Comtech EF Data DMD1050 - Manual (Page 10)

Table of Contents Revision 9
DMD1050 Satellite Modem Board MN-DMD1050
iv
3.3.5 Connecting the Terminal .......................................................................................................................... 3–7
3.3.6 Terminal Screens ...................................................................................................................................... 3–8
3.4 Modem Remote Communications (RLLP) ............................................................................................. 3–8
3.4.1 RLLP Protocol Structure ........................................................................................................................... 3–8
3.5 Modem Setup for Ethernet M&C (J10) ................................................................................................ 3–8
3.6 M&C Default/Reset Plug Settings (JP5 & JP6) ...................................................................................... 3–9
3.7 Ethernet Data Interface – (J11) ............................................................................................................ 3–9
3.8 Internal Clock ................................................................................................................................... 3–13
3.9 Loopback Features (Terrestrial & IF) .................................................................................................. 3–14
3.10 DMD1050 Clocking Options ............................................................................................................... 3–17
3.10.1 TX Clock Options ................................................................................................................................ 3–17
3.10.2 RX Buffer Clock Options ..................................................................................................................... 3–19
3.10.3 RX SAT Clock ...................................................................................................................................... 3–19
3.10.4 SCTE: Serial Clock Transmit External .................................................................................................. 3–19
3.10.5 SCT: Serial Clock Transmit .................................................................................................................. 3–19
3.11 Ethernet Data Interface .................................................................................................................... 3–20
3.12 Reed-Solomon Codec ........................................................................................................................ 3–20
3.12.1 Reed-Solomon Operation in the DMD1050 ....................................................................................... 3–20
3.12.2 Reed-Solomon Code Rate .................................................................................................................. 3–20
3.12.3 Interleaving ........................................................................................................................................ 3–21
3.13 DMD1050 Automatic Uplink Power Control (AUPC Operation) .......................................................... 3–22
3.13.1 Radyne AUPC ..................................................................................................................................... 3–22
3.13.2 EF AUPC ............................................................................................................................................. 3–23
3.13.3 Near Side AUPC .................................................................................................................................. 3–23
3.14 Asynchronous Overhead Operation (J1) ............................................................................................ 3–25
3.15 Standard IBS ES to ES Mode .............................................................................................................. 3–27
3.16 Enhanced Asynchronous Mode (Radyne Proprietary) ........................................................................ 3–28
3.17 Satellite Control Channel (SCC) - J1 .................................................................................................... 3–28
3.17.1 SCC Framing Structure ....................................................................................................................... 3–29
3.17.2 Aggregate Data Rate .......................................................................................................................... 3–30
3.17.3 Overhead Rate Comparison ............................................................................................................... 3–31
3.17.4 Actual Overhead Rate Calculation ..................................................................................................... 3–32
3.17.5 SCC Overhead Channel Setup ............................................................................................................ 3–33
3.18 DMD1050 ID Codes (Feature Upgrades) ............................................................................................ 3–35
3.19 Strap Codes ...................................................................................................................................... 3–35