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Operation SDM-309B Satellite Modem
3–38 MN/U-SDM309B Rev. #
Time Time of day set/display function.
The current time that the modem is set for is displayed when
selected. To set the modem time press the “ENTER” key and
use the right and left arrow keys to position the flashing
cursor over the parameter to be changed. Use the up and
down arrow keys to change the parameter to the desired
value. Once the parameters are displayed as desired press
the “ENTER” key to set the time.
Date Date set/display.
Follow the same procedure as outlined for the time function
to view and set the date.
LAMP TEST ?? Lamp test function used to illuminate all the front panel
indicators for three seconds.
Press the “ENTER” key to turn on all of the front panel
indicators for three seconds.
Address/Parity/Baud Rate The current modem address, parity selection and selected
baud rate of the modem is displayed. This in only a monitor
function. No changes can be made from this menu.
On entry the currently set address of the modem will be
displayed (0 to 255) on the first line. The currently set parity,
even or odd, will be displayed on the second line. The
currently set baud rate from 110 to 9600 will also be
displayed on the second line.
POW ADJ. Modulator Power Adjust Offset.
Allows the operator to offset the modulator output power
readout in the configuration menu. This will be the highest
modulator power that will be displayed and programmed.
This feature does not actually change the modulator power
level. The function is to change the actual reading to display
an offset value in the monitor. The modulator Power Offset
can be set between +20.0 to -20.0 dB in 0.5 dB increments.
Note: The maximum output power adjust, set in this window,
must match the maximum output power of the modulator
installed in the modem. In a switching system the backup
modem must be set the same as the prime modem or a fault
will occur.
OP MODE Operation Mode. Programs the modem operation for TX only,
RX only, or Duplex operation.
On entry the flashing cursor is on the first character of the
display. Use the arrow keys to select TX only, RX only, or
Duplex. Press the “ENTER” key to execute the change.
When TX only or RX only is selected, the appropriate faults
are masked from the Faults and Stored Faults menu.
Fast ACQ Fast Acquisition function.
Turns the fast acquisition and directed sweep function ON or
OFF. When the fast acquisition has been turned OFF, the
Swp_Cntr, SWP_Rnge and SWP_DIR windows in the
configuration menu are disabled and do not appear. Also, in
the “Monitor” menu, Swp_Freq will not appear. When turned
“OFF” fast acquisition does not occur.
- SDM-309B 1
- SDM-309BSDM-309B 1
- Warranty Policy 3
- Limitations of Warranty 3
- Exclusive Remedies 3
- Disclaimer 3
- About this Manual 4
- Cautions and Warnings 4
- Metric Conversion 4
- Trademarks 5
- Customer Support 6
- Table of Contents 8
- Rev. 0 vii 10
- Rev. 0 ix 12
- Chapter 1 14
- INTRODUCTION 14
- 1-1–2 MN/U-SDM309B Rev. # 15
- Figure 1-1 SDM-309B Modem 16
- 1-1–4 MN/U-SDM309B Rev. # 17
- MN/U-SDM309B Rev. # 1-1–5 18
- 1-1–6 MN/U-SDM309B Rev. # 19
- 1.4 System Specification 20
- 1-1–10 MN/U-SDM309B Rev. # 23
- MN/U-SDM309B Rev. # 1-1–11 24
