Extech Instruments 382280 User Manual page 8

Example of an RS-232C Program
V 20.5 <cr>:
A 1.25 <cr>:
V 30 A 2 SEC 20 <cr>:
OVP 35 <cr>:
SEC 60 <cr>:
OCP 0 <cr>:
OCP 1 <cr>:
STORE 120 <cr>:
RECALL 100 <cr>:
RECALL 110 <cr>:
Step <cr>:
? <cr> (Inquire all data)
V 40.000 40.000 CV
A 01.000 00.999 CV
OCP 10.00 ENABLE
OVP 40.000
5V OK 3.3V OK
OPER CV
V? <cr> (obtain the voltage value)
V 40.000 40.000 CV
A? <cr> (obtain the value of current)
A 01.000 00.999 CV
Note: The first set of data following the character V or A is the programmed value, while the
second set of data is the read back A/D value. The third set of data is the status (CV, CC) of
the unit. If the third set of data shows 0V, the unit is placed in the STBY mode. The unit
sends out a <new line> and <carriage return> after each line of data.
TM
Using Windows Terminal or HyperTerminal program for PC Communication
The Terminal or the HyperTerminal program is included in all Windows
Typically it is located using the following path:
START Menu > Programs > Accessories > Communications > Terminal or HyperTerminal
When in the Terminal or HyperTerminal program, go to PROPERTIES and configure as
follows:
1. In the CONNECT TO field, select COM1 or COM2 (depending on which port is being
used).
2. In the CONFIGURATION section, select the following data format: Baud rate 9600, no
parity, 8 data bits, 1 stop bit, and no flow control.
3. In the ASCII SETUP section, click on "echo typed characters" and "Send line ends with
line feeds".
After Terminal or HyperTerminal is setup, type in the commands as described in the
previous examples.
program 20.5V
program 1.25A
program 30V, 2A, for 20 seconds
set 35V for the over voltage protection
enter 60 seconds
disable OCP (Open circuit protection)
enable OCP
store current V/A values in memory location 120.
recall V and A values stored in memory location 100.
recall V and A values stored in memory location 110.
enable ATS function. Starting step is 100 (recalled first in the
previous statement) and the ending step is 110 (recalled after
step 100).
8
TM
operating systems.
Version 1.5 9/02