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ST950 Plus+ User Manual
ST950 Plus+ User Manual
Page 42 of 176
667/HE/53000/000
Issue 2
Unrestricted
Location Pin
Function
8
External supply monitor signal return (0V)
9
External supply monitor signal (analog)
10
External supply monitor signal return (0V)
Bottom
11
RS232 DCD (Input)
12
RS232 DSR (Input)
13
RS232 RxD (Input)
14
RS232 RTS (Output)
15
RS232 TxD (Output)
16
RS232 CTS (Input)
17
RS232 DTR (Output)
18
RS232 RI (Input)
19
0V
20
Not Used
Table 6 : Double Stacked 10W IDC- Top: Modem Power + Monitors, Bottom: EFC Modem
Functions:
Modem 5V Supply (1,2 & 3,4)
–
This output provides a regulated 5V supply with active current
limiting set at approximately 700mA. This supply output is NOT battery backed.
Isolated Shutdown Output (5,6)
–
These two pins provide an opto-isolated controller shutdown
signal. The + signal is the collector and the
–
signal is the emitter of the opto-transistor. The output
is active low (i.e. low impedance) when the controller is in the shutdown state. The maximum
current that this output can pass is 25mA and suitable external devices must be employed to
ensure that this figure is not exceeded otherwise damage to the ST950 board will occur.
Digital External Supply Monitor (7,8)
–
For future use.
Analog External Supply Monitor (9,10)
–
For future use.
Bottom connector
–
Serial port for future use.
The double stacked connectors are numbered as shown in Figure 2 below: