User Manual

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Parameter

Description

Baud rate

9600, 19200, 28800, 38400, 48000, 57600, and 115200.

Parity and

data bit

None/8 bits

Stop bit

Flow control

None

The RS232C interface does not support hardware flow control (only transmit, receive,

and ground pins are used). The programmer should be aware of this communication

error. Therefore, limitation and notice the command process time of the instrument.

If the remote commands are sent too fast to the instrument, the internal buffer may

overrun and cause a adding a delay between commands may be necessary to allow

time for the meter to process.

7.2 USBTMC

USB The standard USB port is a USBTMC-compliant port that can be used for remote

communication. There are no additional settings in the menu system for USB configuration. The

only requirement is that the USBTMC driver be installed. It is included when a VISA software is

installed on the computer. (We recommend using NI-VISA, which can be downloaded at

http://www.ni.com/visa/).

7.3 USB (USBCDC - Virtual COM)

The standard USB port is a virtual COM port that can be used for remote communication. There

are no settings in the menu system for USB configuration. The settings are the same as the

settings for RS232C.

The USB interface does not support hardware flow control (only transmit, receive,

and ground pins are used). The programmer should be aware of this limitation and

notice the command process time of the instrument. If the remote commands are

sent too fast to the instrument, the internal buffer may overrun and cause a

communication error. Therefore, adding a delay between commands may be

necessary to allow time for the meter to process.