Getting Started Tutorial 1
34405A User’s and Service Guide 27
Selecting a Range
You can let the multimeter automatically select the range
using autoranging, or you can select a fixed range using
manual ranging. Autoranging is convenient because the
multimeter automatically selects the appropriate range for
sensing and displaying each measurement. However, manual
ranging results in better performance, since the multimeter
does not have to determine which range to use for each
measurement.
• The ManRng annunciator is on when manual range is
enabled.
• Autoranging is selected at power- on and after a remote
reset.
• Manual ranging – If the input signal is greater than can
be measured on the selected range, the multimeter
provides these overload indications: OL from the front
panel or “
\
9.9E+37” from the remote interface.
• For frequency measurements, ranging applies to the
signal’s input voltage, not its frequency.
• The range is fixed for continuity (1 kΩ range) and diode
(1 VDC range).
• The multimeter remembers the selected ranging method
(auto or manual) and the selected manual range for each
measurement function.
Selects a lower range and disables autoranging.
Selects a higher range and disables autoranging.
Selects autoranging and disables manual ranging.
Shift
Auto
34405A users guide.book Page 27 Saturday, September 2, 2006 3:38 PM
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