8588A/8558A
Operators Manual
44
Table 11. Digitize Example 2
Action Comment
Push
Aborts any current trigger cycle. Trigger
subsystem placed in the Idle state, INIT:CONT
OFF.
If not already in voltage mode, push (V or
I) to select Voltage.
Push (Range) and select the 10V range.
Push (Measure Setup) and set a 10 µs
aperture and the low pass filter to OFF.
Aperture selection is a compromise between
noise and bandwidth, which affect the overall
accuracy. The input signal is averaged during the
sample time. If the magnitude of the signal
changes during the aperture a magnitude error
results. While noise increases as aperture
decreases, magnitude error decreases. The
Aperture time should be less than the sample
period to avoid trigger too fast errors.
Push (Coupling, Zin) and select the
required input coupling and impedance.
For voltage ranges ≤10V, use DC, Auto. For the
100V and 1000V ranges, use DC, 1M for best
performance.
Connect the signal to be sampled to the active
input terminals.
Done at this point to provide time for the signal
conditioning circuits to stabilize.
Push
Push (Reset to Defaults) to reset the
Trigger subsystem to the default settings
The default settings pertinent to this example are
ARM2:SOURce IMM
ARM2:COUNT 1
ARM2:ECOUNT 1
ARM1:SOURce IMM
ARM1:COUNT 1
ARM1:ECOUNT 1
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