Comtech-ef-data C5 Uživatelský manuál Strana 271
- Strana / 332
- Tabulka s obsahem
- KNIHY
Hodnocené. / 5. Na základě hodnocení zákazníků
C5/K1/K3 Integrated Satellite Terminal System Options
Rev. 0 A–27
A.2.3 Asymmetrical Loop Timing
Asymmetrical Loop Timing is the same timing method that is designed into the
SDM-650B TROJAN interfaces. Refer to Figure A-6 and Figure A-7 for transmit and
receive Asymmetrical Loop Timing block diagram. There are two advantages for using
Asymmetrical Loop Timing:
!
Versatility: The user can select different transmit and receive data rates, yet still
clock the send data with the receive satellite clock.
!
Fits easily into on site clocking schemes: The user may clock the send data with a
clock that is not necessarily operating at the same rate as the data rate.
The send timing may only be referenced from an external clock source that is equal to the
data rate in the basic modem.
The asymmetrical clock loop reference must be one of the following:
!
Transmit terrestrial clock
!
External clock input
!
Receive clock input
Notes:
1. The clock inputs are as follows:
a. ( 64 kHz shall be divisible by 8 kHz.
b. ( 32 kHz but ) 64 kHz shall be divisible by 600 Hz or 8 kHz.
c. ) 32 kHz shall be divisible by 600 Hz.
2. The transmit clock source can be the same at the receive digital data rate or
EXT CLOCK if they are * 100 PPM. This is provided on the basic unit, with
or without the asymmetrical loop timing option.
The transmit data is normally clocked into the modem with the Terminal Timing (TT)
clock in typical EIA-422 operation. The received data is clocked out with the Receive
Timing (RT) clock. The asymmetrical loop timing option allows the transmit and receive
data to be clocked with the same, or a multiple of the same clock. The added benefit is
that the transmit and receive data rates do not have to be the same.
- C5/K1/K3 1
- C5/K1/K3C5/K1/K3 1
- Warranty Policy 4
- Limitations of Warranty 4
- Exclusive Remedies 4
- Disclaimer 4
- About this Manual 5
- Cautions and Warnings 5
- Metric Conversions 5
- EMC Directive 6
- Directive: EN55022 6
- Related Documents 7
- Customer Support 8
- Table of Contents 9
- Rev. 0 vii 11
- Rev. 0 ix 13
- Rev. 0 xi 15
- Rev. 0 xiii 17
- Rev. 0 xv 19
- Chapter 1 21
- INTRODUCTION 21
- CONVERTER 23
- 1.1.1 Description 24
- 1.1.2 Additional Features 25
- 1–6 Rev. 0 26
- 1.3 Modes of Operation 27
- 1.4 Component Description 28
- 1.4.1 SDT-5200 Indoor Unit 29
- 1–10 Rev. 0 30
- Rev. 0 1–11 31
- Figure 1-8. LNA 32
- 1.5 Options 33
- 1–14 Rev. 0 34
- Chapter 2 35
- SPECIFICATIONS 35
- 2.1.4.1 Digital Data Rate 39
- 2.1.4.3 Scrambling Types 40
- 2.1.5 C-Band Transmit (TX) 41
- 2.1.5.1 Transmit Frequency 41
- 2.1.5.3 Phase Noise 41
- 2.1.5.5 Transmit Power 42
- 2.1.5.7 Spurious Emissions 42
- 2.1.8 C-Band Output VSWR 43
- 2.1.10.1 Digital Data Rate 44
- 2.1.10.3 Descrambling Types 45
- 2.1.10.5 Receive Frequency 46
- Rev. 0 2–13 47
- 2–14 Rev. 0 48
- 2.2.3.1 Digital Data Rate 52
- 2.2.3.3 Scrambling Types 53
- 2–20 Rev. 0 54
- 2.2.4.5 Transmit IF Power 55
- 2.2.4.7 Spurious Emissions 55
- 2.2.4.8 Transmit Test Modes 56
