MDS 05-4846A01, Rev. F
SD Series Technical Manual
23
COM1 (Serial) Connection
The default factor settings for the radio’s
COM1
port (Figure 17) assigns
it for management or diagnostics of the radio via a serial connection to
a PC.
COM1
may be used to set basic parameters such as output power,
modem type and operating frequency of the radio.
This method provides an alternative to the web-based SD
Device Man-
ager
, accessible via the Ethernet RJ-45 port (see Page 21) when Ethernet
connectivity is not available. If you wish to use serial or Telnet control
instead, refer to the
SD Serial/Telnet Management Supplement
, Part No.
05-6193A01.
For typical applications, a straight-through DB-9 cable may be used for
PC management. If desired, a cable may be constructed as shown in
Figure 18, using Pins 2 (RXD), 3 (TXD), and 5 (Ground). Table 7 lists
all
COM1
pins.
Figure 18. COM1 Wiring for PC Management
Figure 17
.
COM1 Connector (DB-9F)
As viewed from outside the unit
5
9
6
1
RXD
TXD
GND
2
3
5
RXD
TXD
GND
2
3
5
>
<
DB-9 FEMALE
(COMPUTER)
DB-9 MALE
(RADIO SIDE)
Table 7. COM1 Pin Descriptions
Pin
Number
Radio
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.
