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LEVel
CONFigure
reset (
enables auto-leveling.
Relative Threshold Example
//set a relative trigger threshold
CONF:FREQ 1E6, 0.1, (@1)
Measuring Low Frequency Signals
For all counter functions, auto-level should not be used for frequencies
< 50 Hz. Threshold levels should be set using absolute values (see
Absolute Threshold
The
command configures the counter (including enabling auto-level) and makes an
immediate measurement.
For frequencies in this range, use the
by specifying an absolute threshold level. For example:
//measure a 10 Hz signal
CONF:FREQ 10, (@1)
INIT
Input Coupling and Threshold Levels
Figure 4-5
Keysight 53210A User's Guide
sets the relative threshold for all measurements.
and
MEASure
) or front panel preset (Preset) also sets the threshold to 50% and
*RST
INP:IMP 50
INP:RANG 5
INP:COUP AC
INP:LEV:REL 30
Level").
command should not be used with frequencies less than 50 Hz as the
MEASure
INP:IMP 50
INP:RANG 5
INP:COUP AC
INP:LEV 1
shows a scale of how relative thresholds apply to the input signal.
53210A Input Signal Conditioning
set the threshold to 50% and enable auto-leveling. A
// measure 1 MHz signal
// set impedance 50 ohms
// set range to 5V
// set AC coupling
// threshold level at 30%
CONFigure
// measure 10 Hz signal
// set impedance to 50 ohms
// set range to 5V
// set AC coupling
// 1V threshold, turns off auto-level
// take reading
"Specifying an
command and turn off auto-level
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