3 rear panel connectors, 1 hssi / ethernet connectors – Comtech EF Data DMD-2050E User Manual
Page 156
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