Connecting the dte – RAD Data comm ASM-60 User Manual
Page 18

Chapter 2 Installation and Setup
ASM-60 Installation and Operation Manual
2-4
Installation and Setup
Connecting the DTE
The ASM-60 DTE interface provides interface for input/output data, clock
reference and control signals between the modem and the DTE. The ASM-60 DTE
interface can be either HSSI interface module, terminating in SCSI 50 female
connector (see Table 2-2), or one of the Ethernet interface modules, described in
greater detail in Appendix A, Appendix B and Appendix C.
➤ To connect the HSSI interface:
• Attach the HSSI cable, terminated by SCSI 50 male connector to the SCSI 50
socket on the rear panel of ASM-60.
Table 2-2. HSSI Interface Connector Pinout
Signal Name
Function
ASM-60 Signal
Direction
Pin (+Side)
Pin (-Side)
SG Signal
Ground
1 26
RT Receive
Timing
IR-DXC
From
ASM-60
2 27
CA
DCE Available
DSR
From ASM-60 3
28
RD
Receive Data
IR-RXD
From ASM-60 4
29
LC
Loopback Circuit C
–
From ASM-60 5
30
ST Send
Timing
IR-TXC
From
ASM-60
6 31
SG Signal
Ground
–
– 7 32
TA DTE
Available
DTR – 8 33
TT
Terminal Timing
IR-EXTC
To ASM-60
9
34
LA Loopback
Circuit
A
–
– 10 35
SD
Send Data
IR-TXD
To ASM-60
11
36
LB Loopback
Circuit
B
–
– 12 37
SG Signal
Ground
–
– 13 38
5
Ancillary to DCE
–
–
14–18
39–43
SG Signal
Ground
–
– 19 44
4
Ancillary from DCE
–
–
20–23
45–48
TM Test
Mode –
– 24 49
SG Signal
Ground
–
– 25 50