34410A/11A/L4411A User’s Guide 57
Features and Functions 2
Ranging
Applies to all measurements except continuity and diode test, which use a
fixed range. Temperature measurements always use autoranging.
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 present range
Up range at >120% of present 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 autoranging, as
appropriate for the probe type.
• For continuity tests, the multimeter range is fixed at 1 kΩ. 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 42).
Or, use the configuration menu for the selected function. For the latter
method. Press as required:
...
> RANGE > AUTO or
...
> RANGE > MANUAL (select the desired range.)
Then step through or exit the menu.
For 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.
(The sign is ±
or +, whichever is appropriate.)
UG_ED5.book Page 57 Thursday, March 1, 2012 11:28 AM
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