iET PRS-300 Series, Руководство по эксплуатации, Страница: 23 / 50

PRS-300 Series
USB INTERFACE
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Chapter 4
USB INTERFACE
4.1 Introduction
The standard USB connection is via a
standard USB B female connector located on
the rear panel. This can be connected to a
PC via a standard USB 2.0 A Male to B Male
Cable.
Figure 4-1 USB 2.0 A Male to B Male
Cable
The SCPI standard provides a tree like
series of standard commands for program-
mable instruments so that similar instruments
by different manufacturers can be controlled by
the same program.
4.2 Capabilities
The USB interface provides remote con-
trol over all functions except POWER .
4.3 USB Operation
The USB uses the command set outlined
in Appendix B. Data should be terminated
with LF line feed.
Normally when the PRS-300 is connected
to a computer using the USB port, Windows
7 and higher will search for the correct driver
and as long as the computer is connected to
the internet the driver should automatically be
installed.
4.3.1 Standard USB Interface
The standard USB interface uses a stan-
dard FTDI chip set. Drivers can be found from
ftdi or the link below.
http://www.ietlabs.com/prs-300-program-
mable-decade-resistor.html
Data Rates and Formats
Baud Rate: 9600 baud
Date bits 8
Parity none
Stop bits 1
4.3.2 Optional IEEE Interface with
High Speed USB Interface
The USB interface that comes with the
optional ieee interface uses an MCP2200 chip
set. This is a higher speed USB interface than
the standard USB interface.
Drivers can be found at the link below.
http://www.ietlabs.com/prs-300-ieee-
ethernet.html
Data Rates and Formats
Baud Rate: 9600 baud
Date bits 8
Parity none
Stop bits 1