IET Labs VI-700, Руководство по эксплуатации

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VI-700 V&l Source
9
Chapter 4
IEEE INTERFACE OPTION
4.1 Introduction
The IEEE interface option makes the VI-700 an IEEE-
488.2-1987 and SCPI 1994.0 compatible instrument.
The IEEE STD 488.2 covers the electrical and me-
chanical bus specifications, and state diagrams for
each GPIB bus function. It also establishes data for-
mats, common commands for each 488.2 device and
controller protocols. The standard is available on-line
at http://www.ieee.org or by contacting the IEEE at:
IEEE Corporate Office
3 Park Avenue, 17th Floor
New York, New York
10016-5997 U.S.A.
Tel: +1 212 419 7900
The SCPI standard provides a tree like series of stan-
dard commands for programmable instruments so that
similar instruments by different manufacturers can
be controlled by the same program. SCPI informa-
tion and a command reference are located in Appen-
dix A.
Other tutorials are available on-line; consult IET for
additional information. A software GPIB “keyboard”
may be requested from IET to perform elementary
commands for training and testing. See Section 5.5.
4.2 Capabilities
The IEEE option provides remote control over the
output value; it does not control the range.
Decimal
Address
SWITCH
SETTINGS
5-4-3-2-1
Decimal
Address
SWITCH
SETTINGS
5-4-3-2-1
0 0-0-0-0-0 16 1-0-0-0-0
1 0-0-0-0-1 17 1-0-0-0-1
2 0-0-0-1-0 18 1-0-0-1-0
3 0-0-0-1-1 19 1-0-0-1-1
4 0-0-1-0-0 20 1-0-1-0-0
5 0-0-1-0-1 21 1-0-1-0-1
6 0-0-1-1-0 22 1-0-1-1-0
7 0-0-1-1-1 23 1-0-1-1-1
8 0-1-0-0-0 24 1-1-0-0-0
9 0-1-0-0-1 25 1-1-0-1-0
10 0-1-0-1-0 26 1-1-0-1-0
11 0-1-0-1-1 27 1-1-0-1-1
12 0-1-1-0-0 28 1-1-1-0-0
13 0-1-1-0-1 29 1-1-1-0-1
14 0-1-1-1-0 30 1-1-1-1-0
15 0-1-1-1-1 31
Reserved,
do not use
4.3 Address Switch and
Communications Settings
Each GPIB bus device is identified by a five-bit bi-
nary address. There are 32 possible primary addresses
0 through 31; addresses 0 and 31 are reserved . The
VI-700
BUS ADDRESS
switch on the rear panel
establishes the GPIB address of the unit. Bus ad-
dress settings are read at power up. Refer to table
4.1.
4.4 IEEE Option Operation
The IEEE controller asserts the remote mode upon
receipt of a valid command. The REMOTE LED
will light and impedance settings will be controlled
Table 4.1 IEEE Bus Address Settings
IEEE INTERFACE