PT5040 Operation Manual Chapter 6 Introduction to [SYSTEM]
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
The reason is that the use of three lines is much more inexpensive and much simpler than that of
five lines or six lines, which is the biggest advantage of using serial interface for communication.
The connection of the instrument with PC is shown in figure 6-3:
TXD(2) (3) RXD
PC
（
Controller
）
RXD(3) (2) TXD PT50xx
GND(5) (5) GND
Figure 6-3 Connection of the instrument with PC
Figure 6-3 shows that the serial interface pin definition of this instrument is different from that of
9 pin connector used in IMB AT compatible computer. User can purchase the serial interface
cable from our company.
PT50xx‟s baud rate, data bit, stop bit, parity bit and Tx term can be set
.
See the following 5
sections for details.
Commands of PT50xx comply with SCPI standard. When a command string is sent to the
instrument, Tx term must be attached to the end of the string. The length of a SCPI command
string that PT50xx can receive every time is up to 2k Byte.
See command reference for data format that the instrument sends to PC.
Baud Rate
PT50xx provides five baud rates: 4800bit
、
9600bit
、
19200bit
、
38400bit
、
115200bit. Move the
cursor to this zone, following soft keys can be used.
They are soft keys used to choose the required baud rate.
Data Bit
Move the cursor to this zone, following soft keys can be used.
6
Set the data bit to 6 Bit.
7
Set the data bit to 7 Bit.
8
Set the data bit to 8 Bit.
Stop Bit
Move the cursor to this zone, following soft keys can be used.
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