Comtech EF Data CDM-750 Installation And Operation Manual page 14

CDM-750 Advanced High-Speed Trunking Modem
Table of Contents
Figure 4-1. Flash Update via Internet ....................................................................................................... 4-1
Figure 5-1. CDM-750 Front Panel View .................................................................................................. 5-1
Figure 5-2. Loopback Test Modes .......................................................................................................... 5-30
Figure 6-1. CDM-750 Home page ............................................................................................................ 6-7
Figure 6-2. Home | Contact Information page .......................................................................................... 6-8
Figure 6-3. Home | Customer Support page .............................................................................................. 6-9
Figure 6-4. Admin | Access page ............................................................................................................ 6-10
Figure 6-5. Admin | SNMP page ............................................................................................................ 6-12
Figure 6-6. Configuration | Modem page ................................................................................................ 6-13
Figure 6-7. Configuration | Utilities page ............................................................................................... 6-14
Figure 6-8. Status | Status page ............................................................................................................... 6-16
Figure 6-9. Status | Logs page ................................................................................................................. 6-17
Figure 6-10. Status | Info page ................................................................................................................ 6-18
Figure 6-11. Status | Firmware Info page ................................................................................................ 6-19
Figure 6-12. Status | ACM Status page ................................................................................................... 6-20
Figure 6-13. Status | IP Statistics page .................................................................................................... 6-21
Figure 6-14. Status | BB Statistics page .................................................................................................. 6-22
Figure 6-15. Interfaces page.................................................................................................................... 6-23
Figure 6-16. TxGraph pages (TxHours page shown) .............................................................................. 6-25
Figure 6-17. RxGraph pages (RxHours page shown) ............................................................................. 6-28
Figure 7-1. Downlink Margin vs. Average Link Availability .................................................................. 7-4
Figure 7-2. User Throughput vs. Time and Fades .................................................................................... 7-4
Figure 7-3. ACM-over-Satellite - Generic Example ................................................................................ 7-6
Figure 7-4. Single Hop Latency ................................................................................................................ 7-8
Figure 7-5. Spectral Efficiency vs. Ideal Es/No @ QEF ........................................................................ 7-11
Figure 7-6. Spectral Efficiency vs. Modem Es/No @ QEF (Pruned ModCods) .................................... 7-12
Figure 7-7. CDM-750 - ACM Congestion Control ................................................................................ 7-16
Figure 8-1. Conceptual Block Diagram .................................................................................................... 8-3
Figure 8-2. Conventional FDMA Link ..................................................................................................... 8-5
Figure 8-3. Same Link Using CDM-750 and DoubleTalk Carrier-in-Carrier ........................................... 8-6
Figure 8-4. Duplex Link Optimization ..................................................................................................... 8-6
Figure 8-5. DoubleTalk Carrier-in-Carrier Signals ................................................................................... 8-8
Figure 8-6. Carrier-in-Carrier Signal Processing Block Diagram............................................................. 8-9
Figure 9-1. Networking Loop with Switches ............................................................................................ 9-2
Figure 9-2. CDM-750 Ethernet Architecture Design ................................................................................ 9-3
Figure 9-3. Improper Use of External Switch with CDM-750 ................................................................. 9-3
Figure 10-1. DVB-S2 QPSK Packet Error Rate versus Es/No ............................................................... 10-3
Figure 10-2. DVB-S2 8PSK Packet Error Rate versus Es/No ................................................................ 10-4
Figure 10-3. DVB-S2 16APSK Packet Error Rate versus Es/No ........................................................... 10-5
Figure 10-4. DVB-S2 32APSK Packet Error Rate versus Es/No ........................................................... 10-6
Figure 11-1. G.703 E3/T3/STS-1 Plug-In Interface Card (PIIC) ............................................................ 11-1
Figure 11-2. G.703 E3/T3/STS-1 PIIC Block Diagram .......................................................................... 11-2
Figure 11-3. G.703 E3/T3/STS-1 PIIC Rear Panel View ....................................................................... 11-2
Figure B-1. CDM-750 Data Flow Diagram ............................................................................................. B-2
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