User`s guide

134 53220A/53230A User’s Guide
4 53220A/53230A Input Signal Conditioning
If a 30% relative threshold is specified for the DC-coupled signal described
above, the corresponding (absolute) value is 1.4V. The same relative threshold
for an AC-coupled signal has an absolute value of -0.6V.
The absolute value of any relative threshold level can be queried using:
INPut[{1|2}]:LEVel[{1|2}][:ABSolute]?
or computed as:
Vmin + (% threshold x Vpp)
level w/DC coupling: 0.5 + (0.30 x 3) = 1.4V
level w/AC coupling: -1.5 + (0.30 x 3) = -0.6V
System Auto-Level Range
Auto-leveling is available for two input frequency ranges: 50 Hz to < 10 kHz
and frequencies >
10 kHz. The auto-level period is shorter for frequencies
>
10 kHz when an (auto-level) frequency range is set from the front panel or
specified by the command:
SYSTem:ALEVel:FREQuency {<frequency>|MINimum|MAXimum|
DEFault}
SYSTem:ALEVel:FREQuency? [{MINimum|MAXimum|DEFault}]
(query form)