34410A/11A User’s Guide 59
Features and Functions 2
Ranging
This feature applies to voltage, current, resistance, capacitance and
frequency/period measurements only.
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.
• Autorange thresholds – The multimeter will shift range as follows:
Down range at <10% of current range
Up range at >120% of current range
• Ranging is local to the selected function; the multimeter remembers the
selected ranging method (auto or manual) and selected manual range
when you switch between measurement functions.
• For frequency and period measurements, the selected range is for the
ac voltage level of the input signal.
• For temperature measurements, the multimeter uses auto ranging,
depending on the probe type.
• For continuity tests, the multimeter range is fixed at 1 kW, and for
diode tests the range is fixed at 1 VDC with a 1 mA current source
output.
• Front Panel Operation: For applicable measurement functions, the ranging
method and manual range may be selected by front panel shortcuts (see
“Ranging” on page 43), or through the configuration menu for the
selected function. For the latter method, press until RANGE is
displayed, then select AUTO or MANUAL using the navigation keypad and
press . If MANUAL has been selected, press or as needed to
select the desired range, and press . Then step through or exit the
configuration menu.
Manual ranging – If the input signal is greater than can be measured on
the selected range, the multimeter provides these overload indications:
\OVLD from the front panel or “\9.9E+37” from the remote interface.
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