

Brand: Hytera | Category: Portable Radio | Size: 8 MB

Table of Contents

Table of Contents
3
1 Revision History

5
2 Copyright Information

6
3 Disclaimer

7
4 Introduction

8
5 Product Controls

9
6 Baseband Section

11
- Power Section
  11
- Control Section
  12
- External Memory
  13
- Audio Section
  18
- Troubleshooting Flow Chart
  20
- PCB Difference
  21
7 GPS Circuit

22
- Circuit Description
  22
- Schematic Diagram
  23
- Parts List
  24
- Troubleshooting Flow Chart
  25
8 Tuning Description

26
9 Interface Definition

27
10 UHF1 (400-470Mhz) Information

31
- Transmitter Circuit
  31
- Receiver Circuit
  32
- Frequency Generation Unit (FGU)
  34
- PCB View
  36
- Block Diagram
  44
- Schematic Diagram
  47
- Parts List
  63
- Troubleshooting Flow Chart
  88
11 UHF2 (450-520Mhz) Information

94
- Transmitter Circuit
  94
- Receiver Circuit
  95
- Frequency Generation Unit (FGU)
  97
- PCB View
  99
- Block Diagram
  107
- Schematic Diagram
  110
- Parts List
  126
- Troubleshooting Flow Chart
  152
12 UHF3 (350-400Mhz) Information

158
- Transmitter Circuit
  158
- Receiver Circuit
  159
- Frequency Generation Unit (FGU)
  161
- PCB View
  163
- Block Diagram
  171
- Schematic Diagram
  174
- Parts List
  190
- Troubleshooting Flow Chart
  216
13 VHF (136-174Mhz) Information

222
- Transmitter Circuit
  222
- Receiver Circuit
  223
- Frequency Generation Unit (FGU)
  225
- PCB View
  227
- Block Diagram
  235
- Schematic Diagram
  238
- Parts List
  254
- Troubleshooting Flow Chart
  281
14 Disassembly and Assembly

287
15 Exploded View

289
16 Packing Guide

293
17 Specifications

294
18 Appendix

296

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