- 2.2.4.10 Output VSWR 56
- 2.2.5.1 Digital Data Rate 57
- 2.2.5.3 Descrambling Types 58
- 2.2.5.5 Receive Frequency 59
- 2–26 Rev. 0 60
- Refer to Figure 2-1 62
- 1/2 Rate 63
- 3/4 Rate 63
- 7/8 Rate 63
- (Optional) 64
- Performance 67
- Refer to Figure 2-4 68
- 2.4 Acquisition Times 70
- 2.4.2 AGC Output (IDU) 70
- 2.4.3 APS Output (ODU) 71
- 2.5 Interface Specifications 72
- 2.5.1 Clock 72
- 2.5.1.12 Buffering Center 74
- 2.5.1.13 Loopback Modes 75
- 2.5.1.14 Fault Outputs 75
- 2.5.2.1 Universal 75
- 2.5.2.2 EIA-232 Specification 76
- 2.5.3.2 Remote AUPC 80
- 2.6 System Specifications 81
- 2.6.1 Test Modes 81
- or Center 82
- Clear Stored Faults 83
- 2.7 Component Specifications 84
- 2.7.1 Options 84
- 2.7.2.2 IDU 87
- Receive Specification 87
- 2.7.3 C-Band Outdoor Unit 88
- 2.7.4 Ku-Band Outdoor Unit 90
- Rev. 0 2–59 93
- 2.8 Dimensional Envelopes 94
- Rev. 0 2–61 95
- 2–62 Rev. 0 96
- Chapter 3 97
- INSTALLATION 97
- 3.2 Equipment Inspection 98
- 3.2.1 Included Parts 98
- Rev. 0 3–3 99
- Tools Required 100
- Rev. 0 3–5 101
- 3.3.1 IDU Installation 102
- Figure 3-1. IDU Installation 103
- 3.3.2 ODU Installation 104
- Rev. 0 3–9 105
- 3–10 Rev. 0 106
- Rev. 0 3–11 107
- 3–12 Rev. 0 108
- 3.3.2.3 K1/K3 ODU 90 109
- Rotation Check 109
- 3–14 Rev. 0 110
- 3.4 External IDU Connections 111
- 3–16 Rev. 0 112
- Rev. 0 3–25 121
- 3–26 Rev. 0 122
- 3.4.5 Alarm (J10) 124
- 3.5 IDU–ODU Interconnections 125
- 3.6 Power Entry 126
- 3.6.1 AC Option (Standard) 126
- 3.7 Ground Connector (GND) 126
- Chapter 4 127
- OPERATION 127
- 4.1.1 LED Indicators 128
- 4.1.2 Front Panel Keypad 129
- Figure 4-3. Main Menu 130
- 4.1.3 Menu System 131
- 4–6 Rev. 0 132
- Rev. 0 4–7 133
- 4–8 Rev. 0 134
- Refer to Figure 4-4 135
- (Test Mode Configuration) 137
- 4–12 Rev. 0 138
- Refer to Figure 4-5 139
- 4–16 Rev. 0 142
- Rev. 0 4–17 143
- Refer to Figure 4-6 144
- Rev. 0 4–23 149
- 4–24 Rev. 0 150
- Refer to Figure 4-7 151
- Rev. 0 4–27 153
- 4–28 Rev. 0 154
- 4.1.3.5 Configuration Save 155
- 4.1.3.6 Configuration Recall 155
- Figure 4-10. Monitor Menu 156
- 4.1.3.7 Monitor 157
- 4–32 Rev. 0 158
- 4.1.3.8 Faults/Alarms 159
- 4–34 Rev. 0 160
- 4.1.3.8.1 Modulator Faults 161
- 4.1.3.8.2 Demodulator Faults 161
- 4.1.3.8.6 Outdoor Unit 162
- Rev. 0 4–37 163
- 4–38 Rev. 0 164
- 4.1.3.9 Stored Faults/Alarms 165
- 4–40 Rev. 0 166
- 4.1.3.10 Remote AUPC 167
- 4–42 Rev. 0 168
- 4.1.3.11 Utility 169
- 4–44 Rev. 0 170
- 4.1.3.11.1 Utility Modulator 171
- 4–46 Rev. 0 172
- TX SYMBOL RATE Status only 172
- Rev. 0 4–47 173
- 4–48 Rev. 0 174
- Refer to Figure 4-16 175
- 4–50 Rev. 0 176
- 4.1.3.11.3 Utility Interface 177
- Rev. 0 4–53 179
- 4–54 Rev. 0 180
- (Continued) 181
- 4.1.3.11.4 Utility System 182
- Rev. 0 4–59 185
- ACCESS TO 186
- CONDITIONAL OR 186
- OPTION-DEPENDENT 186
- Parameter Information 186
- Rev. 0 4–61 187
- Refer to Figure 4-19 188
- Refer to Figure 4-20 191
- Figure 4-21. IF Loopback 192
- Rev. 0 4–67 193
- 4.2 Software Configuration 194
- 4.2.1 Modem Types 194
- 4.2.1.2 Custom Operation 195
- 4.2.1.3 ASYNC/AUPC Operation 196
- 4.4 Clocking Options 197
- 4–72 Rev. 0 198
- Rev. 0 4–73 199
