Instruments Not Found; Instruments Enumeration Failed; Communicate With Your Instrument; Basic Communication (Query/Write/Read) - National Instruments NI-488.2 User Manual

Chapter 2 Measurement & Automation Explorer

Instruments Not Found

Instruments Enumeration Failed

Communicate with Your Instrument

Basic Communication (Query/Write/Read)

NI-488.2 User Manual for Windows
If the
Instruments not Found
pane, Measurement & Automation Explorer did not find any instruments.
To solve this problem, make sure that your GPIB instruments are powered
on and properly connected to the GPIB interface with a GPIB cable. Then,
scan for instruments again, as described in the previous section,
GPIB Instruments.
If the
Instruments Enumeration Failed
window pane, Measurement & Automation Explorer found too many
Listeners on the GPIB. To solve this problem, refer to the following
possible solutions:
• If you have a running GPIB Analyzer with the GPIB handshake option
enabled, disable the GPIB handshake option in the GPIB Analyzer.
• If you have a GPIB extender in your system, Measurement &
Automation Explorer cannot detect any instruments connected to
your GPIB interface. Instead, you can verify communication with
your instruments using the Interactive Control utility. To do so,
select Tools»NI-488.2 Utilities»Interactive Control. For more
information about verifying instrument communication, type
"Interactive Control:getting started"
Control command prompt.
To establish basic or advanced communication with your instruments, refer
to the following sections.
For more information about instrument communication and a list of the
commands that your instrument understands, refer to the documentation
that came with your GPIB instrument. Most instruments respond to the
command by returning an identification string.
*IDN?
To establish basic communication with your instrument, use the NI-488.2
Communicator, as follows:
1. If you have not already done so, scan for connected instruments as
described in the previous section,
2. Select Start»Programs»National Instruments NI-488.2»Explore
GPIB to start Measurement & Automation Explorer.
message appears in the right window
Scan for GPIB
2-6
Scan for
message appears in the right
help
at the Interactive
Instruments.
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