Agilent Technologies Infiniium 90000 Q-Series, Programmer'S Manual

Page: 654 / 1186

654 Agilent Infiniium 90000 Series Oscilloscopes Programmer's Reference
25
Measure Commands
: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>
The :MEASure:THResholds:TOPBase:ABSolute? query returns the current
settings for top level and base level voltages.
Returned Format
[:MEASure:THResholds:TOPBase:ABSolute] <top_volts>,<base_volts><NL>
Example This example returns the top level and base level voltages used to
calculate the measurements on channel 1.
myScope.WriteString ":SYSTem:HEADer OFF" ' Response headers off.
myScope.WriteString ":MEASure:THResholds:TOPBase:ABSolute? CHANnel1"
strTopBase = myScope.ReadString
Debug.Print strTopBase