User Manual

Table Of Contents
14 SD Series Reference Manual (x710 Mode) MDS 05-4670A01, Rev. E
Invisible place holder
Figure 13. COM1 Wiring to Computer for Management
COM1 in Analog Operation
The
COM1
port also supports connections for analog operation with an
external modem. Pins 4, 5, 6, and 8 in Table 5 are used for analog oper-
ation. (Pins 7 and 9 are reserved for user I/O signals.) Refer to “Analog
Operation of the Transceiver” on Page 46 for more information.
RXD
TXD
GND
2
3
5
RXD
TXD
GND
2
3
5
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DB-9 FEMALE
(COMPUTER)
DB-9 MALE
(RADIO SIDE)
>
Table 5. COM1 Pin Descriptions
Pin
Number
Input/
Output Pin Description
1 -- No function
2 OUT RXD (Received Data)—Supplies received data to the
connected device.
3 IN TXD (Transmitted Data)—Accepts TX data from the
connected device.
4 -- No function
5 -- Ground—Connects to ground (negative supply potential) on
chassis.
6 -- No function
7 -- No function in most applications—User I/O for special
applications
8 --- No function
9 -- No function in most applications—User I/O for special
applications