Comtech EF Data SNM-1000 - Manual (Page 12)

SNM-1000 Node Control Modem Revision 3
Preface MN/SNM1000.IOM
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Figures
Figure 1-1. SNM-1000 Block Diagram .................................................................................................................1–2
Figure 1-2. Typical Installation..............................................................................................................................1–3
Figure 1-3. Typical Spectral Occupancy................................................................................................................1–9
Figure 1-4. SNM-1000 Dimensional Envelope .....................................................................................................1–10
Figure 2-1. Installation of the Mounting Bracket...................................................................................................2–3
Figure 2-2. SNM-1000 Rear Panel ........................................................................................................................2–5
Figure 3-1. SNM-1000 Front Panel View..............................................................................................................3–1
Figure 3-2. Keypad ................................................................................................................................................3–3
Figure 3-3. Main Menu ..........................................................................................................................................3–5
Figure 3-4. Baseband Loopback ............................................................................................................................3–17
Figure 4-1. DAC Block Diagram...........................................................................................................................4–2
Figure 4-2. Modulator Block Diagram ..................................................................................................................4–7
Figure 4-3. Demodulator Block Diagram ..............................................................................................................4–11
Figure 5-1. Typical Output Spectrum (with Noise) ...............................................................................................5–10
Figure 5-2. Typical Output Spectrum (Without Noise) .........................................................................................5–10
Figure 5-3. Typical Eye Constellations..................................................................................................................5–13
Tables
Table 1-1. System Specifications...........................................................................................................................1–5
Table 1-2. Environmental and Physical .................................................................................................................1–6
Table 1-3. Burst Mode Operating Specifications...................................................................................................1–7
Table 1-4. Continuous Mode Operating Specifications .........................................................................................1–7
Table 1-5. Viterbi Performance .............................................................................................................................1–7
Table 2-1. Rear Panel Connectors..........................................................................................................................2–4
Table 2-2. Fault Connector and Pinouts (J7) .........................................................................................................2–6
Table 2-3. SNM-1000 User Port Pinout and Signals .............................................................................................2–7
Table 2-4. AUX 1 Connector and Pinouts (J9) ......................................................................................................2–8
Table 2-5. Alarms Connector and Pinouts (J10) .....................................................................................................2–9
Table 3-1. SNM-1000 Front Panel Indicators........................................................................................................3–2
Table 4-1. Modulator Specifications......................................................................................................................4–10
Table 4-2. Demodulator Specification ...................................................................................................................4–13
Table 5-1. SNM-1000 Faul Tree............................................................................................................................5–3
Table 5-2. Conversion to S/N and E
b
/N
0
................................................................................................................5–9