INPut{1|2}:LEVel:AUTO
Syntax
INPut[{1|2}]:LEVel:AUTO {OFF | ON | ONCE}
INPut[{1|2}]:LEVel:AUTO?
Description
This command enables or disables automatic setting of the input threshold voltage (auto-leveling). If
ONCE is specifed, the input is immediately auto-leveled, and auto-leveling is disabled.
Remarks
l INPut or INPut1 refers to channel 1; INPut2 to channel 2.
l Setting an input threshold voltage (INPut{1|2}:LEVel{1|2} command) disables auto-leveling.
l When auto-leveling is enabled, the threshold is specified as a percentage of peak-to-peak voltage, set
by the INPut{1|2}:LEVel{1|2}:RELative command.
You should disable auto-leveling and specify the reference values in terms of absolute
voltage if the input frequency being measured is lower than the minimum input signal
frequency for auto-leveling (see SYSTem:ALEVel:FREQuency command).
l SYSTem:ALEVel:FREQuency selects the minimum input signal frequency for auto-leveling.
l The instrument enables auto-leveling after a Factory Reset (*RST command) or an Instrument Preset
(SYSTem:PRESet command).
Return Format
The query returns the current auto-leveling state: 0 (OFF) or 1 (ON).
Examples
The following example makes a frequency measurement on channel 1. The input is configured for an AC-
coupled, auto-leveled threshold at 30% with a positive slope. (Note that CONFigure enables auto-lev-
eling, but the INPut:LEVel:AUTO command is included for the example).
INP:COUP AC
CONF:FREQ 1.2E6
INP:LEV:AUTO ON
INP:LEV:REL 30
READ?
Typical Response: +1.21513398300000E+006
INPut{1|2}:LEVel:AUTO
208 Keysight 53220A/53230A Programmer's Reference
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