Comtech EF Data SNM-1001L manuals

Comtech ef data SNM-1001L User Manual (344 pages)

Brand: Comtech-ef-data | Category: Equipment | Size: 6.48 MB |

English

Table of contents

SNM-1001L

1

Errata A

3

3.2.9 AC Power Connector

4

Customer Support

6

Table of Contents

7

Preface MN/SNM1001L.IOM

10

Figures

16

About this Manual

18

Related Documents

18

Conventions and References

18

Cautions and Warnings

18

Metric Conversion

19

Trademarks

19

ELECTRICAL SAFETY

20

Installation

21

Warranty Policy

23

Limitations of Warranty

23

Exclusive Remedies

23

Disclaimer

23

Chapter 1. INTRODUCTION

25

• BUC FSK Communications

25

Yes FAST

26

• Reed-Solomon COdec *

28

• 8-PSK

29

1.6.3.1 BPSK Encoding

31

1.6.3.2 QPSK Encoding

31

1.6.3.4 8-PSK Encoding

32

1.7.1 Overview

33

1.7.2 Functional Description

34

1.8.1 Overview

35

1.8.2 Functional Description

36

1.9 Dimensional Envelope

38

1.10 New in this Release

39

Chapter 2. INSTALLATION/

41

UPGRADES

41

2.2 Installation

42

2.3.1 Reed-Solomon PCB

44

2.3.1.1 Unpacking

44

2.3.1.2 Installation

44

Reed-Solomon

45

Cards (TX or RX in

45

Either Slot)

45

2.3.2.1 Unpacking

46

2.3.2.2 Installation

46

Installation MN/SNM1001L.OM

47

2.5 Hardware Upgrades

49

2.6 Flash Upgrading

51

Chapter 3. CONNECTOR PINOUTS

53

Chapter 4. FRONT PANEL

65

4.1.1 LED Indicators

66

4.1.2 Front Panel Keypad

67

4.2 Menu System

68

4.2.1 Revision Emulation

69

4.2.2 Menu Tree

70

SNM-1001L CUSTOM

71

VER: X.X.X

71

FUNCTIONAL SELECT

71

CONFIGURATION

71

TX-X CODE/DATA RATE

72

4.8 to 2500 kbps

73

7.2 to 3750 kbps

73

9.6 to 5000 kbps

73

4.8 to 2386.363 kbps

73

TX-IF FREQUENCY

74

1200.0000 MHz

74

TX TERMINAL FREQUENCY

74

5845.0000 MHz

74

↑] and [↓] with arrow

75

SCRAMBLER

76

DIFF. ENCODER

76

CARRIER MODE

77

MODEM REFERENCE

77

ODU OUTPUT DELAY

79

ODU 10 MHz REF

79

RS ENCODER

80

RX-X CODE/DATA RATE

81

This is a Test Mode

84

IF LOOP BACK

85

BER THRESHOLD

86

SWEEP CENTER

87

SWEEP RANGE

87

CORRECTION_OFF

89

TX CLOCK SOURCE

90

TX CLOCK PHASE

91

EXT-CLK FREQ

91

RX CLOCK PHASE

92

B-BAND LOOP BACK

93

INTRFC LOOP BACK

94

BUFFER SIZE (CONDITIONAL)

95

BUFFER CENTER

95

TX DATA FAULT (CONDITIONAL)

96

(Conditional)

97

NOMINAL

100

MAXIMUM

100

Card is installed

105

IMPORTANT

106

(CONDITIONAL)

107

FUNCTION SELECT

113

STORED FLTS/ALMS

113

AUPC ENABLE (CONDITIONAL)

119

ASSIGN TRANSMIT FILTERS

123

TX TERMINAL LO

125

0 MHz MIX:

125

Scrambler Type Description

127

Normal Mode

129

ASSIGN RECEIVE FILTERS

131

RX TERMINAL LO

133

O MHz MIX:

133

OPERATION MODE

144

YEAR DISPLAY

144

2 - DIGIT

144

TEST MODE STATUS

144

EXT AGC: MIN PWR

148

10.0 Volts

148

MASTER RESET

148

HARD/SOFT

148

ASYNC channel

149

MODEM OPTIONS

150

CARD #1 OPTIONS

152

CARD #2 OPTIONS

152

CARD #3 OPTIONS

153

LOCAL MODEM AUPC

153

CONFIGURATION CODE - MODEM

155

4.4 Custom Modem Defaults

159

Chapter 5. MODEM TYPE

163

Modem Types MN/SNM1001L.IOM

164

5.2 Custom Operation

165

5.3 Reed-Solomon Modes

166

Chapter 6. CLOCKING AND RX

167

BUFFERING SETTINGS

167

6.2 Buffering

168

6.2.1 Buffer Size

168

Figure 6-3

171

Figure 6-4. Doppler Shift

172

6.3 Doppler

173

6.4 Plesiochronous

174

6.5 Frame/Multiframe Length

175

6.5.2 Total Buffer Length

175

Chapter 7. FORWARD ERROR

177

CORRECTION (FEC)

