Comtech EF Data CRS-400 - Manual (Page 32)

CRS-400 1:8 Redundancy Switch Revision 0
Installation and Setup MN/CRS400.IOM
16
2.6.2 TMI D ATA C ONNECTOR (HSSI)
Table 2-1 describes the pinout for the HSSI connector. User equipment connects to the
CRS-400 at J5. Make the connections from the CRS-400 to the mod/demod using J6 and
J7 for the modulator and demodulator, respectively. Two connectors, J6 and J7, are
provided to eliminate the need for a Y-cable between the mod/demod and the switch
when the modulator and demodulator are housed in separate chassis. Use only J6 when
connecting a combined modulator and demodulator (modem) to the switch.
Table 2-1 HSSI Pinout (J5 / J6 / J7) 50-Pin Mini-D/SCSI-2 Male and Female
HSSI/EIA-613 Interface Connector Pinout -- J6 / J7 To modem J5 To User
Signal Function HSSI
Signal
EIA-613
Circuit
Pin # (+, -) Circuit
Direction
Comment Pin # (+, -)
Signal Ground SG 102 1, 26 Mod/Demod 1, 26
Receive Timing RT 115 2, 27 from DCE Demodulator 2, 27
DCE Available CA 107 3, 28 from DCE Mod/Demod 3, 28
Receive Data RD 104 4, 29 from DCE Demodulator 4, 29
Loopback Circuit C LC undefined 5, 30 from DCE Mod/Demod unused
Send Timing ST 114 6, 31 from DCE Modulator 6, 31
Signal Ground SG 102 7, 32 Mod/Demod 7, 32
DTE Available TA 108/2 8, 33 to DCE Mod/Demod 8, 33
Terminal Timing TT 113 9, 34 to DCE Modulator 9, 34
Loopback Circuit A LA 143 10, 35 to DCE Mod/Demod unused
Send Data SD 103 11, 36 to DCE Modulator 11, 36
Loopback Circuit B LB 144 12, 37 to DCE Mod/Demod unused
Signal Ground SG 102 13, 38 Mod/Demod 13, 38
TX PSYNC (Note 1) TPSYNC undefined 14, 39 to DCE Modulator unused
TX DVALID (Note 1) TDVALID undefined 15, 40 to DCE Modulator unused
Reserved (to DCE) 16, 41 unused unused
Reserved (to DCE) 17, 42 unused unused
Reserved (to DCE) 18, 43 unused unused
Signal Ground SG 102 19, 44 Mod/Demod 19, 44
Carrier Detect (lock)
(Notes 1 and 2)
CD undefined 20 from DCE Demodulator 20