ST2883 Series Operation Manual Chapter 6 Introduction to [SYSTEM]
6-4
6.2 Interface
In this page, information about RS232 interface, USB interface (USBTMC or USBCDC), LAN interface and
interface setups can be set, as shown in figure 6-2.
Figure 6-2 Interface 1
6.2.1 I/O
Move the cursor to the I/O: zone, following soft keys will be displayed.
RS232C Set RS232 interface as the I/O interface.
USB Set USB interface as the I/O interface.
LAN
Set LAN interface as the I/O interface.
Lighten this key to enable the numerical arrow key. Respectively press 8, 2, 4, 6, the cursor will move
up, down, left and right.
Note:
Once an interface is selected, the cursor can only move in the corresponding zone. For example,
when RS232C interface is selected, the cursor can move only in the RS232C setup zone.
6.2.2 ST2883 RS232C interface
RS-232 standard, also called as asynchronous serial communication standard, has already been widely used for
data communication between computers, computer and external equipment. RS is the English abbreviation of
Recommended Standard; 232, the standard number. This standard is issued by IEA in 1969, which rules to send
one bit in a data line every time.
As most serial interfaces, the serial interface of ST2883 is also not strictly based on RS-232 standard but only
uses the smallest subset of this standard. The signals are listed in the following table.
Signal Code
Connector
pin
number
Transmitted data
TXD
2
Received data
RXD
3
Signal ground common
GND
5
Table 6-1 RS-232 signal and pin number
