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4.5.4 Question Mark
Adding the question mark (?) before the option string will be return to the corresponding value and unit, if no unit,
the instrument will only return to the value.
4.5.5 Data String
The maximum length of the data string is 10 characters.
4.5.6 Control Capability
The remote commands can control all instrument functionalities.
4.5.7 Serial Port Control
In the serial port control mode, users should firstly send the instrument's address and select the corresponding
instrument, next send the remote commands. If the USB interface is used, no need to send the address message.
Select the corresponding device on the computer directly.
4.5.8 Online Operation
First, send the interface select command. For example, send “address + RS232” command to select the RS232
interface. The instrument will switch to the RS232 remote mode. If the address of the instrument is 88, send
“88RS232”. To exit this remote control mode, send “88LOCAL” or press key [SYS] to make the instrument back
to the normal key operation mode. Otherwise, neither the key operation nor the other remote controls can be used.
4.6 Application Software
In the automatic testing system, the application software is a control program which is written by the testing
engineers for the accurate control on the variety of instruments and devices. Users have to read the details of this
guide before starting to write the application program. It is quite easy to program as long as you are familiar with
the manual operations and transfer each manual operation to the program of each remote command gradually. The
application program can be written by a variety of computer languages.
4.6.1 Enter the Program Mode
After power on, the instrument is in the manual operation mode. When the remote command is received, the
instrument enters the remote operation mode. At this time, all the key functions are not available. The instrument
can only be operated by the remote command. To return to the manual operation mode, send the “Address +
LOCAL” (for example “88LOCAL”) command from the computer to tell the instrument back to the manual
operation mode. Or, press key [SYS] to return to manual operation.
4.6.2 Tips for Programming
Users have to pay attention to the program main points below when use the remote command to program.
1: Strictly follow the remote command format, including the uppercase and lowercase characters in the command
code. Otherwise, the instrument will consider the command as a wrong message and ignore the operation.
2: Users should be familiar with the manual operation firstly and make sure the remote command sequence
exactly same as the manual operation. The right sequence of the command should be the function string, the
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