Product specifications

CDM-710 Broadcast Satellite Modem Revision 10
CDI-60 HSSI Interface MN/CDM710.IOM
12–4
Continuous Clock
Gap Clock
Figure 12-3. Continuous and Gap Clock at TT
12.4 Connector Pinout
The HSSI interface has a 50 pin female SCSI-2 connector (mini-D) with the pinout shown in
Table 12-2.
Table 12-2. Connector Pinout
HSSI/EIA-613 Interface Connector Pinout
Signal Function
HSSI
Signal
EIA-613
Circuit
Pin # (+,-)
Circuit
Direction
Comment
Signal Ground SG 102 1, 26 Ground
Receive Timing RT 115 2, 27 From DCE
DCE Available CA 107 3, 28 From DCE
Receive Data RD 104 4, 29 From DCE
Loopback circuit C LC undefined 5, 30 From DCE Not used
Send Timing ST 114 6, 31 From DCE
Signal Ground SG 102 7, 32 Ground
DTE Available TA 108/2 8, 33 to DCE
Terminal Timing TT 113 9, 34 to DCE
Loopback circuit A LA 143 10, 35 to DCE Not used
Send Data SD 103 11, 36 to DCE
Loopback Circuit B LB 144 12, 37 to DCE Not used
Signal Ground SG 102 13, 38 Ground
Not used undefined 14, 39 Not used
TX DVALID undefined 15, 40 Not used
reserved (to DCE) 16, 41 Not used
reserved (to DCE) 17, 42 Not used
reserved (to DCE) 18, 43 Not used
Signal Ground SG 102 19, 44 Ground
undefined 20 Not used
undefined 45 Not used
undefined 21 Not used
reserved (to DTE) 46 Not used
undefined 22, 47 from DCE Not used
undefined 23, 48 from DCE Not used
Test Mode TM 142 24, 49 from DCE Not used
Signal Ground SG 102 25, 50 Ground