Product specifications

DMD2050E Universal Satellite Modem External Connections
MN-DMD2050E Revision 2 5–4
5.3 Rear Panel Connectors
CAUTION
Before you connect any cable to the unit, examine the connector labels. Make sure to
use the correct mating connector when you connect a cable to the unit.
5.3.1 HSSI / Ethernet Connectors
Label
Description
Connector Type
Notes
HSSI J1 High-Speed Serial
Interface Port
50-pin SCSI-2
1. Complies with the HSSI Functional
and Electrical Specifications
2. Electrical levels are ECL
3. Gapped clocking is not allowed
ETHERNET 10/100/1000
DATA INTERFACE JS2
Ethernet Data
Interface Port
RJ45 10/100/1000
Base-T
1. Allows Auto-Crossover and Auto-
Sensing
Table 5-3. Pinouts for J1 HSSI 50-Pin SCSI-2 Connector
Pin No. (+)
Pin No. (–)
Signal Name
Description
Direction
1 26 SG Signal Ground ---
2 27 RT Receive Timing Output
3 28 CA DCE Available Output
4 29 RD Receive Data Output
6 31 ST Send Timing (SCT) Output
7 32 SG Signal Ground ---
8 33 TA DTE Available Input
9 34 TT Terminal Timing (SCTE) Input
11 36 SD Send Data Input
13 38 SG Signal Ground ---
14 - 18 39 – 43 5 Ancillary to DCE Reserved Input
19 44 SG Signal Ground ---
20 - 23 45 - 48 4 Ancillary from DCE Reserved Output
24 49 TM Test Mode Output
25 N/A MOD_FLT Alarm Output
50 N/A DMD_FLT Alarm Output