- 1-1–12 MN/U-SDM309B Rev. # 25
- Chapter 2 26
- INSTALLATION 26
- Figure 2-1 Rear Panel View 28
- 2.2.1 Data I/O 29
- 2.2.2 Remote (J6) 29
- 2.2.3 Fault (J7) 29
- 2.2.4 IF Output (CP1) 30
- 2.2.5 IF Input (CP2) 30
- 2.2.6 AC Power 30
- 2.2.7 GND 30
- 2.3 System Requirements 30
- 2.4 System Installation 31
- Chapter 3 32
- OPERATION 32
- 3.1.3 Front Panel Controls 33
- Figure 3-1 Front Panel View 34
- 3.1.4 Configuration 35
- 3.1.4.1 MOD Configuration 35
- 3.1.4.2 DEMOD Configuration 36
- 3.1.5 Monitor 41
- 3.1.6 Faults 41
- 3.1.7 Stored Faults 43
- 3.1.8 Utility 43
- Figure 3-2 Menu Tree 47
- Figure 3-3 Menu Tree 48
- Figure 3-4 Menu Tree 49
- Figure 3-5 Menu Tree 50
- Figure 3-6 Menu Tree 51
- Figure 3-7 Menu Tree 52
- Figure 3-8 IF Loopback 53
- Figure 3-9 RF Loopback 54
- 3–24 MN/U-SDM309B Rev. # 55
- MN/U-SDM309B Rev. # 3–25 56
- 3.2.1 General 57
- 3.2.2 Configuration 57
- 3.2.2.1 MOD Configuration 58
- 3.2.2.2 DEMOD Configuration 59
- 3.2.3 Monitor 65
- 3.2.4 Faults 66
- 3.2.5 Stored Faults 67
- 3.2.6 Utility 68
- Figure 3-12 Menu Tree 71
- Figure 3-13 Menu Tree 72
- Figure 3-14 Menu Tree 73
- Figure 3-15 Menu Tree 74
- Figure 3-16 Menu Tree 75
- Figure 3-17 Menu Tree 76
- 3–46 MN/U-SDM309B Rev. # 77
- Chapter 4 78
- M&C AND INTERFACES 78
- Connect JP7 to RS232 79
- MN/U-SDM309B Rev. # 4-4–3 80
- 4.1.2.2 Remote Baud Rate 81
- 4.1.2.3 Remote Address 81
- 4.1.2.4 Battery 81
- 4.1.2.8 Utility Defaults 83
- 4.2 Digital Interfaces 83
- 4.2.1 IBS/M1200P Interface 84
- 4.2.1.2 Data Interface 84
- 4.2.1.3 Transmit Multiplexer 84
- 4-4–8 MN/U-SDM309B Rev. # 85
- MN/U-SDM309B Rev. # 4-4–9 86
- 4-4–10 MN/U-SDM309B Rev. # 87
- Figure 4-4 IBS Fault Tree 88
- Figure 4-5 Jumper Table 89
- 4.2.1.4 Receive Multiplexer 90
- 4-4–18 MN/U-SDM309B Rev. # 95
- 4.2.1.9.7 Send Data (J7) 98
- 4.2.1.9.8 Receive Data (J8) 99
- MN/U-SDM309B Rev. # 4-4–23 100
- 4-4–24 MN/U-SDM309B Rev. # 101
- 4.2.2.2 Data Interface 102
- 4.2.2.3 Transmit Multiplexer 102
- 4.2.2.7 Backward Alarm 103
- MN/U-SDM309B Rev. # 4-4–27 104
- 4-4–28 MN/U-SDM309B Rev. # 105
- MN/U-SDM309B Rev. # 4-4–29 106
- 4-4–30 MN/U-SDM309B Rev. # 107
- MN/U-SDM309B Rev. # 4-4–31 108
- MN/U-SDM309B Rev. # 4-4–35 112
- 4.2.2.10.11 Faults (J11) 115
- 4.2.2.11 Rear Panel Switches 116
- 4.2.2.11.1 Drop Data Input 116
- 4.2.2.11.2 Drop Data Output 116
- 4.2.2.11.3 Insert Data Input 116
- 4-4–40 MN/U-SDM309B Rev. # 117
- MN/U-SDM309B Rev. # 4-4–41 118
- Table 4-3 119
- MN/U-SDM309B Rev. # 4-4–43 120
- 4-4–44 MN/U-SDM309B Rev. # 121
- 4.3.1 Master/Slave 122
- 4.3.1.2 Master/Slave G.703 123
- 4.3.1.3 Master/Slave X.21 123
- 4.3.2 Master/Master 123
- Chapter 5 125
- THEORY OF OPERATION 125
- Figure 5-1 Modulator Card 127
- 5-5–4 MN/U-SDM309B Rev. # 128
- MN/U-SDM309B Rev. # 5-5–5 129
- 5.1.3 Theory of Operation 130
- 5.2.1 General Description 131
- MN/U-SDM309B Rev. # 5-5–9 133
- 5-5–10 MN/U-SDM309B Rev. # 134
- MN/U-SDM309B Rev. # 5-5–11 135
- 5-5–12 MN/U-SDM309B Rev. # 136
- MN/U-SDM309B Rev. # 5-5–13 137
- 5.2.3 Theory Of Operation 138
- 5.2.3.1 Demod Processor 138
- 5.2.3.2 Viterbi Decoder 138
- 5.3 Demodulator 139
- 5.3.1 General Description 139
- 5.3.2 Specifications 140
- Figure 5-9 Demodulator Card 141
- 5-5–18 MN/U-SDM309B Rev. # 142
