National Instruments NI-488.2 ユーザーズマニュアル

If the 

 message appears in the right window 

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, 

.

If the 

 message appears in the right 

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 

help 

"Interactive Control:getting started"

 at the Interactive 

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 

*IDN?

 command by returning an identification string.

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.