Command Summary
30 Keysight 3458A Quick Reference Guide
30 Keysight 3458A Quick Reference Guide
prevents high frequency components from
causing false triggers.
control = OFF (0), ON (1)
Power-on control = OFF.
Default control = ON.
LFREQ [frequency]
or
LFREQ LINE
Specifies the A/D converter's reference frequency
or measures the line frequency and sets the
reference frequency to the measured value.
frequency: Specifies the reference frequency. The
valid range is 45 - 65 Hz, or 360 - 440 Hz. When
the frequency is in the range of 360 - 440 Hz, the
multimeter divides that value by 8 (e.g. 400/8 =
50 Hz).
Power-on reference frequency = rounded value
of 50 or 60 Hz
Default reference frequency = the exact
measured line frequency (or measured value/8 for
40O Hz line frequency).
LINE: Measures the exact value of the line
frequency and sets the reference frequency to
that value (or measured value/8 if the measured
value is between 360 and 440Hz).
LINE?
Line Frequency Query. Measures and returns the
frequency of the AC power line.
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