Sms-451e, Tx if, Sdm-9000 – Comtech EF Data SMS-451 User Manual
Page 20: Rx if, Rx ter, Tx ter

SMS-451 Sateliite Switch
Revision 0
Introduction
MN/SMS451.IOM
1–6
The system block diagram (Figure 1-5) shows how the switch provides the interface
between the prime modem and the terminal and IF converter equipment.
SMS-451E
TX IF
TX IF
SDM-9000
RX IF
RX IF
TX TER
ESC
ECL INTERFACE
RX TER
FAULT
RX TER
RX DATA
RX CLOCK
RX SYNC
ECL INTERFACE
TX IF
SDM-9000
RX IF
TX DATA
TX CLOCK
TX SYNC
TX TER
2 AUDIO
4 BW ALARM
ESC
TX TER
ESC
RX TER
FAULT
Figure 1-5. SMS-451E Block Diagram with SDM-9000 Satellite Modem
Connection of the SMS-451E with the SDM-2020 Modulator and/or Demodulator with a
HSSI Interface along with a Cisco router and test translator is shown in Figure 1-6. The
Y-cables between the modem and switch are provided. The cable between the switch and
the router is ordered separately.
- CDD-880 (124 pages)
- CDM-800 (130 pages)
- ODMR-840 (184 pages)
- CDM-750 (302 pages)
- CDM-840 (244 pages)
- SLM-5650A (420 pages)
- CTOG-250 (236 pages)
- CDM-700 (256 pages)
- CDM-760 (416 pages)
- CDM-710G (246 pages)
- CDM-600/600L (278 pages)
- CDMR-570L (512 pages)
- CDM-625 (684 pages)
- CDM-625A (756 pages)
- CDD-564A (240 pages)
- CDD-564L (254 pages)
- CLO-10 (134 pages)
- MCED-100 (96 pages)
- CDMR-570AL (618 pages)
- CDM-600 LDPC (2 pages)
- BUC Power Supply Ground Cable (2 pages)
- MPP70 Hardware Kit for CDM-570L (4 pages)
- MPP50 Hardware Kit for CDM-570L (4 pages)
- CDM-625 DC-AC Conversion (4 pages)
- CDM-625 DC-AC Conversion with IP Packet Processor (4 pages)
- DMDVR20 LBST Rev 1.1 (117 pages)
- DMD2050E (212 pages)
- DMD-2050 (342 pages)
- DMD1050 (188 pages)
- OM20 (220 pages)
- QAM256 (87 pages)
- DD240XR Rev Е (121 pages)
- MM200 ASI Field (5 pages)
- DM240-DVB (196 pages)
- MM200 (192 pages)
- CRS-150 (78 pages)
- CRS-280L (64 pages)
- CRS-170A (172 pages)
- CRS-180 (136 pages)
- SMS-301 (124 pages)
- CiM-25/8000 (186 pages)
- CiM-25 (26 pages)
- CRS-500 (218 pages)
- CRS-311 (196 pages)
- CIC-20 LVDS to HSSI (26 pages)