Comtech-ef-data SNM-1002 Manual do Utilizador Página 39
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SNM-1002 LinkSync Modem Revision 2
Installation MN/SNM1002.OM
2–9
2.3.5 External Reference (CP3)
CP3 is a BNC connector for an external reference. The input impedance is 75Ω. For
normal operation, the reference signal is
≥ 0 dBm.
2.3.6 AC Power Connector
The AC power is supplied to the SNM-1002 by a standard, detachable, non-locking,
3-prong power cord. Refer to the following listing for AC power specifications.
Input power
50W max.
Input voltage
90 to 264 VAC, 47 to 63Hz.
Note: Unit switches ranges automatically.
Connector type
IEC
Fuse protection
1A slo-blo line and neutral fusing 5 mm type fuses.
2.3.7 DC Power - Optional
For DC supplied units, the DC Power is supplied by terminal lugs installed on the back
panel. Refer to the following table for specifications
Input power
50W max.
Input voltage
38 to 64 VDC.
Connector type
Terminal Lug
Fuse protection
1A slo-blo 5 mm type fuses.
2.3.8 Ground Connector (GND)
A #10-32 stud on the rear panel of the modem is used for connecting a common chassis
ground among all equipment.
Note: The AC power connector provides the safety ground.
- LinkSync Modem 1
- LinkSync™ Modem 3
- Procedural Steps 4
- Preface MN/SNM1002.om 5
- Table of Contents 9
- Preface MN/SNM1002.OM 10
- Figures 12
- IMPORTANT 13
- Installation 15
- Warranty Policy 17
- Limitations of Warranty 17
- Exclusive Remedies 17
- Disclaimer 17
- Chapter 1. INTRODUCTION 19
- 1.2 Mode of Operation 20
- 1.2.1 Description 21
- Introduction MN/SNM1002.OM 22
- 1.3 Options 23
- 1.4 Specifications 24
- 1.4.1 Summary Specifications 24
- 1.5.1 BER Threshold 27
- 1.7 Dimensional Envelope 29
- Chapter 2. INSTALLATION 31
- 2.2 Installation 32
- Installation MN/SNM1002.OM 33
- 2.3 Rear Panel Connections 37
- 2.3.6 AC Power Connector 39
- 2.3.7 DC Power - Optional 39
- Chapter 3. OPERATION 41
- 3.1.1 LED Indicators 42
- 3.1.2 Front Panel Keypad 43
- 3.2 Menu System 44
- 3.3 Front Panel Menu 45
- 3.4 OPENING SCREEN 46
- CONFIGURATION 47
- MODULATOR 47
- Operation MN/SNM1002.OM 48
- SCRAMBLER 49
- DIFF. ENCODER 49
- CARRIER MODE 50
- NORMAL-MODULATED 50
- MODEM REFERENCE 50
- INTERNAL 50
- DEMODULATOR 51
- RX-IF FREQUENCY 51
- 70.000000 MHZ 51
- SWEEP RANGE 54
- 60000 HZ 54
- REACQUISITION 54
- 0 SECONDS 54
- INTERFACE 55
- TX CLOCK SOURCE 55
- SCT (INTERNAL) 55
- TX CLOCK PHASE 56
- EXT-CLK FREQ 56
- 1544.000 KHZ 56
- RX (SATELLITE) 57
- RX CLOCK PHASE 57
- BUFFER CLOCK 57
- B-BAND LOOP BACK 58
- BUFFER SIZE 59
- 0 (BYPASS) 59
- BUFFER CENTER 59
- 3.4.1.4 CONFIGURATION:SAVE 60
- 3.4.2.1 MONITOR:RAW BER 61
- 3.4.2.3 MONITOR:EB/NO 61
- 3.4.2.6 MONITOR:BUFFER FILL 62
- FUNCTION SELECT 63
- FAULTS/ALARMS 63
- + 64
- +-++ 64
- TX INTERFACE 65
- 65
- RX INTERFACE 66
- STORED FLTS/ALAMS 68
- TX INTERFACE X 70
- STORED TIME/DATE 70
- (FAULT LABEL) 70
- RX INTERFACE X 71
- UTILITY 73
- 3.4.5.1 UTILITY:MODULATOR 74
- 3.4.5.2 UTILITY:DEMODULATOR 76
- 3.4.5.3 UTILITY:INTERFACE 79
- 3.4.5.4 UTILITY:SYSTEM 83
- 3.4.5.4.1 SYSTEM:TIME/DATE 83
- 3.4.5.4.4 SYSTEM:REMOTE TYPE 84
- 3.4.5.4.9 SYSTEM:SELF TEST 86
- 3.4.5.4.14 SYSTEM:DEMO MODE 87
- 3.4.5.5 UTILITY:MODEM TYPE 88
- MODEM OPTIONS 91
- Chapter 4. THEORY OF 95
- 4.1.2 Uplink Power Control 97
- 4.2.1 Theory of Operation 98
- 4.3 Modulator 99
- 4.3.2 Theory of Operation 102
- ± 1 x 10 103
- ± 0.5 dB to 103
- 4.3.3.1 BPSK Encoding 104
- 4.3.3.2 QPSK Encoding 104
- 4.4 Demodulator 105
- 4.4.2 Theory of Operation 107
- Chapter 5 109
- MAINTENANCE 109
- 5.1.1 Interface Checkout 110
- 5.1.2 Modulator Checkout 111
- Maintenance MN/SNM1002.OM 113
- 5.1.3 Demodulator Checkout 114
- WITH NOISE 115
- WITHOUT NOISE 115
- 5.2 Fault Isolation 116
- 5.2.1 System Faults/Alarms 116
- 5.2.2 Faults/Alarms Display 120
- 5.2.3 Faults/Alarms Analysis 120
- 5.2.3.1 Modulator Faults 121
- 5.2.3.2 Demodulator Faults 122
- Appendix A. REMOTE CONTROL 127
- OPERATION 127
- A.2 Message Structure 128
- A.2.1 Start Character 128
- A.2.2 Device Address 128
- A.2.3 Command/Response 129
- A.2.4 End Character 129
- Command: 130
- A.3.2 Demodulator 132
- A.3.3 Interface 134
- A.3.4 System 136
- Modulator Output Power 138
- AUPC Local Power Enable 138
- ISP_xxxxxx'cr' 139
- A.4.1 Error Performance 147
- A.5 Stored Faults 151
- METRIC CONVERSIONS 169
- Units of Length 169
- Temperature Conversions 169
- Units of Weight 169
- 480 • 333 • 2200 PHONE 170
- 480 • 333 • 2161 170
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