Hssi (J6) - Radyne DMD20 Installation And Operation Manual

Rear Panel Interfaces

5.7.1 HSSI (J6)

The HSSI (High-Speed Serial Interface) (J6) complies with the HSSI Functional and Electrical
Specifications. The physical interface is a 50-Pin SCSI-2 Type Connector. Electrical levels are
ECL. The pinouts for this interface are listed in Table 5-11.
Table 5-11. J9 – HSSI (High-Speed Serial Interface) 50-Pin Connector
Pin No. (+) Pin No. (–)
1
2
3
4
5
6
7
8
9
10
11
12
13
14 - 18 39 – 43
19
20 - 23 45 - 48
24
25
50
5-18
Signal Name
26 SG
27 RT
28 CA
29 RD
30 LC
31 ST
32 SG
33 TA
34 TT
35 LA
36 SD
37 LB
38 SG
5 Ancillary to
DCE
44 SG
4 Ancillary
from DCE
49 TM
N/A MOD_FLT
N/A DMD_FLT
DMD20/DMD20 LBST Universal Satellite Modem
Description
Signal Ground
Receive Timing
DCE Available
Receive Data
Loopback Circuit C
Send Timing (SCT)
Signal Ground
DTE Available
Terminal Timing (SCTE)
Loopback Circuit A
Send Data
Loopback Circuit B
Signal Ground
Reserved
Signal Ground
Reserved
Test Mode
Alarm
Alarm
Direction
---
Output
Output
Output
Output
Output
---
Input
Input
Input
Input
Input
---
Input
---
Output
Output
Output
Output
TM103 - Rev. 2.5