M7/M7L/M7LT Modular Satellite Modem
Maintenance
M7/M7L/M7LT - Rev. 0.05
2-19
Table 2-19
– M7 Overhead Channel - Advanced/IBS Custom Mux - RS-232 (J25)
J10
Pin #
Signal Name
Use
Direction
1
Ground
All
Ground
2
ESC Send Data
RS-232 Advanced/Custom
Mode Connection (sync)
Input
3
ESC Rcv Data
RS-232 Advanced/Custom
Mode Connection (sync)
Output
4
ESC RTS
RS-232 Advanced/Custom
Mode Connection (sync)
Input
5
ESC CTS
RS-232 Advanced/Custom
Mode Connection (sync)
Output
6
ESC DSR
RS-232 Advanced/Custom
Mode Connection (sync)
Output
7
Ground
Ground
Ground
8
ESC DCD
RS-232 Advanced/Custom
Mode Connection (sync)
Output
9
Primary Interface
External Clock+ (B)
FIFO External Clock input ‘+’
or ‘B’ line. RS422 level
Input
11
ESC Alarm Out A
Relay Common
Backward Alarm A, Form C
Common
Output
12
ESC Alarm Out B
Relay N.O.
Backward Alarm B, Form C
Normally Open
Output
13
ESC Alarm Out B
Relay N.C.
Backward Alarm B, Form C
Normally Closed
Output
14
ESC Alarm In A
Alarm A Relay, Low Activates
Remote ESC
Input, TTL, Internal 1mA Pull-
Up
15
Ground (Return for
ESC Alarm In A)
Alarm A Relay, Ground
Ground
16
ESC Alarm In B
Alarm B Relay, Low Activates
Remote ESC
Input, TTL, Internal 1mA Pull-
Up
17
Ground (Return for
ESC Alarm In B)
Alarm B Relay, Ground
Ground
18
RS-232 Input
Not Currently Used
Input
20
ESC DTR
RS-232 Advanced/Custom
Mode Connection (sync)
Input
21
Primary Interface
External Clock- (A)
FIFO
External Clock input ‘-‘ or
‘A’ line. RS422 level
Input
23
ESC Alarm Out A
Relay N.O.
Backward Alarm A, Form C
Normally Open
Output
24
ESC Alarm Out A
Relay N.C.
Backward Alarm A, Form C
Normally Closed
Output
25
ESC Alarm Out B
Relay Common
Backward Alarm, Form C
Normally Common
Output
Содержание M7 Series
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