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Multimeter Command Reference 105Chapter 3
:FRESistance?
MEASure:FRESistance? [<range>|MIN|MAX|DEF|AUTO
[,<
resolution>|MIN|MAX|DEF]] selects the 4-wire ohms function and allows you to
specify the measurement range and resolution.
Parameters
Comments • To select a standard measurement range, specify range as the input signal’s
maximum expected resistance. The multimeter then selects the correct range
that will accept the input.
• The AUTO or DEFault option for the range parameter enables autorange.
The
DEF option for the resolution parameter defaults the integration time to
10 PLC.
• The MIN and MAX parameters select the minimum or maximum values for
range and resolution:
For range:
MIN = 100
Ω
; MAX =100M
Ω
For resolution:
MIN selects the best resolution (the smallest value) for the
selected range.
MAX selects the worst resolution (the largest value) for the
selected range.
• To select autorange, specify AUTO or DEF for range or do not specify a value
for the range and resolution parameters. In the autorange mode, the multimeter
samples the input signal before each measurement and selects the appropriate
range.
• To specify a MIN or MAX resolution while autoranging, you must specify
MEAS:FRES? DEF (you cannot omit the range parameter). This prevents the
MIN or MAX resolution from being interpreted as a range setting and the
resulting command becomes
MEAS:FRES? DEF,MIN or
MEAS:FRES? DEF,MAX.
• Related Commands: FETCh?, INITiate, READ?
Example Making 4-Wire Ohms Measurements
MEAS:FRES? 1500,MAX
Function: 4-wire ohms; range selected: 10kW;
MAX resolution: 1Ω.
Parameter Name Parameter Type Range of Values Default Units
<
range>
numeric 100Ω|1kΩ|10kΩ|100kΩ|1MΩ
|10MΩ|100MΩ|
MIN|MAX|DEF|AUTO
ohms
<
resolution>
numeric
resolution|MIN|MAX|DEF
ohms