Agilent Technologies 34972A User Manual page 113

• You can configure the event or action that controls the onset of each
sweep through the scan list (a sweep is one pass through the scan
list). When the internal DMM is removed (or disabled), the default
scan interval source is "timer." For more information, refer to "Scan
Interval" on page 80.
• You can configure the event or action that notifies the 34970A/
34972A to advance to the next channel in the scan list. Note that the
Channel Advance source shares the same sources as the scan
interval. However, an error is generated if you attempt to set the
channel advance source to the same source used for the scan interval.
• You can specify the number of times the instrument will sweep
through the scan list. When the specified number of sweeps have
occurred, the scan stops. For more information, refer to "Scan Count"
on page 102.
• An externally-controlled scan can also include a read of a digital port
or a read of the totalizer count on the multifunction module. When
the channel advance reaches the first digital channel, the instrument
scans through all of the digital channels in that slot and stores the
readings in reading memory (only one channel advance signal is
required).
• You can configure the list of channels for 4-wire external scanning
without the internal DMM. When enabled, the instrument
automatically pairs channel n with channel n+10 (34901A) or n+8
(34902A) to provide the source and sense connections.
• Front-Panel Operation: To select the channel advance source, choose
from the following items.
AUTO ADVANCE , EXT ADVANCE
To initiate the scan, press
To configure the instrument for 4-wire external scanning, choose the
following item.
4W SCAN
Chapter 4 Features and Functions
Scanning with External Instruments
(the SCAN annunciator will turn on).
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