GE MDS SD4 Series, Руководство для стартапов

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05-4669A01, Rev. A MDS SD4 Startup Guide
13
Invisible place holder
Figure 9. COM1 Wiring to Computer
COM2 CONNECTIONS
The COM2 connector ( Figure 10 ) is used to connect the radio to an
external DTE telemetry device that supports the EIA/RS-232 or
EIA/RS-485 (balanced) format, depending on how the radio is config-
ured. The radio supports data rates of 300, 1200, 2400, 4800, 9600,
19200, 38400, 57600, and 115200 bps (asynchronous data only).
The COM2 connector mates with a standard DB-9 plug that is avail-
able from many electronics parts distributors. Table 5 and Table 6 pro-
vide detailed pin descriptions for the DATA connector in RS/EIA-232
mode and RS/EIA-485 mode, respectively.
Pin Descriptions—RS/EIA-232 Mode
Table 5 lists the
COM
connector pin functions when configured to
operate in RS/EIA-232 mode.
NOTE:
The radio is hard-wired as a DCE device in EIA-232 mode.
Figure 10
.
COM2 Connector (DB-9F)
As viewed from outside the radio
Table 5. COM2 Pin Descriptions—RS/EIA-232
Pin
Number
Input/
Output Pin Description
1 OUT DCD (Data Carrier Detect)
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 -- Not Used—Do not connect
RXD
TXD
GND
2
3
5
RXD
TXD
GND
2
3
5
>
<
DB-9 FEMALE
(COMPUTER)
DB-9 MALE
(RADIO SIDE)
5
9 6
1