Radyne DMD2050, Operation Manual

Page: 141 / 214

Rear Panel Interfaces DMD2050 Universal Satellite Modem
5-22 TM110 - Rev. 1.3
23 Backward Alarm In – 3 ESCBWI 3 Input
24 No Connection NC ---
25 No Connection NC ---
5.8.5 SD (DDI) (J6)
The Send Data (Drop Data In) Port (Unbalanced) is a 75-Ohm Female BNC Connector.
5.8.6 DDO (J7)
The Drop Data Out Port (Unbalanced) is a 75-Ohm Female BNC Connector.
5.8.7 IDI (J8)
The Insert Data In Port (Unbalanced) is a 75-Ohm Female BNC Connector.
5.8.8 SD (IDO) (J9)
The Send Data (Insert Data Out) Port (Unbalanced) is a 75-Ohm Female BNC Connector.
5.9 HSSI / Ethernet
5.9.1 HSSI
(J1)
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. The pinouts for this interface are listed in Table 5-19.
Table 5-19. J1 – HSSI (High-Speed Serial Interface) 50-Pin 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 ---