177

4.8 kbps to 2386 Mbps

178

7.2 kbps to 3750 kbps

178

BPSK/OQPSK Viterbi Decoding

183

Eb/No (dB)

183

UNCODED 1:1 BPSK OQPSK

185

Chapter 8. SYSTEM CHECKOUT

191

8.1.1 Interface Checkout

192

8.1.2 Modulator Checkout

193

WITH NOISE

196

WITHOUT NOISE

196

Chapter 9. FAULT ISOLATION

197

9.1.1 System Faults/Alarms

198

9.1.3.1 Faults Tree

199

9.1.3.2 Modulator Faults

201

9.1.3.3 Demodulator Faults

202

9.1.3.4 Outdoor Unit

203

POWER CONTROL

205

MODEM A MODEM B

207

10.2.1.1 Remote AUPC

209

10.2.3 MUX Operation

210

10.2.4 DEMUX Operation

210

10.2.5 Buffer Operation

210

Chapter 11. ASYMMETRICAL

213

LOOP TIMING

213

SYSTEM TOPOLOGY (FAST)

217

Select Features:

218

Verify Upgrade

220

12.2 Variable Data Rates

221

Chapter 13. BUC FSK

223

COMMUNICATIONS

223

13.2 Message Structure

224

13.3 Power Class

225

Chapter 14. DECODER

227

° phase ambiguity of the

228

14.1.2 Viterbi Decoder

229

Decoder MN/SNM1001L.IOM

230

Chapter 15. REED-SOLOMON

233

REED-SOLOMON

234

15.1.3 Reed-Solomon Encoder

235

15.1.4 Reed-Solomon Decoder

237

Appendix A SPECIFICATION

239

A.2 Specification Summary

240

Dual: dual sideband

241

A.5.1 Digital Data Rate

243

PTCM 2/3 8PSK

244

Turbo Product 3/4 8-PSK

244

Capacitively coupled

245

A.5.6 Modulator Phase Noise

246

≤ -25 dBc and carrier

248

A.5.25 ODU DC Current Sense

249

A.6 Encoding

249

A.6.1 BPSK Encoding

249

15.6.1 QPSK Encoding

249

A.6.2 OQPSK Encoding

250

A.6.3 8-PSK Encoding

250

A.7.1 Digital Data Rate

251

PTCM 2/3 8-PSK

252

A.7.3 Descrambling Types

253

A.7.4 Differential Decoder

253

A.7.5 BPSK Bit Ordering

253

300L_levels.xls

256

(Optional)

257

Reed Solomon(Optional)

258

A.8.8 BER Threshold

259

A.9 Acquisition Time

260

A.9.3 AGC Output

261

A.10.13 Switch Faults

264

A.11 Decoding

264

A.11.1 BPSK Decoding

264

A.11.2 QPSK Decoding

264

A.11.4 8-PSK Decoding

265

A.12.1 EIA-232 Specification

266

A.13.1 AUPC Parameters

270

A.13.3 Turbo AUPC

270

A.14 System Specifications

271

A.14.1 Loopback Modes

271

A.14.2 Test Modes

271

A.14.3 Remote Control

272

A.14.4 Modem Remote Address

272

A.14.5 Monitored Signals

272

A.15 Stored Faults

273

A.16 Stored Configurations

273

A.17 Interoperability Modes

273

Appendix B. REMOTE CONTROL

275

OPERATION

275

B.2 Message Structure

276

B.2.1 Start Character

276

B.2.2 Device Address

276

B.2.3 Command/Response

277

B.2.4 End Character

278

Command:

280

is added to the nominal

280

(MPO_)

280

Modulator Output Power

288

AUPC Local Power Enable

289

B.4.4 Fault Status

294

B.4.2 Error Performance

295

B.5 Stored Faults

298

Appendix C. BURST MODE

315

MODULATOR OPERATION

315

C.2.1 Digital Data Rate

316

Capacitively coupled

317

C.2.8 Phase Noise

318

C.2.10 Transmit IF Power

318

C.2.13 Spurious Emissions

319

C.2.17 Transmit Preamble

320

C.2.18 Transmit Packet

320

C.2.19 Transmit Postamble

320

• Unique word detector

321

C.4.1 Digital Data Rate

322

C.4.3 Descrambling Types

322

C.4.12 Acquisition Time

324

C.4.15 Collision Recovery

325

C.5.1 Loopback Modes

325

C.5.1.1 Test Modes

325

C.5.2 Remote Control

326

C.5.3 Modem Remote Address

326

C.5.4 Monitored Signals

326

C.5.5 Faults Monitored

326

C.5.6 Stored Faults

330

C.5.7 Stored Configurations

330

Glossary

333

Glossary MN/SNM1001L.IOM

336

METRIC CONVERSIONS

343

Units of Length

343

Temperature Conversions

343

Units of Weight

343

480 • 333 • 2200 PHONE

344

480 • 333 • 2161

344

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