Comtech EF Data SDM-2020 - Manual (Page 7)

SDM-2020 Satellite Modulator Revision 7
Preface MN/SDM2020M.IOM
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Figures
Figure 1-1. Modulator Block Diagram ................................................................................................ 1–1
Figure 2-1. Dimensional Envelope of Units Prior to September 1, 1999 ............................................ 2–6
Figure 2-2. Diemensional View for Units with Improved Chassis ...................................................... 2–7
Figure 3-1. Installation of the Optional Mounting Bracket, KT/6228-1.............................................. 3–3
Figure 3-2. Rear View of SDM-2020M Rack Installed ........................................................................ 3–4
Figure 3-3. Typical Data Interface Module.......................................................................................... 3–5
Figure 4-1. Rear Panel ......................................................................................................................... 4–1
Figure 5-1. Front Panel View............................................................................................................... 5–1
Figure 5-2. Keypad .............................................................................................................................. 5–3
Figure 5-3. SDM-2020 Modulator Menu Tree..................................................................................... 5–6
Figure 6-1. 204 Byte Parallel Format................................................................................................... 6–2
Figure 6-2. 204 Byte Serial Format ..................................................................................................... 6–2
Figure 7-1. RS-422 Interface Module PCB ......................................................................................... 7–3
Figure 8-1. LVDS Interface Module PCB ........................................................................................... 8–3
Figure 9-1. ASI/RS-422 Interface Block Diagram .............................................................................. 9–2
Figure 9-2. ASI Module Assembly ...................................................................................................... 9–2
Figure 10-1. 187 Byte (No framing) Serial Format ........................................................................... 10–4
Figure 10-2. 188 Byte Serial Format ................................................................................................. 10–4
Figure 10-3. 204 Byte Serial Format ................................................................................................. 10–4
Figure 10-4. 204 Byte DBS Serial Format..........................................................................................10-5
Figure 10-5. ECL/HSSI Connector, Pin Locator ............................................................................... 10–7
Figure 10-6. Nominal Interface Timing ........................................................................................... 10–10
Figure 10-7. Interface Timing .......................................................................................................... 10–10
Figure 11-1. G.703 Interface Block Diagram .................................................................................... 11–2
Figure 11-2. G.703 Interface Assembly (PCB).................................................................................. 11–3
Figure 11-3. Co-Located Modulator and Demodulator ..................................................................... 11–9
Figure 12-1. SMPTE-310M Interface Block Diagram ...................................................................... 12–2
Figure 12-2. Module Assembly, Part No. AS/6175-2........................................................................ 12–3
Figure 13-1. ASI/LVDS Interface Block Diagram ............................................................................ 13–2
Figure 13-2. ASI/LVDS Jumper Selection ........................................................................................ 13–5