- 5.3.3 Theory of Operation 143
- 5.4.1 General 143
- 5.4.2 Reacquisition 144
- 5.4.3 Fast Acquisition 145
- 5.4.4 Directed Sweep 145
- Chapter 6 146
- MAINTENANCE 146
- 6-6–2 MN/U-SDM309B Rev. # 147
- MN/U-SDM309B Rev. # 6-6–3 148
- 6-6–4 MN/U-SDM309B Rev. # 149
- Table 6-1 150
- 6-6–6 MN/U-SDM309B Rev. # 151
- MN/U-SDM309B Rev. # 6-6–7 152
- 6.1.4 Test Points 153
- Figure 6-6 154
- Figure 6-7 155
- Figure 6-8 156
- Figure 6-9 157
- 6.2 Fault Isolation 158
- 6.2.1 Modulator Faults 158
- 6.2.2 Demodulator Faults 159
- Table 6-2 162
- 6-6–18 MN/U-SDM309B Rev. # 163
- MN/U-SDM309B Rev. # 6-6–19 164
- 6-6–20 MN/U-SDM309B Rev. # 165
- MN/U-SDM309B Rev. # 6-6–21 166
- 6.4 Module Replacement 167
- 6.5 Module Identification 167
- 6.6 Repacking For Shipment 167
- Table 6-3 168
- Appendix A 169
- DATA RATES AND FILTERS 169
- 1.2 Variable Rate Filters 170
- MN/U-SDM309B Rev. # A–3 171
- A–4 MN/U-SDM309B Rev. # 172
- MN/U-SDM309B Rev. # A–5 173
- A–6 MN/U-SDM309B Rev. # 174
- MN/U-SDM309B Rev. # A–7 175
- A–8 MN/U-SDM309B Rev. # 176
- MN/U-SDM309B Rev. # A–9 177
- Appendix B 178
- SATELLITE MODEM REMOTE 178
- 3.4 End Character 179
- 3.1 Start Character 179
- 3.2 Device Address 179
- 3.3 Command/Responses 179
- 4.2.2 Demodulator Rate 183
- 4.2.4 RF Loop-back (ON/OFF) 184
- 4.2.5 IF Loop-back (ON/OFF) 184
- 4.2.7 Sweep Reacquisition 185
- 4.2.8 Fast Acquisition Mode 185
- 4.2.9 Sweep Center Frequency 185
- 4.2.10 Sweep Width Range 186
- 4.2.11 Sweep Direction 186
- 4.3.12 Interface Buffer Size 188
- 4.3.13 Transmit Data Fault 189
- 4.3.14 Receive Data Fault 189
- 4.3.15 Drop Data Format 189
- 4.3.16 Insert Data Format 189
- 4.4.1 Time Of Day 191
- 4.4.2 Date 191
- 5.3 Modulator Status 195
- 5.4 Demodulator Status 195
- 5.5 Common Equipment Status 196
- 5.8 Bit Error Rate Status 197
- 5.8.1 Raw BER 197
- 5.8.2 Corrected BER 197
- 5.8.3 Corrected BER Log 197
- 5.9 Eb/N0 Status 198
- 5.10 Modulator Rate Status 198
- 5.11 Demodulator Rate Status 198
- 5.13 Current Sweep Value 199
- 5.16 Stored Faults 199
- MN/U-SDM309B Rev. # B-B–23 200
- B-B–28 MN/U-SDM309B Rev. # 205
- 5.20 Change Status 206
- 5.21 Equipment Type 206
- B-B–30 MN/U-SDM309B Rev. # 207
- Appendix C 208
- EXTERNAL CHANNEL UNIT 208
- C-C–2 MN/U-SDM309B Rev. # 209
- MN/U-SDM309B Rev. # C-C–3 210
- C-C–4 MN/U-SDM309B Rev. # 211
- MN/U-SDM309B Rev. # C-C–5 212
- C-C–6 MN/U-SDM309B Rev. # 213
- MN/U-SDM309B Rev. # C-C–7 214
- C-C–8 MN/U-SDM309B Rev. # 215
- MN/U-SDM309B Rev. # C-C–9 216
- C-C–10 MN/U-SDM309B Rev. # 217
- 2.0 Digital Interfaces 218
- 2.1.1 Functional Description 218
- C-C–12 MN/U-SDM309B Rev. # 219
- MN/U-SDM309B Rev. # C-C–13 220
- C-C–14 MN/U-SDM309B Rev. # 221
- 2.1.2 Connector Pinouts 223
- 2.1.3 Specification 223
- 2.2 V.35 Interface 224
- 2.2.1 Functional Description 224
- MN/U-SDM309B Rev. # C-C–19 226
- C-C–20 MN/U-SDM309B Rev. # 227
- 2.2.2 Connector Pinouts 228
- 2.2.3 Specification 228
- 3.0 Front Panel Operation 229
- 3.1 Configuration 229
- 3.2 Monitor 232
- 3.3 Faults 232
- 3.4 Stored Faults 233
- 3.5 Utility 233
- Figure C-13 Menu Tree 235
- Figure C-14 Menu Tree 236
- Figure C-15 Menu Tree 237
- MN/U-SDM309B Rev. # C-C–31 238
- Appendix D 239
- SOFTWARE CHANGE 239
- SPECIFICATIONS 239
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