Comtech-ef-data SNM-1000 User Manual download pdf (Page 12)

SNM-1000 Node Control Modem Revision 3

Preface MN/SNM1000.IOM

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

................................................................................................................5–9

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Comtech-ef-data SNM-1000 User Manual Page 12

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