Keysight 53210A - Page 114

4 53210A Input Signal Conditioning
114 Keysight 53210A User’s Guide
Using Auto-Level
Automatic setting of the input threshold level is based on the positive and
negative peaks of the input signal. Auto-level is enabled with the command:
INPut[1]:LEVel:AUTO {OFF|ON|ONCE}
INPut[1]:LEVel:AUTO? (query form)
OFF disables auto-leveling; ON enables auto-leveling. Auto-level ONCE immediately
sets an auto-level and then disables auto-leveling.
When auto-level is enabled, the threshold level is specified as a percentage (%) of
the peak-to-peak input voltage (see “Setting Relative Threshold Levels”).
The
CONFigure and MEASure commands enable auto-leveling and set a 50%
threshold level. A reset (
*RST) or front panel preset (Preset) also enables
auto-leveling at a 50% threshold level.
Setting Relative Threshold Levels
Relative threshold levels are percentages of the peak-to-peak input signal
amplitude. Relative thresholds are set with the command:
INPut[1]:LEVel:RELative {<percent>|MINimum|MAXimum| DEFault}
INPut[1]:LEVel:RELative? [{MINimum|MAXimum| DEFault}] (query form)
Threshold values are from 10% to 90% with 5% resolution. A relative value of 10%
corresponds to the signal’s negative peak; a relative value of 90% corresponds to
the signal’s positive peak. In order to specify a relative threshold level,
auto-level must be enabled.