Ethernet Data Interface (Optional) - Radyne DMD20 Installation And Operation Manual

DMD20/20LBST Universal Satellite Modem

5.12 Ethernet Data Interface (Optional)

The optional modem Ethernet Data Interface provides four RJ-45 10/100 Base-T interface. The
Ethernet interface supports Auto-Crossover and Auto-Sensing. The Ethernet port are referred to
as JS1 through JS4.
JS1 is Port 1
JS2 is Port 2
JS3 is Port 3
JS4 is Port 4
Refer to Figure 5-1 for outline drawings and Appendix J for setup & configuration.
The DMD20 & 20LBST supports Radyne HDLC and Comtech HDLC modes,
offering compatibility with the SLM5650A Bridge Interface.
IMPORTANT
5.13 HSSI / G.703
The HSSI (High-Speed Serial Interface) (J1) complies with the HSSI Functional and Electrical
Specifications. The physical interface is a 50-Pin SCSI-2 Type Connector. Electrical levels are
ECL. Gapped clocking not supported. The pinouts for this interface are listed in Table 5-14.
Table 5-14. J1 – HSSI (High-Speed Serial Interface) 50-Pin Connector
Pin No. (+)
1
2
3
4
6
7
8
9
11
13
14 - 18
19
20 - 23
24
25
50
MN-DMD20-20LBST Revision 14
Pin No. (–) Signal Name
26 SG
27 RT
28 CA
29 RD
31 ST
32 SG
33 TA
34 TT
36 SD
38 SG
5 Ancillary to
39 – 43
DCE
44 SG
4 Ancillary
45 - 48
from DCE
49 TM
N/A MOD_FLT
N/A DMD_FLT
Description
Signal Ground
Receive Timing
DCE Available
Receive Data
Send Timing (SCT)
Signal Ground
DTE Available
Terminal Timing (SCTE)
Send Data
Signal Ground
Reserved
Signal Ground
Reserved
Test Mode
Alarm
Alarm
Rear Panel Interfaces
Direction
---
Output
Output
Output
Output
---
Input
Input
Input
---
Input
---
Output
Output
Output
Output
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