Datum Systems M7 Series - Table 2-6 - Synchronous Serial Data Interface Connector Pinout (J11)

M7/M7L/M7LT Modular Satellite Modem Maintenance
M7/M7L/M7LT - Rev. 0.05 2-9
2.3.8. Data Interface Options
The modem is supplied with an electronically programmable data interface assembly
2.3.8.1. Synchronous Serial Data Interface
2.3.8.1.1. Synchronous Serial Data Interface Connection (J11):
The connection to the primary data signals on the Synchronous Serial Data Interface is on a 25-pin
female “D” sub connector. The physical connector and pinout is per the RS-530 interface standard.
The electrical interface however can be changed under front panel or remote program control to
include the types of interfaces shown above.
NOTE: Connecting the Data Interface to other types of equipment involves building cables between
the M7 and that other equipment’s physical interface. Additional information aiding the
creation of adaptor cables from the modem’s 25-pin female “D” sub connector to other types
of interface connections such as V.35 “Winchester” type connector standard pin-outs is
presented in Appendix C - Cabling Specifications”
Table 2-6 shows the pin assignments for the selectable standard electrical interfaces.
Table 2-6 – Synchronous Serial Data Interface Connector Pinout (J11)
J11
Pin #
EIA-449 Signal
Name
V.35 Signal Name
EIA-232 Signal
Name *(3)
EIA-530 Signal
Name
Direction
1
Shield (GND)
Shield (GND)
Shield (GND)
SHD (GND)
GND
2
Transmit Data (A) –
SD A (SD-)
SD
TD A
Input
14
Transmit Data (B) +
SD B (SD+)
TD B
Input
15
Transmit Clock (A) –
SCT A (ST-)
ST
TTSETC A
Output
12
Transmit Clock (B) +
SCT B (ST+)
TSETC B
Output
3
Receive Data (A) –
RD A (RD-)
RD
RD A
Output
16
Receive Data (B) +
RD B (RD+)
RD B
Output
17
Receive Clock (A) –
SCR A (RT-)
RT
RSETC A
Output
9
Receive Clock (B) +
SCR B (RT+)
RSETC B
Output
4
RTS (A) –
RTS
RTS
RTS A
Input
19
RTS (B) +
RTS B
Input
5
CTS (A) –
CTS
CTS
CTS A
Output
13
CTS (B) +
CTS B
Output
6
Data Mode (A) –
DSR
DCR
DCR A
Output
22
Data Mode (B) +
DCR B
Output
20
TR (A) –
DTR
DTR
DTR A
Input
23
TR (B) +
DTR B
Input
8
Receive Ready (A) –
RLSD
RLSD
RLSD A
Output
10
Receive Ready (B) +
RLSD B
Output
24
Terminal Timing (A)
–
SCTE A (TT-)
TSETT
TSETT A
Input
11
Terminal Timing (B)
+
SCTE B (TT+)
TSETT B
Input
18
Mod Fault Alarm
OC TTL output
25
Output
21
Demod Fault Alarm
OC TTL output
23
Output
7
Signal GND
SIG GND
GND
SGND
GND
25
Aux RS-232
Transmit/Receive
Aux RS-232
Transmit/Receive
Aux RS-232
Transmit/Receive
Aux RS-232
Transmit/Receive
Input /
Output