Technical data

Measure Commands 25
Agilent Infiniium 9000 Series Oscilloscopes Programmer's Reference 701
:MEASure:THResholds:TOPBase:ABSolute
Command :MEASure:TOPBase:THResholds:ABSolute <source>,<top_volts>,<base_volts>
The :MEASure:TOPBase:THResholds:ABSolute command sets the top level
and base level voltages that are used to calculate the measurements that
use them.
<source> {ALL | CHANnel<N> | FUNCtion<F> | DIGital<M> | WMEMory<N> |
CLOCk | MTRend | MSPectrum | EQUalized}
MTRend and MSPectrum sources are only available if the oscilloscope has
the EZJIT option installed and the feature is enabled.
The CLOCk source is only available if the oscilloscope has the High Speed
Serial option installed and the feature is enabled.
The EQUalized source is only available if the oscilloscope has the High
Speed Serial option and the Serial Data Equalization option installed and
the features are enabled. This command uses the Feed- Forward Equalized
(FFE) signal as the source. Setting the source to ALL does not affect the
individual channel settings which is the behavior as the user interface.
<N> An integer, 1-4.
<F> An integer, 1-16.
<M> An integer, 0- 15. Digital channels are available on mixed-signal
oscilloscopes.
<top_volts>
<base_volts>
A real number specifying voltage levels. The top voltage level must be
greater than the base voltage level.
Example This example sets the voltage level for the top to 0.9 volts and the voltage
level for the base to 0.1 volts on channel 2.
myScope.WriteString ":SYSTem:HEADer OFF" ' Response headers off.
myScope.WriteString ":MEASure:THResholds:TOPBase:ABSolute CHANnel2,0.9,0
.1"
Query :MEASure:THResholds:TOPBase:ABSolute? <source>
NOTE
This command changes the threshold settings used for rise/fall time measurements,
protocol decode, and all other general-purpose measurements that use thresholds. To
change the settings used for these types of measurements individually, see:
•
":MEASure:THResholds:GENeral:TOPBase:ABSolute" on page 667
• ":MEASure:THResholds:RFALl:TOPBase:ABSolute" on page 685
• ":MEASure:THResholds:SERial:TOPBase:ABSolute" on page 697