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Chapter 4 Features and Functions
Scanning
4
To Build a Scan List From the Remote Interface: •
• The
MEASure?
,
CONFigure
, and
ROUTe:SCAN
commands contain a
scan_list parameter which defines the list of channels in the scan list.
Note that each time you send one of these commands, it redefines the
scan list. To determine which channels are currently in the scan list,
you can send the
ROUTe:SCAN?
query command.
• To initiate a scan, execute the
MEASure?
,
READ?
, or
INITiate
command. The
MEASure?
and
READ?
commands send readings
directly to the instrument’s output buffer but readings are not stored
in memory. The
INITiate
command stores readings in memory. Use
the
FETCh?
command to retrieve stored readings from memory.
See the Agilent 34970A/34972A Programmer’s Reference Help for
more information on using these commands.
• When you reconfigure a channel and add it to the scan list using
MEASure?
or
CONFigure
, it is important to note that the previous
configuration on that channel is lost. For example, assume that a
channel is configured for DC voltage measurements. When you
reconfigure that channel for thermocouple measurements, the
previous range, resolution, and channel delay are set to their Factory
Reset (
*RST
command) state.
• Each time you initiate a new scan, the instrument clears all
previously stored readings.
• To stop a scan, execute the
ABORt
command.
34970A Refresh UG.book Page 95 Wednesday, February 17, 2010 12:34 PM