1 U8480 Series Remote Operation
34 U8480 Series Programming Guide
Using INITiate and FETCh?
Some finetuning of measurements can be carried out using the CONFigure
command, INITiate command, and FETCh? query. For example, in the above
program segment, some finetuning can be carried out by setting the filter length
to 1024 and the trigger delay off.
1 ABOR
2 CONF -20,DEF,(@1)
3 SENS:AVER:COUN 1024
4 TRIG:DEL:AUTO OFF
5 INIT
6 FETC? -20,DEF,(@1)
Example 4 - Specifying the resolution parameter
The previous examples detail the use of the expected value and source list
parameters. The resolution parameter is used to set the measurement resolution.
This parameter does not affect the resolution of the data; however it does affect
the auto-averaging setting.
The following example uses the resolution parameter to specify a resolution
setting of 3. This setting represents three significant digits if the measurement unit
is W, and 0.01 dB if the unit is dBm (for further details on the resolution
parameter, refer to the commands in Chapter 2, MEASurement Commands). Also,
in this example, the expected power and source list parameters are set to their
default values. The expected power value is left unchanged at its current setting.
Note that as the source list parameter is the last specified parameter, you do not
have to specify DEF.
ABOR Aborts the measurement.
CONF -20,DEF,(@1) Configures the measurement to use an expected
power of –20 dBm and the current resolution
setting.
INIT Sets it to wait for a trigger state.
FETC? -20,DEF,(@1) Triggers a measurement, and then retrieves the
measurement reading.
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