- 4–74 Rev. 0 200
- 4.5 Buffering 201
- Figure 4-26. Clock Slip 202
- 4.5.1 Buffer Size 203
- 4.5.1.1 Doppler 204
- 4.5.1.2 Plesiochronous 205
- 4.5.1.4 Total Buffer Length 206
- 4.5.2.1 Bits to Seconds 206
- 4.5.2.2 Seconds to Bits 206
- 4.6 Initial Defaults 207
- 4–84 Rev. 0 210
- Chapter 5 211
- THEORY OF OPERATION 211
- 5.2.2 Theory of Operation 212
- Rev. 0 5-3 213
- 5-4 Rev. 0 214
- 5.2.3 Remote Baud Rate 215
- 5.2.4 Remote Address 215
- 5.3 Modulator 216
- 5.3.2 Theory of Operation 217
- 5-8 Rev. 0 218
- 5.3.3.1 BPSK Encoding 219
- 5.3.3.2 QPSK Encoding 219
- 5.4 Demodulator 220
- 5.4.2 Theory of Operation 221
- 5-12 Rev. 0 222
- 5.5 Decoder 223
- 5-14 Rev. 0 224
- Chapter 6 225
- SYSTEM CHECKOUT 225
- 6.2 Interface Checkout 226
- the Carrier Mode 227
- 6.2.2 Demodulator Checkout 230
- 6.2.3 ODU Checkout 230
- WITH NOISE 232
- WITHOUT NOISE 232
- 6.3 Fault Isolation 233
- 6.3.1 System Faults/Alarms 233
- Table 6-2. Fault Tree 234
- 6.3.2 Faults/Alarms Display 237
- 6.3.3 Faults/Alarms Analysis 237
- 6.3.3.1 Transmitter Faults 238
- 6.3.3.2 Receiver Faults 239
- 6.3.3.6 ODU Faults 243
- Appendix A 245
- A.1.1 FAST System Theory 246
- A.1.2 Implementation 246
- A.1.2.1 Activation Procedure 247
- A–4 Rev. 0 248
- Rev. 0 A–5 249
- A.2 Interface Options 250
- Rev. 0 A–7 251
- A.2.1.1 Local AUPC 252
- Rev. 0 A–9 253
- A.2.1.2 Remote AUPC 254
- A.2.1.3 Theory of Operation 254
- A.2.1.3.5 Buffer Operation 255
- A–12 Rev. 0 256
- A.2.1.3.8 Non-ASYNC Operation 257
- AL END REM 259
- (See Note) 264
- A.2.2 Decoder 266
- A.2.2.1 Sequential Decoder 266
- Rev. 0 A–23 267
- A.2.2.2 Viterbi Decoder 268
- A.2.2.2.1 Specifications 269
- A.2.2.3 Reed-Solomon Decoder 270
- Rev. 0 A–27 271
- Rev. 0 A–29 273
- A–30 Rev. 0 274
- A.3 Reed-Solomon Option 275
- A.3.1 Reed-Solomon Codec 275
- A.3.1.1 Specifications 276
- A.3.1.2 Theory of Operation 277
- A.3.1.3 Reed-Solomon Encoder 277
- A–34 Rev. 0 278
- Rev. 0 A–35 279
- A.3.1.4 Reed-Solomon Decoder 280
- Rev. 0 A–37 281
- Overhead Type Data Rate 281
- ASYNC 2.4 to 2048 kbit/s 281
- A.3.1.6 Unpacking 282
- A.3.1.7 Installation 282
- Rev. 0 A–39 283
- A–40 Rev. 0 284
- Appendix B 285
- REMOTE CONTROL OPERATION 285
- B.2.1 Remote Control 286
- B.2.2 Monitored Signals 286
- B.2.3 Faults Monitored 287
- B.2.4 Start Character 287
- B.2.5 Device Address 287
- B.2.6 Command/Response 288
- B.2.7 End Character 288
- B.3.1 Modulator 289
- B–6 Rev. 0 290
- B.3.2 Demodulator 291
- B–8 Rev. 0 292
- B.3.3 Interface 293
- B–10 Rev. 0 294
- Rev. 0 B–11 295
- B–12 Rev. 0 296
- B.4 System 297
- B–14 Rev. 0 298
- Commands 299
- B–16 Rev. 0 300
- B.6 Status Commands/Responses 301
- B–18 Rev. 0 302
- Rev. 0 B–19 303
- B–20 Rev. 0 304
- Rev. 0 B–21 305
- B–22 Rev. 0 306
- Rev. 0 B–23 307
- B–24 Rev. 0 308
- B.7 Stored Faults 309
- B–26 Rev. 0 310
- Rev. 0 B–27 311
- B–28 Rev. 0 312
- Rev. 0 B–29 313
- B–30 Rev. 0 314
- Rev. 0 B–31 315
- B–32 Rev. 0 316
- Rev. 0 B–33 317
- B–34 Rev. 0 318
- Rev. 0 B–35 319
- B–36 Rev. 0 320
- Rev. 0 B–37 321
- B–38 Rev. 0 322
- Rev. 0 B–39 323
- B–40 Rev. 0 324
- Glossary 325
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