Operating instructions

DMD50 Universal Satellite Modem Technical Specifications
TM118 – Rev. 1.1 7-3
7.5 DMD50 Drop and Insert (Optional)
Terrestrial Data 1.544 Mbps or 2.048 Mbps, G.732/733
Line Coding AMI or B8ZS for T1 and HDB3 for E1
Framing D4, ESF and PCM-30 (PCM-30C) or
PCM-31 (PCM- 31C) for E1
Time Slot Selection n x 64 Contiguous or Arbitrary Blocks for Drop or Insert.
Time Slots TS1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31
Data Rates 64, 128, 192, 256, 320, 384, 512, 640,
768, 960, 1024, 1280, 1536, 1920 Kbps
Efficient D&I Closed Network, Satellite Overhead 0.4%
Time Slots 1-31 Any combination
7.6 Terrestrial Interfaces
A variety of standard interfaces are available for the DMD50 modem in stand-alone applications.
7.7 IDR/ESC Interface (Optional)
G.703 T1 (DSX1) 1.544 Mbps, 100-Ohm Balanced, AMI and B8ZS
G.703 E1 2.048 Mbps, 75-Ohm Unbalanced and 120-Ohm
Balanced, HDB3
G.703 T2 (DSX2) 6.312 Mbps, 75-Ohm Unbalanced and 110-Ohm
Balanced, B8ZS and B6ZS
G.703 E2 8.448 Mbps, 75-Ohm BNC, Unbalanced, HDB3
7.8 IBS/Synchronous Interface (Standard)
RS-422/-530 All Rates, Differential, Clock/Data, DCE
ITU V.35 All Rates, Differential, Clock/Data, DCE
RS-232 (DCE up to 200 Kbps)
7.9 High-Speed Serial Interface (HSSI)
HSSI: HSSI, Serial, 50-Pin SCSI-2 Type Connector (Female)
7.10 ASI
ASI/RS-422 Parallel: ASI, Serial, 75-Ohm BNC (Female)
DVB/M2P, Parallel, RS-422, DB-25 (Female)
ASI/LVDS Parallel: ASI, Serial, 75-Ohm BNC (Female)
DVB/M2P, Parallel, LVDS, DB-25 (Female)
7.11 DVB/M2P
DVB/M2P: DB-25 Female Connector. It complies with RS-422
Electrical Specifications.
7.12 Ethernet Data Interface (Optional)
Ethernet Data Interface Four RJ-45, Auto-Crossover, Auto-Sensing, 10/100
Ethernet Data Ports. Complies with IEEE 802.3 and
IEEE 802.3u.