Prodigit 3260A Series - Chapter 4 Gpib;Rs-232 C Operation; Introduction; The Summary of RS-232 Interface and Command; Fig 4-1 Rs-232 Interface Diagram

PRODIGIT 3260A Series Operation Manual 37
Chapter 4 GPIB/RS-232C Operation
4-1 Introduction
The rear panel GPIB/RS-232C interface of 3260A Series is designed to connect PC
( Personal Computer ) or NOTEBOOK PC with GPIB/RS-232C interface, the NOTEBOOK
PC acts as a remote controller of 3260A series Electronic Load.
This feature can be used as an automatic load/cross load regulation and centering voltage
testing for a switching power supply or an rechargeable battery charge/discharge
characteristic testing. The function capability of rear panel GPIB/RS-232C interface not only
can set the load level and load status, but also can read back the load voltage and load
current.
4-2 The summary of RS-232 interface and command
The following RS-232 commands are same as GPIB commands. The RS-232 protocol in
3302C mainframe is listing below:
Baud-rate ：9600
Parity ：none
Data bit ：8 bits
Stop bit ：1 bit
command delay time ：20 mSec.
The connection of rear panel RS-232 interface is shown below, The Figure 4-1.a is
connector wire diagram of rear panel RS-232 interface, User can use the general RS-232
cable as Figure 4-1.b.
TxD
RxD
RTS
CTS
TxD
RxD
RTS
CTS
Figure 4-1.a
TxD
RxD
RTS
CTS
DSR
GND
DCD
DTR
2
3
4
5
6
7
8
Figure 4-1.b
Inside of 3300C Mainframe
RS232C port on
3300C Mainframe
RS232C port on PC
9
Fig 4-1 Rs-232 INTERFACE DIAGRAM