install the USB drivers, and make that COM port number available for typical
RS232 communication to the pulse generator. Hyperterminal or other common
software may be used.
When communicating through the mapped COM port over USB, the baud rate
for the communication port used by the USB chip must match the baud rate for
the COM port on the pc. Access to the USB port baud rate is done using the
SCPI command :SYSTem:COMMunicate:SERial:USB n command, where n is
the desired communication speed. This parameter can be accessed via any
communication method. The default buad rate for USB is 38400.
USB communication notes:
The correct drivers must be installed on the personal computer before
communication can be accomplished via USB.
The BAUD rates on the pc and on the pulse generator must match for
successful communication.
The USB port s BAUD rate on the pulse generator can be set using the
SCPI command :SYSTem:COMMunicate:SERial:USB n where n can
be:
o
4800
o
9600
o
19200
o
38400 (default)
o
57600
o
115200
USB 1.0 specification is used. The USB cable can be removed without
unplugging the device in the operating system environment.
Echo functionality is not available on the USB port.
GPIB Interface Overview
Also known as IEEE-488, a GPIB computer interface is standard on the 9520.
Before using this interface, the address must be set using the GPIB address
menu item. The command set is the same for the RS-232, GPIB, USB and
Ethernet. Different interfaces may be used at the same time. Responses will be
made to the most recently used interface.
Ethernet Interface Overview
An Ethernet interface is optional on the 9520.
